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Venkatachalam S, Jabir T, Vipindas PV, Krishnan KP. Ecological significance of Candidatus ARS69 and Gemmatimonadota in the Arctic glacier foreland ecosystems. Appl Microbiol Biotechnol 2024; 108:128. [PMID: 38229335 DOI: 10.1007/s00253-023-12991-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 11/08/2023] [Accepted: 12/28/2023] [Indexed: 01/18/2024]
Abstract
The Gemmatimonadota phylum has been widely detected in diverse natural environments, yet their specific ecological roles in many habitats remain poorly investigated. Similarly, the Candidatus ARS69 phylum has been identified only in a few habitats, and literature on their metabolic functions is relatively scarce. In the present study, we investigated the ecological significance of phyla Ca. ARS69 and Gemmatimonadota in the Arctic glacier foreland (GF) ecosystems through genome-resolved metagenomics. We have reconstructed the first high-quality metagenome-assembled genome (MAG) belonging to Ca. ARS69 and 12 other MAGs belonging to phylum Gemmatimonadota from the three different Arctic GF samples. We further elucidated these two groups phylogenetic lineage and their metabolic function through phylogenomic and pangenomic analysis. The analysis showed that all the reconstructed MAGs potentially belonged to novel species. The MAGs belonged to Ca. ARS69 consist about 8296 gene clusters, of which only about 8% of single-copy core genes (n = 980) were shared among them. The study also revealed the potential ecological role of Ca. ARS69 is associated with carbon fixation, denitrification, sulfite oxidation, and reduction biochemical processes in the GF ecosystems. Similarly, the study demonstrates the widespread distribution of different classes of Gemmatimonadota across wide ranges of ecosystems and their metabolic functions, including in the polar region. KEY POINTS: • Glacier foreland ecosystems act as a natural laboratory to study microbial community structure. • We have reconstructed 13 metagenome-assembled genomes from the soil samples. • All the reconstructed MAGs belonged to novel species with different metabolic processes. • Ca. ARS69 and Gemmatimonadota MAGs were found to participate in carbon fixation and denitrification processes.
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Affiliation(s)
- Siddarthan Venkatachalam
- Arctic Ecology and Biogeochemistry Division, National Centre for Polar and Ocean Research, Ministry of Earth Sciences (Govt. of India), Vasco-da-Gama, Goa, India.
| | - Thajudeen Jabir
- Arctic Ecology and Biogeochemistry Division, National Centre for Polar and Ocean Research, Ministry of Earth Sciences (Govt. of India), Vasco-da-Gama, Goa, India
| | - Puthiya Veettil Vipindas
- Arctic Ecology and Biogeochemistry Division, National Centre for Polar and Ocean Research, Ministry of Earth Sciences (Govt. of India), Vasco-da-Gama, Goa, India
| | - Kottekkatu Padinchati Krishnan
- Arctic Ecology and Biogeochemistry Division, National Centre for Polar and Ocean Research, Ministry of Earth Sciences (Govt. of India), Vasco-da-Gama, Goa, India
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2
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Dong W, Wang G, Sun J, Guo L, Chang R, Wang W, Wang Y, Sun X. Plant water source effects on plant-soil feedback for primary succession of terrestrial ecosystems in a glacier region in China. Sci Total Environ 2024; 927:172269. [PMID: 38583607 DOI: 10.1016/j.scitotenv.2024.172269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/31/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
Despite the extensive research conducted on plant-soil-water interactions, the understanding of the role of plant water sources in different plant successional stages remains limited. In this study, we employed a combination of water isotopes (δ2H and δ18O) and leaf δ13C to investigate water use patterns and leaf water use efficiency (WUE) during the growing season (May to September 2021) in Hailuogou glacier forefronts in China. Our findings revealed that surface soil water and soil nutrient gradually increased during primary succession. Dominant plant species exhibited a preference for upper soil water uptake during the peak leaf out period (June to August), while they relied more on lower soil water sources during the post-leaf out period (May) or senescence (September to October). Furthermore, plants in late successional stages showed higher rates of water uptake from uppermost soil layers. Notably, there was a significant positive correlation between the percentage of water uptake by plants and available soil water content in middle and late stages. Additionally, our results indicated a gradual decrease in WUE with progression through succession, with shallow soil moisture utilization negatively impacting overall WUE across all succession stages. Path analysis further highlighted that surface soil moisture (0- 20 cm) and middle layer nutrient availability (20- 50 cm) played crucial roles in determining WUE. Overall, this research emphasizes the critical influence of water source selection on plant succession dynamics while elucidating underlying mechanisms linking succession with plant water consumption.
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Affiliation(s)
- Wenchang Dong
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
| | - Genxu Wang
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
| | - Juying Sun
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
| | - Li Guo
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
| | - Ruiying Chang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
| | - Wenzhi Wang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
| | - Yukun Wang
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
| | - Xiangyang Sun
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China.
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Rota F, Carnicero P, Casazza G, Nascimbene J, Schönswetter P, Wellstein C. Survival in nunatak and peripheral glacial refugia of three alpine plant species is partly predicted by altitudinal segregation. Mol Ecol 2024; 33:e17343. [PMID: 38596873 DOI: 10.1111/mec.17343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 03/12/2024] [Indexed: 04/11/2024]
Abstract
Mountain biota survived the Quaternary cold stages most probably in peripheral refugia and/or ice-free peaks within ice-sheets (nunataks). While survival in peripheral refugia has been broadly demonstrated, evidence for nunatak refugia is still scarce. We generated RADseq data from three mountain plant species occurring at different elevations in the southeastern European Alps to investigate the role of different glacial refugia during the Last Glacial Maximum (LGM). We tested the following hypotheses. (i) The deep Piave Valley forms the deepest genetic split in the species distributed across it, delimiting two peripheral refugia. (ii) The montane to alpine species Campanula morettiana and Primula tyrolensis survived the LGM in peripheral refugia, while high-alpine to subnival Saxifraga facchinii likely survived in several nunatak refugia. (iii) The lower elevation species suffered a strong population decline during the LGM. By contrast, the higher elevation species shows long-term stability of population sizes due to survival on permanently ice-free peaks and small population sizes at present. We found peripheral refugia on both sides of the Piave Valley, which acted as a major genetic barrier. Demographic modelling confirmed nunatak survival not only for S. facchinii but also for montane to alpine C. morettiana. Altitudinal segregation influenced the species' demographic fluctuations, with the lower elevation species showing a significant population increase at the end of the LGM, and the higher elevation species either showing decrease towards the present or stable population sizes with a short bottleneck. Our results highlight the role of nunatak survival and species ecology in the demographic history of mountain species.
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Affiliation(s)
- Francesco Rota
- Faculty of Agricultural, Environmental and Food Sciences, Free University of Bozen-Bolzano, Bolzano, Italy
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland
| | - Pau Carnicero
- Department of Botany, University of Innsbruck, Innsbruck, Austria
| | - Gabriele Casazza
- Department of Earth, Environmental and Life Sciences (DISTAV), University of Genoa, Genova, Italy
| | - Juri Nascimbene
- BIOME Group, Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum - University of Bologna, Bologna, Italy
| | | | - Camilla Wellstein
- Faculty of Agricultural, Environmental and Food Sciences, Free University of Bozen-Bolzano, Bolzano, Italy
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Chen T, Wang J, Che T, Hao X, Li H. High spatial resolution elevation change dataset derived from ICESat-2 crossover points on the Tibetan Plateau. Sci Data 2024; 11:394. [PMID: 38632296 PMCID: PMC11024087 DOI: 10.1038/s41597-024-03214-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 04/02/2024] [Indexed: 04/19/2024] Open
Abstract
Understanding elevation changes on the Tibetan Plateau is crucial to comprehend the changes in topography, landscape, climate, environmental conditions, and water resources. However, some of the current products that track elevation changes only cover specific surface types or limited areas, and others have low spatial resolution. We propose an algorithm to extract ICESat-2 crossover points dataset for the Tibetan Plateau, and form a dataset. The crossover points dataset has a density of 2.015 groups/km², and each group of crossover points indicates the amount of change in elevation before and after a period of time over an area of approximately 17 meters in diameter. Comparing ICESat-2 crossover points data with existing studies on glaciers and lakes, we demonstrated the reliability of the derived elevation changes. The ICESat-2 crossover points provide a refined data source for understanding high-spatial-resolution elevation changes on the Tibetan Plateau. This dataset can provide validation data for various studies that require high-precision or high-resolution elevation change data on the Tibetan Plateau.
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Affiliation(s)
- Tengfei Chen
- Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou, 730000, China
- National-Local Joint Engineering Research Center of Technologies and Applications for National Geo-graphic State Monitoring, Lanzhou, 730000, China
- Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou, 730000, China
| | - Jian Wang
- Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Heihe Remote Sensing Experimental Research Station, Key Laboratory of Remote Sensing of Gansu Province, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Tao Che
- Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Heihe Remote Sensing Experimental Research Station, Key Laboratory of Remote Sensing of Gansu Province, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Xiaohua Hao
- Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Heihe Remote Sensing Experimental Research Station, Key Laboratory of Remote Sensing of Gansu Province, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Hongyi Li
- Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
- Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou, 730000, China.
- Heihe Remote Sensing Experimental Research Station, Key Laboratory of Remote Sensing of Gansu Province, Chinese Academy of Sciences, Lanzhou, 730000, China.
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Liu G, Li J, Ying T. Amundsen Sea Ice Loss Contributes to Australian Wildfires. Environ Sci Technol 2024; 58:6716-6724. [PMID: 38573586 DOI: 10.1021/acs.est.4c00051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Wildfires in Australia have attracted extensive attention in recent years, especially for the devastating 2019-2020 fire season. Remote forcing, such as those from tropical oceans, plays an important role in driving the abnormal weather conditions associated with wildfires. However, whether high latitude climate change can impact Australian fires is largely unclear. In this study, we reveal a robust relationship between Antarctic sea ice concentration (SIC), primarily over the Amundsen Sea region, with Australian springtime fire activity, by using reanalysis data sets, AMIP simulation results, and a state-of-the-art climate model simulation. Specifically, a diminished Amundsen SIC leads to the formation of a high-pressure system above Australia as a result of the eastward propagation of Rossby waves. Meanwhile, two strengthened meridional cells originating from the tropic and polar regions also enhance subsiding airflow in Australia, resulting in prolonged arid and high-temperature conditions. This mechanism explains about 28% of the variability of Australian fire weather and contributed more than 40% to the 2019 extreme burning event, especially in the eastern hotspots. These findings contribute to our understanding of polar-low latitude climate teleconnection and have important implications for projecting Australian fires as well as the global environment.
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Affiliation(s)
- Guanyu Liu
- Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China
| | - Jing Li
- Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China
| | - Tong Ying
- Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China
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Weiß JF, von Appen WJ, Niehoff B, Hildebrand N, Graeve M, Neuhaus S, Bracher A, Nöthig EM, Metfies K. Unprecedented insights into extents of biological responses to physical forcing in an Arctic sub-mesoscale filament by combining high-resolution measurement approaches. Sci Rep 2024; 14:8192. [PMID: 38589522 PMCID: PMC11001927 DOI: 10.1038/s41598-024-58511-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 03/30/2024] [Indexed: 04/10/2024] Open
Abstract
In Fram Strait, we combined underway-sampling using the remote-controlled Automated Filtration System for Marine Microbes (AUTOFIM) with CTD-sampling for eDNA analyses, and with high-resolution optical measurements in an unprecedented approach to determine variability in plankton composition in response to physical forcing in a sub-mesoscale filament. We determined plankton composition and biomass near the surface with a horizontal resolution of ~ 2 km, and addressed vertical variability at five selected sites. Inside and near the filament, plankton composition was tightly linked to the hydrological dynamics related to the presence of sea ice. The comprehensive data set indicates that sea-ice melt related stratification near the surface inside the sub-mesoscale filament resulted in increased sequence abundances of sea ice-associated diatoms and zooplankton near the surface. In analogy to the physical data set, the underway eDNA data, complemented with highly sampled phytoplankton pigment data suggest a corridor of 7 km along the filament with enhanced photosynthetic biomass and sequence abundances of sea-ice associated plankton. Thus, based on our data we extrapolated an area of 350 km2 in Fram Strait with enhanced plankton abundances, possibly leading to enhanced POC export in an area that is around a magnitude larger than the visible streak of sea-ice.
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Affiliation(s)
- Josefine Friederike Weiß
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Handelshafen 12, 27570, Bremerhaven, Germany
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Polar Terrestrial Environmental Systems, 14473, Potsdam, Germany
| | - Wilken-Jon von Appen
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - Barbara Niehoff
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - Nicole Hildebrand
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - Martin Graeve
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - Stefan Neuhaus
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - Astrid Bracher
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Handelshafen 12, 27570, Bremerhaven, Germany
- Institute of Environmental Physics (IUP), University Bremen (UB), Otto-Hahn-Allee 1, 28359, Bremen, Germany
| | - Eva-Maria Nöthig
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Handelshafen 12, 27570, Bremerhaven, Germany
| | - Katja Metfies
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Am Handelshafen 12, 27570, Bremerhaven, Germany.
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), Ammerländer Heerstrasse 231, 26129, Oldenburg, Germany.
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Agnew DC. A global timekeeping problem postponed by global warming. Nature 2024; 628:333-336. [PMID: 38538793 DOI: 10.1038/s41586-024-07170-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 02/06/2024] [Indexed: 04/01/2024]
Abstract
The historical association of time with the rotation of Earth has meant that Coordinated Universal Time (UTC) closely follows this rotation1. Because the rotation rate is not constant, UTC contains discontinuities (leap seconds), which complicates its use in computer networks2. Since 1972, all UTC discontinuities have required that a leap second be added3. Here we show that increased melting of ice in Greenland and Antarctica, measured by satellite gravity4,5, has decreased the angular velocity of Earth more rapidly than before. Removing this effect from the observed angular velocity shows that since 1972, the angular velocity of the liquid core of Earth has been decreasing at a constant rate that has steadily increased the angular velocity of the rest of the Earth. Extrapolating the trends for the core and other relevant phenomena to predict future Earth orientation shows that UTC as now defined will require a negative discontinuity by 2029. This will pose an unprecedented problem for computer network timing and may require changes in UTC to be made earlier than is planned. If polar ice melting had not recently accelerated, this problem would occur 3 years earlier: global warming is already affecting global timekeeping.
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Affiliation(s)
- Duncan Carr Agnew
- Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA.
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Liu X, Gao W, Wei T, Dong Z, Ren J, Shao Y, Chen X. Distribution and source of heavy metals in Tibetan Plateau topsoil: New insight into the influence of long-range transported sources to the surrounding glaciers. Environ Pollut 2024; 346:123498. [PMID: 38342433 DOI: 10.1016/j.envpol.2024.123498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/17/2024] [Accepted: 02/03/2024] [Indexed: 02/13/2024]
Abstract
Heavy metals present a substantial threat to both the environment and human health. Considering the delicate ecological equilibrium of the Tibetan Plateau (TP) and its heightened susceptibility to anthropogenic impacts, scholarly attention has progressively turned toward the examination of heavy metal pollution within the plateau's environment. In this study, we conducted a comprehensive analysis of various heavy metals (As, Cr, Co, Ni, Cu, Mo, Cd, Pb, and Sb), utilizing topsoil samples collected from the TP during the period of 2018-2021. Additionally, snow and cryoconite samples obtained from TP glaciers during the same timeframe were also subjected to analysis. The results indicate elevated concentrations of total heavy metals in the eastern and western TP (328.7 μg/g), as opposed to the central and southern TP (145.7 μg/g). Most heavy metals exhibit a consistent spatial distribution pattern. High Enrichment Factors (EFs) and Geoaccumulation Index (Igeo) values for As and Cd suggest their enrichment in TP topsoil. Receptor modeling identified three primary sources of heavy metals within the topsoil: industrial sources (42.3%), inherent natural sources within the surface soil (20.6%), and vehicular emissions (14.2%). Substantial differences in heavy metal concentrations and spatial distribution were observed between the topsoil and the glacial snow-cryoconite matrix. The prominent presence of Sb in the snow-cryoconite matrix, in contrast to its low abundance in the topsoil, indicates distinct source influences of long-range transported materials between the two environments. Our inference suggests that the influence of heavy metals from distant pollutants undergo mixing and dilution in the topsoil due to the presence of local indigenous heavy metals, although such influence is notably observed on the glacier surface of the TP. Consequently, this underscores the significant impact of long-range transported sources on heavy metals, surpassing the influence of local TP soils, to the alpine glaciers and even other atmospheric sediments in Tibetan Plateau.
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Affiliation(s)
- Xiaoli Liu
- College of Geography and Environmental Science, National Demonstration Center for Experimental Environment and Planning Education, Henan University, Kaifeng 475004, Henan, China; State Key Laboratory of Cryosphere Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Wenhua Gao
- College of Geography and Environmental Science, National Demonstration Center for Experimental Environment and Planning Education, Henan University, Kaifeng 475004, Henan, China.
| | - Ting Wei
- State Key Laboratory of Cryosphere Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Zhiwen Dong
- State Key Laboratory of Cryosphere Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Jiawen Ren
- State Key Laboratory of Cryosphere Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Yaping Shao
- Institute of Geophysics and Meteorology, University of Cologne, Germany
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Willcox MJ, Rhodehouse BB, DeGroot DW. Ice Sheet Cooling in the Field Reduces Morbidity in Exertional Heat Stroke. Curr Sports Med Rep 2024; 23:119-123. [PMID: 38578488 DOI: 10.1249/jsr.0000000000001156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Affiliation(s)
- M Justin Willcox
- Department of Family Medicine, Martin Army Community Hospital, Fort Moore, GA
| | - Blair B Rhodehouse
- Department of Family Medicine, Martin Army Community Hospital, Fort Moore, GA
| | - David W DeGroot
- The Army Heat Center, Martin Army Community Hospital, Fort Moore, GA
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10
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Tavella P, Mitrovica JX. Melting ice solves leap-second problem - for now. Nature 2024; 628:273-274. [PMID: 38580860 DOI: 10.1038/d41586-024-00850-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
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Seok MW, Ko YH, Park KT, Kim TW. Possible enhancement in ocean productivity associated with wildfire-derived nutrient and black carbon deposition in the Arctic Ocean in 2019-2021. Mar Pollut Bull 2024; 201:116149. [PMID: 38364527 DOI: 10.1016/j.marpolbul.2024.116149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 02/18/2024]
Abstract
The Arctic is severely affected by climate change and various forms of environmental pollution. Enriched with nutrients and light-absorbing compounds, the wildfire plume has the potential to affect biological carbon fixation and sequestration within the Arctic Ocean. In this study, we utilized satellite-derived oceanic data (phytoplankton and sea ice) and atmospheric reanalysis products (black carbon, BC, indicative of wildfire impact) to evaluate the effect of the pronounced increase in wildfires from 2019 to 2021 on the East Siberian Sea. During these years, chlorophyll-a levels rose by ∼213 % compared to the previous decadal average, which had notably lower wildfire activities. This increase in chlorophyll-a is attributable to the deposition of nitrogen from the wildfire plume. Concurrently, the period required for sea ice concentration to decrease by 25 % was on average ∼ 10 days shorter than usual. This suggests that BC-induced acceleration of sea ice melting might extend the growing season for phytoplankton.
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Affiliation(s)
- Min-Woo Seok
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Young Ho Ko
- OJeong Resilience Institute, Korea University, Seoul 02841, Republic of Korea
| | - Ki-Tae Park
- Division of Polar Climate Sciences, Korea Polar Research Institute, Incheon, Republic of Korea; now at Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Tae-Wook Kim
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; OJeong Resilience Institute, Korea University, Seoul 02841, Republic of Korea.
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Høilund-Carlsen PF, Alavi A, Castellani RJ, Neve RL, Perry G, Revheim ME, Barrio JR. Alzheimer's Amyloid Hypothesis and Antibody Therapy: Melting Glaciers? Int J Mol Sci 2024; 25:3892. [PMID: 38612701 PMCID: PMC11012162 DOI: 10.3390/ijms25073892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
The amyloid cascade hypothesis for Alzheimer's disease is still alive, although heavily challenged. Effective anti-amyloid immunotherapy would confirm the hypothesis' claim that the protein amyloid-beta is the cause of the disease. Two antibodies, aducanumab and lecanemab, have been approved by the U.S. Food and Drug Administration, while a third, donanemab, is under review. The main argument for the FDA approvals is a presumed therapy-induced removal of cerebral amyloid deposits. Lecanemab and donanemab are also thought to cause some statistical delay in the determination of cognitive decline. However, clinical efficacy that is less than with conventional treatment, selection of amyloid-positive trial patients with non-specific amyloid-PET imaging, and uncertain therapy-induced removal of cerebral amyloids in clinical trials cast doubt on this anti-Alzheimer's antibody therapy and hence on the amyloid hypothesis, calling for a more thorough investigation of the negative impact of this type of therapy on the brain.
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Affiliation(s)
- Poul F. Høilund-Carlsen
- Department of Nuclear Medicine, Odense University Hospital, 5000 Odense C, Denmark
- Research Unit of Clinical Physiology and Nuclear Medicine, Department of Clinical Research, University of Southern Denmark, 5230 Odense M, Denmark
| | - Abass Alavi
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA;
| | - Rudolph J. Castellani
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA;
| | - Rachael L. Neve
- Gene Delivery Technology Core, Massachusetts General Hospital, Boston, MA 02114, USA;
| | - George Perry
- Department of Neuroscience, Developmental and Regenerative Biology and Genetics of Neurodegeneration, University of Texas at San Antonio, San Antonio, TX 78249, USA;
| | - Mona-Elisabeth Revheim
- The Intervention Centre, Division of Technology and Innovation, Oslo University Hospital, 0372 Oslo, Norway;
- Institute of Clinical Medicine, University of Oslo, 0313 Oslo, Norway
| | - Jorge R. Barrio
- Department of Molecular and Medical Pharmacology, David Geffen UCLA School of Medicine, Los Angeles, LA 90095, USA
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Rontani JF, Smik L, Divine D, Husum K, Belt ST. Gas chromatography-mass spectrometry selected ion monitoring and gas chromatography-tandem mass spectrometry selected reaction monitoring analyses of mono-, di- and tri-unsaturated C 25 highly branched isoprenoid alkene biomarkers in sea ice and sediment samples: A comparative study. Rapid Commun Mass Spectrom 2024; 38:e9704. [PMID: 38356092 DOI: 10.1002/rcm.9704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 12/21/2023] [Accepted: 12/21/2023] [Indexed: 02/16/2024]
Abstract
RATIONALE The efficiency of selected ion monitoring (SIM) and selected reaction monitoring (SRM) analyses for the quantification of three mono-, di- and tri-unsaturated highly branched isoprenoid (HBI) alkenes (IP25 , IPSO25 and HBI III, respectively), often used as proxies for the occurrence of Arctic and Antarctic sea ice or the adjacent open waters, was compared. METHODS Gas chromatography (GC)-mass spectrometry (MS)/SIM and GC/MS/MS/SRM analyses were carried out on dilute solutions made from purified standards of these three HBIs, and then on hydrocarbon fractions of several sediment and sea ice sample extracts. More efficient and specific SRM transitions were selected after collision-induced dissociation of each precursor ion at different collision energies. RESULTS SRM analysis avoided any overestimation of IP25 resulting from the contribution of the coeluting 13 C mass isotopomer of IPSO25 (M+ ˙ + 2) to the SIM target ion. In contrast, SRM analysis is less reliable for IPSO25 quantification in cases where several regio-isomers are present, likely due to intense double bond migrations following electron impact. In the case of HBI III, SRM analysis constitutes a potentially suitable alternative to SIM analysis, especially in terms of improving limit of detection. CONCLUSIONS Despite the intense migrations of HBI double bonds under electron ionization, the selected SRM transitions should be more suitable than SIM target ions for IP25 and HBI III quantification in complex hydrocarbon fractions of natural samples. However, the advantage is less evident for IPSO25 due to the presence of numerous regio-isomers.
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Affiliation(s)
- Jean-François Rontani
- Aix-Marseille University, Université de Toulon, CNRS/INSU/IRD, Mediterranean Institute of Oceanography (MIO), UM 110, Marseille, France
| | - Lukas Smik
- Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, UK
- Centre for Resilience in Environment, Water and Waste, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Dmitry Divine
- Norwegian Polar Institute, Fram Centre, Tromsø, Norway
| | - Katrine Husum
- Norwegian Polar Institute, Fram Centre, Tromsø, Norway
| | - Simon T Belt
- Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, UK
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Attard K, Singh RK, Gattuso JP, Filbee-Dexter K, Krause-Jensen D, Kühl M, Sejr MK, Archambault P, Babin M, Bélanger S, Berg P, Glud RN, Hancke K, Jänicke S, Qin J, Rysgaard S, Sørensen EB, Tachon F, Wenzhöfer F, Ardyna M. Seafloor primary production in a changing Arctic Ocean. Proc Natl Acad Sci U S A 2024; 121:e2303366121. [PMID: 38437536 PMCID: PMC10945780 DOI: 10.1073/pnas.2303366121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024] Open
Abstract
Phytoplankton and sea ice algae are traditionally considered to be the main primary producers in the Arctic Ocean. In this Perspective, we explore the importance of benthic primary producers (BPPs) encompassing microalgae, macroalgae, and seagrasses, which represent a poorly quantified source of Arctic marine primary production. Despite scarce observations, models predict that BPPs are widespread, colonizing ~3 million km2 of the extensive Arctic coastal and shelf seas. Using a synthesis of published data and a novel model, we estimate that BPPs currently contribute ~77 Tg C y-1 of primary production to the Arctic, equivalent to ~20 to 35% of annual phytoplankton production. Macroalgae contribute ~43 Tg C y-1, seagrasses contribute ~23 Tg C y-1, and microalgae-dominated shelf habitats contribute ~11 to 16 Tg C y-1. Since 2003, the Arctic seafloor area exposed to sunlight has increased by ~47,000 km2 y-1, expanding the realm of BPPs in a warming Arctic. Increased macrophyte abundance and productivity is expected along Arctic coastlines with continued ocean warming and sea ice loss. However, microalgal benthic primary production has increased in only a few shelf regions despite substantial sea ice loss over the past 20 y, as higher solar irradiance in the ice-free ocean is counterbalanced by reduced water transparency. This suggests complex impacts of climate change on Arctic light availability and marine primary production. Despite significant knowledge gaps on Arctic BPPs, their widespread presence and obvious contribution to coastal and shelf ecosystem production call for further investigation and for their inclusion in Arctic ecosystem models and carbon budgets.
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Affiliation(s)
- Karl Attard
- Department of Biology, University of Southern Denmark, 5230Odense M, Denmark
- Danish Institute for Advanced Study, University of Southern Denmark, 5230Odense M, Denmark
- Takuvik International Research Laboratory, CNRS/Université Laval, Québec City, QCG1V 0A6, Canada
| | - Rakesh Kumar Singh
- Department of Biology, Chemistry and Geography, Université du Québec à Rimouski, Rimouski, QCG5L 3A1, Canada
- Center for Remote Imaging, Sensing and Processing, National University of Singapore, Singapore119076, Singapore
| | - Jean-Pierre Gattuso
- CNRS-Sorbonne Université, Laboratoire d’Océanographie, Villefranche-sur-Mer06230, France
- Institute for Sustainable Development and International Relations, Paris75337, France
| | - Karen Filbee-Dexter
- Takuvik International Research Laboratory, CNRS/Université Laval, Québec City, QCG1V 0A6, Canada
- Benthic Communities Group/Institute of Marine Research, His4817, Norway
- School of Biological Science and Indian Oceans Marine Research Centre, University of Western Australia, Perth6009, WA, Australia
| | - Dorte Krause-Jensen
- Department of Ecoscience, Aarhus University, 8000Aarhus C, Denmark
- Arctic Research Center, Department of Biology, Aarhus University, 8000Aarhus C, Denmark
| | - Michael Kühl
- Department of Biology, Marine Biological Section, University of Copenhagen, 3000Helsingør, Denmark
| | - Mikael K. Sejr
- Department of Ecoscience, Aarhus University, 8000Aarhus C, Denmark
- Arctic Research Center, Department of Biology, Aarhus University, 8000Aarhus C, Denmark
| | - Philippe Archambault
- Takuvik International Research Laboratory, CNRS/Université Laval, Québec City, QCG1V 0A6, Canada
- ArcticNet, Department of Biology, Université Laval, Québec City, QCG1V 0A6, Canada
| | - Marcel Babin
- Takuvik International Research Laboratory, CNRS/Université Laval, Québec City, QCG1V 0A6, Canada
| | - Simon Bélanger
- Department of Biology, Chemistry and Geography, Université du Québec à Rimouski, Rimouski, QCG5L 3A1, Canada
| | - Peter Berg
- Department of Environmental Sciences, University of Virginia, Charlottesville, VA400123
| | - Ronnie N. Glud
- Department of Biology, University of Southern Denmark, 5230Odense M, Denmark
- Danish Institute for Advanced Study, University of Southern Denmark, 5230Odense M, Denmark
- Department of Ocean and Environmental Sciences, Tokyo University of Marine Science and Technology, 108-8477Tokyo, Japan
| | - Kasper Hancke
- Norwegian Institute for Water Research, 0579Oslo, Norway
| | - Stefan Jänicke
- Department of Mathematics and Computer Science, University of Southern Denmark, Odense, Denmark
| | - Jing Qin
- Department of Mathematics and Computer Science, University of Southern Denmark, Odense, Denmark
| | - Søren Rysgaard
- Arctic Research Center, Department of Biology, Aarhus University, 8000Aarhus C, Denmark
- Centre for Earth Observation Science, Clayton H. Riddell Faculty of Environment Earth, and Resources, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Esben B. Sørensen
- Department of Mathematics and Computer Science, University of Southern Denmark, Odense, Denmark
| | - Foucaut Tachon
- Takuvik International Research Laboratory, CNRS/Université Laval, Québec City, QCG1V 0A6, Canada
| | - Frank Wenzhöfer
- Department of Biology, University of Southern Denmark, 5230Odense M, Denmark
- Helmholtz - Max Planck Joint Research Group for Deep Sea Ecology and Technology, Alfred-Wegener-Institute Helmholtz-Centre for Polar and Marine Research, Bremerhaven27515, Germany
- Helmholtz - Max Planck Joint Research Group for Deep Sea Ecology and Technology, Max-Planck-Institute for Marine Microbiology, Bremen28359, Germany
| | - Mathieu Ardyna
- Takuvik International Research Laboratory, CNRS/Université Laval, Québec City, QCG1V 0A6, Canada
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Falk MT, Hagsten E, Lin X. Importance of temporary and permanent snow for new second homes. Int J Biometeorol 2024; 68:581-593. [PMID: 36607447 PMCID: PMC9816543 DOI: 10.1007/s00484-022-02420-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 12/15/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
This study investigates empirically how natural snow depth and permanent snow affect the number of new second homes in Norway. One out of four Norwegian municipalities is partly covered by glaciers and permanent snow. In the winter seasons of 1983-2020, there is a decline in snow depth from 50 to 35 cm on average (based on 41 popular second-home areas in the mountains). Results of the fixed effects Poisson estimator with spatial elements show that there is a significant and positive relationship between natural snow depth in the municipality and the number of second homes started. There is also a significant and negative relationship between the number of new second homes in the municipality and a scarcity of snow in the surrounding municipalities. However, the magnitude of both effects is small. Estimates also show a strong positive relationship between the proportion of surface covered by permanent snow or glaciers in the municipality and new second homes. This implies that a decline in permanent snow and glaciers may make these areas less attractive for the location of second homes.
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Affiliation(s)
| | - Eva Hagsten
- University of South-Eastern Norway, Bø, Norway
| | - Xiang Lin
- Södertörn University, Huddinge, Sweden.
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Mayer M, Abegg B. Development of summer skiing days in Austrian glacier ski areas in the first two decades of the twenty-first century. Int J Biometeorol 2024; 68:547-564. [PMID: 36181581 PMCID: PMC9525926 DOI: 10.1007/s00484-022-02371-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 08/08/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Summer skiing on glaciers is a leisure activity highly dependent on natural factors like weather and glacier conditions. While the literature agrees that climate change is shaping the fate of summer skiing, longer time series covering both the supply and demand side of glacier/summer skiing, and research that combines natural and non-natural factors affecting the summer ski market are missing. To close this research gap, we conducted a detailed supply-side analysis of nine Austrian glacier ski areas focusing on the number of operating days (in the summer half-year, as well as for meteorological and astronomical summer ski definitions), show how these numbers evolve over time, test how they correlate with meteorological and glaciological data using time-series regression models on a yearly and monthly basis, and highlight how managerial decisions come into play when trying to explain the summer ski supply's decline. Between 2002 and 2019, summer ski operating days in Austrian glacier ski areas declined by 48.3% in the summer half-year, 65.2% in the meteorological, and 62.3% in the astronomical summer parallel to rising mean temperatures and shrinking glaciers. This decrease is strongest in June to September and weakest in May and October but in two glacier ski areas, the operating days in the summer season remain constant or are even on the rise. This is in line with model results indicating that meteorological and glaciological data only explain parts of the variance of the decline trends. Operators' agency, strategies, and decisions play an important role underlining that global warming is not monocausally determining summer ski operation.
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Affiliation(s)
- Marius Mayer
- Department of Strategic Management, Marketing and Tourism, SME & Tourism, Faculty of Business and Management, University of Innsbruck, Universitätsstraße 15, 6020, Innsbruck, Austria.
- Faculty of Tourism, Munich University of Applied Sciences, Schachenmeierstraße 35, 80636, München, Germany.
| | - Bruno Abegg
- Institute for Systemic Management and Public Governance, University of St. Gallen, Dufourstrasse 40a, 9000, St. Gallen, Switzerland
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17
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Hawellek T, von Lewinski G, Lehmann W, Kühn KD. [Cement in revision arthroplasty-what about the "glacier effect"? : Case studies viewed from different perspectives]. Orthopadie (Heidelb) 2024; 53:185-194. [PMID: 37861705 DOI: 10.1007/s00132-023-04452-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/22/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND The number of operations concerning revision arthroplasty has been increasing continuously in recent years, and it can be assumed that they will continue to increase in the future. If an arthroplasty implant becomes loose, it must be changed. The question often arises as to how the new implant should be fixed in the bone. ADVANTAGES Revision implants can be inserted into the bone without cement. In the subsequent period, a secondary osseointegration of the implant takes place. Another possibility is to anchor the implant by using bone cement. The advantage of cemented anchorage is that the implant is firmly fixed in the bone, in principle, immediately, and it is possible to fully load the implant directly. Direct postoperative full weight bearing is helpful, especially for older and multimorbid patients, in order to achieve rapid mobilization. PREREQUISITES AND CHALLENGES When using cement in revision cases, however, there are a few prerequisites and challenges that the surgeon should definitely take into account. In the case of revision, the bone in the former implant bed is often deficient and appears thinned and sclerosed. It is, therefore, important to analyze the bone quality preoperatively on radiographic images and to include it in the planning of the anchoring strategy. In addition, the individual bone quality of the patient must also be taken into account intraoperatively. In any case, it must be clarified whether the basic prerequisites for the sufficient bond strength of the cement with the bone to be formed can still be met. Furthermore, the principles of cementing technique must be strictly observed, and the goal of a perfect cement mantle must be aimed for. If the indication for this is overstated, early loosening of the cemented revision arthroplasty is very likely.
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Affiliation(s)
- Thelonius Hawellek
- Klinik für Unfallchirurgie, Orthopädie und Plastische Chirurgie, Universitätsmedizin Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Deutschland.
| | - Gabriela von Lewinski
- Klinik für Unfallchirurgie, Orthopädie und Plastische Chirurgie, Universitätsmedizin Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Deutschland
| | - Wolfgang Lehmann
- Klinik für Unfallchirurgie, Orthopädie und Plastische Chirurgie, Universitätsmedizin Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Deutschland
| | - Klaus-Dieter Kühn
- Universitätsklinik für Orthopädie und Orthopädische Chirurgie, Medizinische Universität Graz, Graz, Österreich
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18
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Moreno B, Sowa A, Reginia K, Balazy P, Chelchowski M, Ronowicz M, Kuklinski P. Sea water temperature and light intensity at high-Arctic subtidal shallows - 16 years perspective. Sci Data 2024; 11:227. [PMID: 38388536 PMCID: PMC10883912 DOI: 10.1038/s41597-024-03054-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
Manifestations of climate change in the Arctic include an increase in water temperatures and massive loss of sea ice enabling more light penetration. Yet to understand tempo and scale of these parameters change over time, constant monitoring is needed. We present 16-yr long-term datasets of sea water temperature and relative light intensity at two depth strata (8 and 14 ± 1 m) of two hard-bottom sites in southern Isfjorden proper (Spitsbergen, 78°N). The high temporal resolution of the datasets (every 30 min, between 2006-2022) makes them suitable for studying changes at a local scale, correlating environmental variability with observed processes in benthic assemblages, and serving as ground-truth for comparison with, for example, remotely sensed or mooring data. These datasets serve as baseline for long-term investigations in the shallows of a high-Arctic fjord undergoing severe environmental changes.
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Affiliation(s)
- Bernabé Moreno
- Marine Ecology Department, Institute of Oceanology Polish Academy of Sciences, Sopot, Poland.
| | - Anna Sowa
- Marine Ecology Department, Institute of Oceanology Polish Academy of Sciences, Sopot, Poland
| | - Kamil Reginia
- Marine Ecology Department, Institute of Oceanology Polish Academy of Sciences, Sopot, Poland
| | - Piotr Balazy
- Marine Ecology Department, Institute of Oceanology Polish Academy of Sciences, Sopot, Poland
| | - Maciej Chelchowski
- Marine Ecology Department, Institute of Oceanology Polish Academy of Sciences, Sopot, Poland
| | - Marta Ronowicz
- Marine Ecology Department, Institute of Oceanology Polish Academy of Sciences, Sopot, Poland
| | - Piotr Kuklinski
- Marine Ecology Department, Institute of Oceanology Polish Academy of Sciences, Sopot, Poland.
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Yang L, Yu B, Liu H, Ji X, Xiao C, Cao M, Fu J, Zhang Q, Hu L, Yin Y, Shi J, Jiang G. Foraging behavior and sea ice-dependent factors affecting the bioaccumulation of mercury in Antarctic coastal waters. Sci Total Environ 2024; 912:169557. [PMID: 38141978 DOI: 10.1016/j.scitotenv.2023.169557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 11/14/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
To elucidate the potential risks of the toxic pollutant mercury (Hg) in polar waters, the study of accumulated Hg in fish is compelling for understanding the cycling and fate of Hg on a regional scale in Antarctica. Herein, the Hg isotopic compositions of Antarctic cod Notothenia coriiceps were assessed in skeletal muscle, liver, and heart tissues to distinguish the differences in Hg accumulation in isolated coastal environments of the eastern (Chinese Zhongshan Station, ZSS) and the antipode western Antarctica (Chinese Great Wall Station, GWS), which are separated by over 4000 km. Differences in odd mass-independent isotope fractionation (odd-MIF) and mass-dependent fractionation (MDF) across fish tissues were reflection of the specific accumulation of methylmercury (MeHg) and inorganic Hg (iHg) with different isotopic fingerprints. Internal metabolism including hepatic detoxification and processes related to heart may also contribute to MDF. Regional heterogeneity in iHg end-members further provided evidence that bioaccumulated Hg origins can be largely influenced by polar water circumstances and foraging behavior. Sea ice was hypothesized to play critical roles in both the release of Hg with negative odd-MIF derived from photoreduction of Hg2+ on its surface and the impediment of photochemical transformation of Hg in water layers. Overall, the multitissue isotopic compositions in local fish species and prime drivers of the heterogeneous Hg cycling and bioaccumulation patterns presented here enable a comprehensive understanding of Hg biogeochemical cycling in polar coastal waters.
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Affiliation(s)
- Lin Yang
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ben Yu
- National Research Center for Environmental Analysis and Measurement, Beijing 100029, China
| | - Hongwei Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaomeng Ji
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Cailing Xiao
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, School of Environment and Health, Jianghan University, Wuhan 430056, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Mengxi Cao
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, School of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Jianjie Fu
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qinghua Zhang
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ligang Hu
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yongguang Yin
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jianbo Shi
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China.
| | - Guibin Jiang
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
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20
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Guo X, Yan Q, Wang F, Wang W, Zhang Z, Liu Y, Liu K. Habitat-specific patterns of bacterial communities in a glacier-fed lake on the Tibetan Plateau. FEMS Microbiol Ecol 2024; 100:fiae018. [PMID: 38378869 PMCID: PMC10903976 DOI: 10.1093/femsec/fiae018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 12/22/2023] [Accepted: 02/19/2024] [Indexed: 02/22/2024] Open
Abstract
Different types of inlet water are expected to affect microbial communities of lake ecosystems due to changing environmental conditions and the dispersal of species. However, knowledge of the effects of changes in environmental conditions and export of microbial assemblages on lake ecosystems is limited, especially for glacier-fed lakes. Here, we collected water samples from the surface water of a glacier-fed lake and its two fed streams on the Tibetan Plateau to investigate the importance of glacial and non-glacial streams as sources of diversity for lake bacterial communities. Results showed that the glacial stream was an important source of microorganisms in the studied lake, contributing 45.53% to the total bacterial community in the lake water, while only 19.14% of bacterial community in the lake water was seeded by the non-glacial stream. Bacterial communities were significantly different between the glacier-fed lake and its two fed streams. pH, conductivity, total dissolved solids, water temperature and total nitrogen had a significant effect on bacterial spatial turnover, and together explained 36.2% of the variation of bacterial distribution among habitats. Moreover, bacterial co-occurrence associations tended to be stronger in the lake water than in stream habitats. Collectively, this study may provide an important reference for assessing the contributions of different inlet water sources to glacier-fed lakes.
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Affiliation(s)
- Xuezi Guo
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qi Yan
- Center for the Pan-Third Pole Environment, Lanzhou University, Lanzhou 730000, China
| | - Feng Wang
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Wenqiang Wang
- Center for the Pan-Third Pole Environment, Lanzhou University, Lanzhou 730000, China
| | - Zhihao Zhang
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongqin Liu
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
- Center for the Pan-Third Pole Environment, Lanzhou University, Lanzhou 730000, China
| | - Keshao Liu
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
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21
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Mukhia S, Kumar A, Kumar R. Bacterial community distribution and functional potentials provide key insights into their role in the ecosystem functioning of a retreating Eastern Himalayan glacier. FEMS Microbiol Ecol 2024; 100:fiae012. [PMID: 38305149 PMCID: PMC10876117 DOI: 10.1093/femsec/fiae012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 01/23/2024] [Accepted: 01/30/2024] [Indexed: 02/03/2024] Open
Abstract
Himalayan glaciers are receding at an exceptional rate, perturbing the local biome and ecosystem processes. Understanding the microbial ecology of an exclusively microbe-driven biome provides insights into their contributions to the ecosystem functioning through biogeochemical fluxes. Here, we investigated the bacterial communities and their functional potential in the retreating East Rathong Glacier (ERG) of Sikkim Himalaya. Amplicon-based taxonomic classification revealed the dominance of the phyla Proteobacteria, Bacteroidota, and candidate Patescibacteria in the glacial sites. Further, eight good-quality metagenome-assembled genomes (MAGs) of Proteobacteria, Patescibacteria, Acidobacteriota, and Choloflexota retrieved from the metagenomes elucidated the microbial contributions to nutrient cycling. The ERG MAGs showed aerobic respiration as a primary metabolic feature, accompanied by carbon fixation and complex carbon degradation potentials. Pathways for nitrogen metabolism, chiefly dissimilatory nitrate reduction and denitrification, and a complete sulphur oxidation enzyme complex for sulphur metabolism were identified in the MAGs. We observed that DNA repair and oxidative stress response genes complemented with osmotic and periplasmic stress and protein chaperones were vital for adaptation against the intense radiation and stress conditions of the extreme Himalayan niche. Current findings elucidate the microbiome and associated functional potentials of a vulnerable glacier, emphasizing their significant ecological roles in a changing glacial ecosystem.
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Affiliation(s)
- Srijana Mukhia
- Biotechnology Division, CSIR – Institute of Himalayan Bioresource Technology, Post Box No. 06, Palampur 176061, Himachal Pradesh, India
- Department of Microbiology, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Anil Kumar
- Biotechnology Division, CSIR – Institute of Himalayan Bioresource Technology, Post Box No. 06, Palampur 176061, Himachal Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rakshak Kumar
- Biotechnology Division, CSIR – Institute of Himalayan Bioresource Technology, Post Box No. 06, Palampur 176061, Himachal Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Pagano AM, Rode KD, Lunn NJ, McGeachy D, Atkinson SN, Farley SD, Erlenbach JA, Robbins CT. Polar bear energetic and behavioral strategies on land with implications for surviving the ice-free period. Nat Commun 2024; 15:947. [PMID: 38351211 PMCID: PMC10864307 DOI: 10.1038/s41467-023-44682-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 12/21/2023] [Indexed: 02/16/2024] Open
Abstract
Declining Arctic sea ice is increasing polar bear land use. Polar bears on land are thought to minimize activity to conserve energy. Here, we measure the daily energy expenditure (DEE), diet, behavior, movement, and body composition changes of 20 different polar bears on land over 19-23 days from August to September (2019-2022) in Manitoba, Canada. Polar bears on land exhibited a 5.2-fold range in DEE and 19-fold range in activity, from hibernation-like DEEs to levels approaching active bears on the sea ice, including three individuals that made energetically demanding swims totaling 54-175 km. Bears consumed berries, vegetation, birds, bones, antlers, seal, and beluga. Beyond compensating for elevated DEE, there was little benefit from terrestrial foraging toward prolonging the predicted time to starvation, as 19 of 20 bears lost mass (0.4-1.7 kg•day-1). Although polar bears on land exhibit remarkable behavioral plasticity, our findings reinforce the risk of starvation, particularly in subadults, with forecasted increases in the onshore period.
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Affiliation(s)
- Anthony M Pagano
- U. S. Geological Survey, Alaska Science Center, Anchorage, AK, 99508, USA.
| | - Karyn D Rode
- U. S. Geological Survey, Alaska Science Center, Anchorage, AK, 99508, USA
| | - Nicholas J Lunn
- Wildlife Research Division, Science and Technology Branch, Environment and Climate Change Canada, Edmonton, AB, T6G 2E9, Canada
| | - David McGeachy
- Wildlife Research Division, Science and Technology Branch, Environment and Climate Change Canada, Edmonton, AB, T6G 2E9, Canada
| | | | - Sean D Farley
- Alaska Department of Fish and Game, Anchorage, AK, 99518, USA
| | - Joy A Erlenbach
- School of Biological Sciences, Washington State University, Pullman, WA, 99164, USA
- U.S. Fish and Wildlife Service, Kodiak National Wildlife Refuge, Kodiak, AK, 99615, USA
| | - Charles T Robbins
- School of Biological Sciences, Washington State University, Pullman, WA, 99164, USA
- School of the Environment, Washington State University, Pullman, WA, 99164, USA
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23
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Mitkari KV, Sofat S, Arora MK, Tiwari RK. Relationship between the variations in glacier features classified on a large scale with climate variables: a case study of Gangotri Glacier. Environ Monit Assess 2024; 196:254. [PMID: 38342848 DOI: 10.1007/s10661-024-12417-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/29/2024] [Indexed: 02/13/2024]
Abstract
Changes in glacier area, glacial lakes, debris cover, and geomorphological features such as debris fans have a significant impact on glacial dynamics. Therefore, precise and timely observation and tracking of glacier surface changes is a necessity. The availability of high spatial resolution remote sensing images has made it viable to analyse the glacier surface changes at a local level. However, with an increase in spatial resolution, the spectral variability increases, giving rise to additional challenges (such as false changes and misregistration) in the change detection process. These challenges can preferably be dealt with using an object-based change detection (OBCD) approach rather than the conventional pixel-based change detection approach. Therefore, this study has proposed an OBCD methodology using high-spatial-resolution remote sensing images to detect changes in glacier features. Variability in glacier features has been further analysed by associating it with important climate variables, that is, air temperature and precipitation. As a case study, the changes in Gangotri Glacier (Uttarakhand Himalayas in India) features have been studied using high-spatial-resolution WorldView-2 and Linear Imaging Self-Scanning System (LISS)-4 images for a 3-year period 2011-2014. The spectral correspondences between glacier surface and non-glacier surface have been handled by considering brightness temperature and slope as ancillary data to improvise their distinction. A change detection accuracy of ~ 84% has been obtained using the OBCD approach. Results further show that the variations in glacier features are in congruence with the climatic observations.
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Affiliation(s)
- Kavita Vaijanath Mitkari
- Department of Computer Science and Engineering, Punjab Engineering College (Deemed to be University), Sector 12, Chandigarh, 160012, India.
| | - Sanjeev Sofat
- Department of Computer Science and Engineering, Punjab Engineering College (Deemed to be University), Sector 12, Chandigarh, 160012, India
| | - Manoj Kumar Arora
- Mangalagiri-Mandal, Neeru Konda, SRM University, Amaravati, Andhra Pradesh, 522502, India
| | - Reet Kamal Tiwari
- Department of Civil Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab, 140001, India
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24
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Williams TM. Racing extinction: Can science act fast enough to save large, endangered mammals? Science 2024; 383:eadn9607. [PMID: 38301002 DOI: 10.1126/science.adn9607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
How far can a polar bear swim? The answer to that one question could have altered the course of the global warming movement and tempered current public distrust in scienceand scientists. As is the case for many large, fierce mammals, many aspects of the basic biology that dictate what polar bears (Ursus maritimus) need to survive in a changing world remain a mystery. We don't know the limitations of the bear's thermoregulatory or swimming capabilities in Arctic waters. Nor do we know whether a terrestrial diet of berries and scavenging is able to sustain a mother bear throughout pregnancy and cub rearing should the continued deterioration of sea ice force them to remain on land. At a time when understanding animal capacities and resiliency in the face of human perturbation is crucial to species survival, science has been unable to keep pace with emerging environmental threats.
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Affiliation(s)
- Terrie M Williams
- Department of Ecology and Evolutionary Biology, University of California-Santa Cruz, CA USA.
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25
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Evgrafova SY, Mavlyudov BR, Chukmasov PV, Chetverova AA, Masyagina OV. Fossil mosses are emitting methane after maritime Antarctic glacier retreat. Mar Pollut Bull 2024; 199:115959. [PMID: 38154169 DOI: 10.1016/j.marpolbul.2023.115959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 12/15/2023] [Accepted: 12/17/2023] [Indexed: 12/30/2023]
Abstract
In the extraordinary weather conditions of the austral summer of 2023, fossil mosses thawed out from under the Bellingshausen Ice Dome, King George Island, Southern Shetland Archipelago of maritime Antarctica. At the end of the austral summer, we directly measured greenhouse gas fluxes (CH4 and CO2) from the surface of fossil mosses. We showed that fossil mosses were strong emitters of CH4 and weak emitters of CO2. The real-time measured CH4 emissions reached 0.173 μmol m-2 s-1, which is comparable to CH4 efflux in water bodies or wet tundra in the Arctic.
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Affiliation(s)
- Svetlana Y Evgrafova
- Sukachev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS", 50/28 Akademgorodok st., 660036 Krasnoyarsk, Russian Federation; Siberian Federal University, 660041 Krasnoyarsk, Russian Federation; Melnikov Permafrost Institute of the Siberian Branch of the Russian Academy of Science, 677010 Yakutsk, Russian Federation
| | - Bulat R Mavlyudov
- Institute of Geography, Russian Academy of Sciences, Staromonetnyy Pereulok, 29, Moscow 119017, Russian Federation
| | - Pavel V Chukmasov
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow 119071, Russian Federation
| | - Antonina A Chetverova
- St. Petersburg University, St. Petersburg 199034, Russian Federation; Arctic and Antarctic Research Institute, St. Petersburg 199397, Russian Federation
| | - Oxana V Masyagina
- Sukachev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS", 50/28 Akademgorodok st., 660036 Krasnoyarsk, Russian Federation.
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26
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Weij R, Sniderman JMK, Woodhead JD, Hellstrom JC, Brown JR, Drysdale RN, Reed E, Bourne S, Gordon J. Elevated Southern Hemisphere moisture availability during glacial periods. Nature 2024; 626:319-326. [PMID: 38326596 DOI: 10.1038/s41586-023-06989-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 12/15/2023] [Indexed: 02/09/2024]
Abstract
Late Pleistocene ice-age climates are routinely characterized as having imposed moisture stress on low- to mid-latitude ecosystems1-5. This idea is largely based on fossil pollen evidence for widespread, low-biomass glacial vegetation, interpreted as indicating climatic dryness6. However, woody plant growth is inhibited under low atmospheric CO2 (refs. 7,8), so understanding glacial environments requires the development of new palaeoclimate indicators that are independent of vegetation9. Here we show that, contrary to expectations, during the past 350 kyr, peaks in southern Australian climatic moisture availability were largely confined to glacial periods, including the Last Glacial Maximum, whereas warm interglacials were relatively dry. By measuring the timing of speleothem growth in the Southern Hemisphere subtropics, which today has a predominantly negative annual moisture balance, we developed a record of climatic moisture availability that is independent of vegetation and extends through multiple glacial-interglacial cycles. Our results demonstrate that a cool-moist response is consistent across the austral subtropics and, in part, may result from reduced evaporation under cool glacial temperatures. Insofar as cold glacial environments in the Southern Hemisphere subtropics have been portrayed as uniformly arid3,10,11, our findings suggest that their characterization as evolutionary or physiological obstacles to movement and expansion of animal, plant and, potentially, human populations10 should be reconsidered.
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Affiliation(s)
- Rieneke Weij
- School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria, Australia.
- Department of Geological Sciences and the Human Evolution Research Institute, University of Cape Town, Rondebosch, Western Cape, South Africa.
| | - J M Kale Sniderman
- School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria, Australia.
| | - Jon D Woodhead
- School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria, Australia
| | - John C Hellstrom
- School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria, Australia
| | - Josephine R Brown
- School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria, Australia
| | - Russell N Drysdale
- School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria, Australia
- Environnements, Dynamiques et Territoires de la Montagne, UMR CNRS, Université de Savoie-Mont, Chambéry, France
| | - Elizabeth Reed
- School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia
- South Australian Museum, Adelaide, South Australia, Australia
| | - Steven Bourne
- Limestone Coast Landscape Board, Mount Gambier, South Australia, Australia
| | - Jay Gordon
- School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria, Australia
- IEEFA, Melbourne, Victoria, Australia
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27
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Leng X, Feng X, Feng Y, Sun C, Liu X, Zhang Y, Zhou C, Wang Y, Fu B. Imbalance in lake variability but not embodying driving factors on the Qinghai-Tibetan Plateau calls on heterogeneous lake management. J Environ Manage 2024; 351:119887. [PMID: 38169255 DOI: 10.1016/j.jenvman.2023.119887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 12/18/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024]
Abstract
Comprehensive regional remote analysis tends to neglect lakes in exorheic basins on the Qinghai-Tibetan Plateau (QTP), and a concurrent lack of discussions on whether there exist imbalanced explanations for the driving forces of both internal and external lakes is also present. We integrate multisourced lake datasets, high-resolution information, and available altimetry datasets to establish multiple mathematical models to meta-simulate lake volume changes, extend current lake variation datasets, and quantify the imbalance of variations and factors driving the water mass budget. The results showed that the primary cause of lake variations in QTP is net precipitation (57.75 ± 31.46%), followed by glacier runoff (33.53 ± 31.42%), and permafrost (8.34 ± 7.87%). Even though glacier runoff is currently considered as a weak factor of lake variation, heterogeneous results call for remaining attention in glacier-induced lake basins. Imbalance embodying in lake variability but not in contributions of driving factors, which calls for special lake management ways in different watersheds.
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Affiliation(s)
- Xuejing Leng
- State Key Laboratory of Uran and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 00049, China
| | - Xiaoming Feng
- State Key Laboratory of Uran and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Yu Feng
- School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Chuanlian Sun
- State Key Laboratory of Uran and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 00049, China
| | - Xiaochi Liu
- School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Yu Zhang
- State Key Laboratory of Uran and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 00049, China
| | - Chaowei Zhou
- State Key Laboratory of Uran and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 00049, China
| | - Yunqiang Wang
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710075, China
| | - Bojie Fu
- State Key Laboratory of Uran and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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28
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Ren Z, Gao H. Antibiotic resistance genes in integrated surface ice, cryoconite, and glacier-fed stream in a mountain glacier in Central Asia. Environ Int 2024; 184:108482. [PMID: 38324929 DOI: 10.1016/j.envint.2024.108482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/16/2024] [Accepted: 02/02/2024] [Indexed: 02/09/2024]
Abstract
Glacier ice, cryoconite, and glacier-fed streams are interconnected features that have important implications for the dynamics and distribution of abiotic and biotic materials. However, the presence and behavior of antibiotic resistance genes (ARGs) within these glacial environments remained largely unexplored. Addressing this gap, we hypothesized that ARGs are widely distributed and exhibit distinct yet interconnected patterns of diversity and dynamics in these glacial environments. Here, we investigated ARGs in a mountain glacier in Central Asia. A total of 944 ARGs, spanning 22 antibiotic classes, were identified, with 633 ARGs shared across all three environments. Cryoconite exhibited the highest ARG richness, followed by ice, while stream biofilm displayed the lowest value. Exploring ARG profiles, we observed a consistent pattern in terms of antibiotic class and resistance mechanism across all three environments. Beta-lactam resistance genes exhibited the highest diversity, followed by multidrug, glycopeptide, and MLS. The predominant mechanisms were antibiotic inactivation, antibiotic efflux, and target alteration. The most prevalent ARG is cls, followed by mdfA, ropB, fabI, and macB. The similarity in ARG profiles between surface ice and cryoconite samples was more pronounced than their resemblance to stream biofilm samples. The variations of ARG profiles between any pair of environments were largely contributed by turnover component. Further insights into microbial interactions revealed 2328 significant associations between 80 OTUs and 356 ARGs, indicating complex relationships. Certain OTUs, including those from the genera Polaromonas, Ferruginibacter, Hymenobacter, Phormidesmis, Novosphingobium, and Polymorphobacter, were speculated as potential hosts for a variety of ARGs. Our findings underscore the intricate dynamics of antibiotic resistance in glacial ecosystems, emphasizing the need for a holistic understanding of ARG distribution, diversity, and associations across diverse environmental compartments. This research contributes valuable insights into the potential ecological implications of antibiotic resistance dissemination in cold environments, particularly as influenced by increasing climate change.
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Affiliation(s)
- Ze Ren
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Hongkai Gao
- Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China.
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29
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A glacier’s ‘memory’ is fading because of climate change. Nature 2024; 626:237-237. [PMID: 38302699 DOI: 10.1038/d41586-024-00244-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
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30
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Jongsomjit D, Lescroël A, Schmidt AE, Lisovski S, Ainley DG, Hines E, Elrod M, Dugger KM, Ballard G. Going with the floe: Sea-ice movement affects distance and destination during Adélie penguin winter movements. Ecology 2024; 105:e4196. [PMID: 37885122 DOI: 10.1002/ecy.4196] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 08/22/2023] [Accepted: 09/19/2023] [Indexed: 10/28/2023]
Abstract
Seasonal migration, driven by shifts in annual climate cycles and resources, is a key part of the life history and ecology of species across taxonomic groups. By influencing the amount of energy needed to move, external forces such as wind and ocean currents are often key drivers of migratory pathways exposing individuals to varying resources, environmental conditions, and competition pressures impacting individual fitness and population dynamics. Although wildlife movements in connection with wind and ocean currents are relatively well understood, movements within sea-ice fields have been much less studied, despite sea ice being an integral part of polar ecology. Adélie penguins (Pygoscelis adeliae) in the southern Ross Sea, Antarctica, currently exist at the southernmost edge of their range and undergo the longest (~12,000 km) winter migration known for the species. Within and north of the Ross Sea, the Ross Gyre drives ocean circulation and the large-scale movement of sea ice. We used remotely sensed sea-ice movement data together with geolocation-based penguin movement data to test the hypothesis that penguins use gyre-driven sea-ice movement to aid their migration. We found that penguins traveled greater distances when their movement vectors were aligned with those of sea ice (i.e., ice support) and the amount of ice support received depended on which route a penguin took. We also found that birds that took an eastern route traveled significantly further north in two of the 3 years we examined, coinciding with higher velocities of sea ice in those years. We compare our findings to patterns observed in migrating species that utilize air or water currents for their travel and with other studies showing the importance of ocean/sea-ice circulation patterns to wildlife movement and life history patterns within the Ross Sea. Changes in sea ice may have consequences not only for energy expenditure but, by altering migration and movement pathways, to the ecological interactions that exist in this region.
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Affiliation(s)
- Dennis Jongsomjit
- Point Blue Conservation Science, Petaluma, California, USA
- Department of Geography and Environment, San Francisco State University, San Francisco, California, USA
| | | | | | - Simeon Lisovski
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
| | | | - Ellen Hines
- Department of Geography and Environment, San Francisco State University, San Francisco, California, USA
- Estuary & Ocean Science Center, San Francisco State University, Tiburon, California, USA
| | - Megan Elrod
- Point Blue Conservation Science, Petaluma, California, USA
| | - Katie M Dugger
- US Geological Survey, Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries, Wildlife, and Conservation Sciences, Oregon State University, Corvallis, Oregon, USA
| | - Grant Ballard
- Point Blue Conservation Science, Petaluma, California, USA
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31
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Miles BWJ, Bingham RG. Progressive unanchoring of Antarctic ice shelves since 1973. Nature 2024; 626:785-791. [PMID: 38383628 PMCID: PMC10881387 DOI: 10.1038/s41586-024-07049-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 01/09/2024] [Indexed: 02/23/2024]
Abstract
Mass loss of the Antarctic Ice Sheet has been driven primarily by the thinning of the floating ice shelves that fringe the ice sheet1, reducing their buttressing potential and causing land ice to accelerate into the ocean2. Observations of ice-shelf thickness change by satellite altimetry stretch back only to 1992 (refs. 1,3-5) and previous information about thinning remains unquantified. However, extending the record of ice-shelf thickness change is possible by proxy, by measuring the change in area of the surface expression of pinning points-local bathymetric highs on which ice shelves are anchored6. Here we measure pinning-point change over three epochs spanning the periods 1973-1989, 1989-2000 and 2000-2022, and thus by proxy infer changes to ice-shelf thickness back to 1973-1989. We show that only small localized pockets of ice shelves were thinning between 1973 and 1989, located primarily in the Amundsen Sea Embayment and the Wilkes Land coastline. Ice-shelf thinning spreads rapidly into the 1990s and 2000s and is best characterized by the proportion of pinning points reducing in extent. Only 15% of pinning points reduced from 1973 to 1989, before increasing to 25% from 1989 to 2000 and 37% from 2000 to 2022. A continuation of this trend would further reduce the buttressing potential of ice shelves, enhancing ice discharge and accelerating the contribution of Antarctica to sea-level rise.
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32
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Cantera I, Carteron A, Guerrieri A, Marta S, Bonin A, Ambrosini R, Anthelme F, Azzoni RS, Almond P, Alviz Gazitúa P, Cauvy-Fraunié S, Ceballos Lievano JL, Chand P, Chand Sharma M, Clague J, Cochachín Rapre JA, Compostella C, Cruz Encarnación R, Dangles O, Eger A, Erokhin S, Franzetti A, Gielly L, Gili F, Gobbi M, Hågvar S, Khedim N, Meneses RI, Peyre G, Pittino F, Rabatel A, Urseitova N, Yang Y, Zaginaev V, Zerboni A, Zimmer A, Taberlet P, Diolaiuti GA, Poulenard J, Thuiller W, Caccianiga M, Ficetola GF. The importance of species addition 'versus' replacement varies over succession in plant communities after glacier retreat. Nat Plants 2024; 10:256-267. [PMID: 38233559 DOI: 10.1038/s41477-023-01609-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 12/06/2023] [Indexed: 01/19/2024]
Abstract
The mechanisms underlying plant succession remain highly debated. Due to the local scope of most studies, we lack a global quantification of the relative importance of species addition 'versus' replacement. We assessed the role of these processes in the variation (β-diversity) of plant communities colonizing the forelands of 46 retreating glaciers worldwide, using both environmental DNA and traditional surveys. Our findings indicate that addition and replacement concur in determining community changes in deglaciated sites, but their relative importance varied over time. Taxa addition dominated immediately after glacier retreat, as expected in harsh environments, while replacement became more important for late-successional communities. These changes were aligned with total β-diversity changes, which were more pronounced between early-successional communities than between late-successional communities (>50 yr since glacier retreat). Despite the complexity of community assembly during plant succession, the observed global pattern suggests a generalized shift from the dominance of facilitation and/or stochastic processes in early-successional communities to a predominance of competition later on.
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Affiliation(s)
- Isabel Cantera
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy.
| | - Alexis Carteron
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Université de Toulouse, Ecole d'Ingénieurs de Purpan, UMR INRAE-INPT DYNAFOR, Toulouse, France
| | - Alessia Guerrieri
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Argaly, Bâtiment CleanSpace, Sainte-Hélène-du-Lac, France
| | - Silvio Marta
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Institute of Geosciences and Earth Resources, CNR, Pisa, Italy
| | - Aurélie Bonin
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Argaly, Bâtiment CleanSpace, Sainte-Hélène-du-Lac, France
| | - Roberto Ambrosini
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
| | - Fabien Anthelme
- Laboratory AMAP, IRD, University of Montpellier, CIRAD, CNRS, INRA, Montpellier, France
| | - Roberto Sergio Azzoni
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Dipartimento di Scienze della Terra 'Ardito Desio', Milano, Italy
| | - Peter Almond
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, New Zealand
| | - Pablo Alviz Gazitúa
- Departamento de Ciencias Biológicas y Biodiversidad, Universidad de Los Lagos, Osorno, Chile
| | | | | | - Pritam Chand
- Department of Geography, School of Environment and Earth Sciences, Central University of Punjab, VPO- Ghudda, Bathinda, Punjab, India
| | - Milap Chand Sharma
- Centre for the Study of Regional Development - School of Social Sciences, Jawaharlal Nehru University, New Delhi, India
| | - John Clague
- Department of Earth Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | | | | | | | - Olivier Dangles
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Andre Eger
- Mannaki Whenua - Landcare Research, Soils and Landscapes, Lincoln, New Zealand
| | - Sergey Erokhin
- Institute of Water Problems and Hydro-Energy, Kyrgyz National Academy of Sciences, Bishkek, Kyrgyzstan
| | - Andrea Franzetti
- Department of Earth and Environmental Sciences (DISAT), - University of Milano-Bicocca, Milano, Italy
| | - Ludovic Gielly
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
| | - Fabrizio Gili
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Mauro Gobbi
- Research and Museum Collections Office, Climate and Ecology Unit, MUSE-Science Museum, Trento, Italy
| | - Sigmund Hågvar
- Faculty of Environmental Sciences and Natural Resource Management (INA), Norwegian University of Life Sciences, Ås, Norway
- UiT - The Arctic University of Norway, Tromsø Museum, Tromsø, Norway
| | - Norine Khedim
- Univ. Savoie Mont Blanc, Univ. Grenoble Alpes, EDYTEM, Chambéry, France
| | - Rosa Isela Meneses
- Herbario Nacional de Bolivia: La Paz, La Paz, Bolivia
- Universidad Católica del Norte, Antofagasta, Chile
| | - Gwendolyn Peyre
- Department of Civil and Environmental Engineering, University of the Andes, Bogotá, Colombia
| | - Francesca Pittino
- Department of Earth and Environmental Sciences (DISAT), - University of Milano-Bicocca, Milano, Italy
| | - Antoine Rabatel
- Univ. Grenoble Alpes, CNRS, IRD, Grenoble-INP, Institut des Géosciences de l'Environnement (IGE, UMR 5001), Grenoble, France
| | - Nurai Urseitova
- Institute of Water Problems and Hydro-Energy, Kyrgyz National Academy of Sciences, Bishkek, Kyrgyzstan
| | - Yan Yang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
| | - Vitalii Zaginaev
- Mountain Societies Research Institute, University of Central Asia, Bishkek, Kyrgyzstan
| | - Andrea Zerboni
- Dipartimento di Scienze della Terra 'Ardito Desio', Milano, Italy
| | - Anaïs Zimmer
- Department of Geography and the Environment, University of Texas at Austin, Austin, TX, USA
| | - Pierre Taberlet
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
- UiT - The Arctic University of Norway, Tromsø Museum, Tromsø, Norway
| | | | - Jerome Poulenard
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Wilfried Thuiller
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
| | - Marco Caccianiga
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | - Gentile Francesco Ficetola
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
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Doting EL, Jensen MB, Peter EK, Ellegaard-Jensen L, Tranter M, Benning LG, Hansen M, Anesio AM. The exometabolome of microbial communities inhabiting bare ice surfaces on the southern Greenland Ice Sheet. Environ Microbiol 2024; 26:e16574. [PMID: 38263628 DOI: 10.1111/1462-2920.16574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 12/20/2023] [Indexed: 01/25/2024]
Abstract
Microbial blooms colonize the Greenland Ice Sheet bare ice surface during the ablation season and significantly reduce its albedo. On the ice surface, microbes are exposed to high levels of irradiance, freeze-thaw cycles, and low nutrient concentrations. It is well known that microorganisms secrete metabolites to maintain homeostasis, communicate with other microorganisms, and defend themselves. Yet, the exometabolome of supraglacial microbial blooms, dominated by the pigmented glacier ice algae Ancylonema alaskanum and Ancylonema nordenskiöldii, remains thus far unstudied. Here, we use a high-resolution mass spectrometry-based untargeted metabolomics workflow to identify metabolites in the exometabolome of microbial blooms on the surface of the southern tip of the Greenland Ice Sheet. Samples were collected every 6 h across two diurnal cycles at 5 replicate sampling sites with high similarity in community composition, in terms of orders and phyla present. Time of sampling explained 46% (permutational multivariate analysis of variance [PERMANOVA], pseudo-F = 3.7771, p = 0.001) and 27% (PERMANOVA, pseudo-F = 1.8705, p = 0.001) of variance in the exometabolome across the two diurnal cycles. Annotated metabolites included riboflavin, lumichrome, tryptophan, and azelaic acid, all of which have demonstrated roles in microbe-microbe interactions in other ecosystems and should be tested for potential roles in the development of microbial blooms on bare ice surfaces.
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Affiliation(s)
- Eva L Doting
- Department of Environmental Science, iClimate, Aarhus University, Roskilde, Denmark
- Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Marie B Jensen
- Department of Environmental Science, iClimate, Aarhus University, Roskilde, Denmark
| | - Elisa K Peter
- Interface Geochemistry Section, German Research Centre for Geosciences, Potsdam, Germany
- Department of Earth Sciences, Freie Universität Berlin, Berlin, Germany
| | - Lea Ellegaard-Jensen
- Department of Environmental Science, iClimate, Aarhus University, Roskilde, Denmark
| | - Martyn Tranter
- Department of Environmental Science, iClimate, Aarhus University, Roskilde, Denmark
| | - Liane G Benning
- Interface Geochemistry Section, German Research Centre for Geosciences, Potsdam, Germany
- Department of Earth Sciences, Freie Universität Berlin, Berlin, Germany
| | - Martin Hansen
- Department of Environmental Science, iClimate, Aarhus University, Roskilde, Denmark
| | - Alexandre M Anesio
- Department of Environmental Science, iClimate, Aarhus University, Roskilde, Denmark
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Soderlund KM, Rovira-Navarro M, Le Bars M, Schmidt BE, Gerkema T. The Physical Oceanography of Ice-Covered Moons. Ann Rev Mar Sci 2024; 16:25-53. [PMID: 37669566 DOI: 10.1146/annurev-marine-040323-101355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
In the outer solar system, a growing number of giant planet satellites are now known to be abodes for global oceans hidden below an outer layer of ice. These planetary oceans are a natural laboratory for studying physical oceanographic processes in settings that challenge traditional assumptions made for Earth's oceans. While some driving mechanisms are common to both systems, such as buoyancy-driven flows and tides, others, such as libration, precession, and electromagnetic pumping, are likely more significant for moons in orbit around a host planet. Here, we review these mechanisms and how they may operate across the solar system, including their implications for ice-ocean interactions. Future studies should continue to advance our understanding of each of these processes as well as how they may act together in concert. This interplay also has strong implications for habitability as well as testing oceanic hypotheses with future missions.
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Affiliation(s)
- Krista M Soderlund
- Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, Texas, USA;
| | - Marc Rovira-Navarro
- Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona, USA;
| | - Michael Le Bars
- CNRS, Aix Marseille Univ, Centrale Marseille, IRPHE, Marseille, France;
| | - Britney E Schmidt
- Departments of Astronomy and of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York, USA;
| | - Theo Gerkema
- Department of Estuarine and Delta Systems, NIOZ Royal Netherlands Institute for Sea Research, Yerseke, The Netherlands;
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Hauer ME, Jacobs SA, Kulp SA. Climate migration amplifies demographic change and population aging. Proc Natl Acad Sci U S A 2024; 121:e2206192119. [PMID: 38190539 PMCID: PMC10801880 DOI: 10.1073/pnas.2206192119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 10/16/2022] [Indexed: 01/10/2024] Open
Abstract
The warnings of potential climate migration first appeared in the scientific literature in the late 1970s when increased recognition that disintegrating ice sheets could drive people to migrate from coastal cities. Since that time, scientists have modeled potential climate migration without integrating other population processes, potentially obscuring the demographic amplification of this migration. Climate migration could amplify demographic change-enhancing migration to destinations and suppressing migration to origins. Additionally, older populations are the least likely to migrate, and climate migration could accelerate population aging in origin areas. Here, we investigate climate migration under sea-level rise (SLR), a single climatic hazard, and examine both the potential demographic amplification effect and population aging by combining matrix population models, flood hazard models, and a migration model built on 40 y of environmental migration in the United States to project the US population distribution of US counties. We find that the demographic amplification of SLR for all feasible Representative Concentration Pathway-Shared Socioeconomic Pathway (RCP-SSP) scenarios in 2100 ranges between 8.6-28 M [5.7-53 M]-5.3 and 18 times the number of migrants (0.4-10 M). We also project significant aging of coastal areas as youthful populations migrate but older populations remain, accelerating population aging in origin areas. As the percentage of the population lost due to climate migration increases, the median age also increases-up to 10+ y older in some highly impacted coastal counties. Additionally, our population projection approach can be easily adapted to investigate additional or multiple climate hazards.
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Affiliation(s)
- Mathew E. Hauer
- Department of Sociology, Florida State University, Tallahassee, FL32306
- Center for Demography and Population Health, Florida State University, Tallahassee, FL32306
| | - Sunshine A. Jacobs
- Department of Sociology, Florida State University, Tallahassee, FL32306
- Center for Demography and Population Health, Florida State University, Tallahassee, FL32306
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Silva JPD, Veloso TGR, Costa MD, Souza JJLLD, Soares EMB, Gomes LC, Schaefer CEGR. Microbial successional pattern along a glacier retreat gradient from Byers Peninsula, Maritime Antarctica. Environ Res 2024; 241:117548. [PMID: 37939803 DOI: 10.1016/j.envres.2023.117548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/25/2023] [Accepted: 10/30/2023] [Indexed: 11/10/2023]
Abstract
The retreat of glaciers in Antarctica has increased in the last decades due to global climate change, influencing vegetation expansion, and soil physico-chemical and biological attributes. However, little is known about soil microbiology diversity in these periglacial landscapes. This study characterized and compared bacterial and fungal diversity using metabarcoding of soil samples from the Byers Peninsula, Maritime Antarctica. We identified bacterial and fungal communities by amplification of bacterial 16 S rRNA region V3-V4 and fungal internal transcribed spacer 1 (ITS1). We also applied 14C dating on soil organic matter (SOM) from six profiles. Physico-chemical analyses and attributes associated with SOM were evaluated. A total of 14,048 bacterial ASVs were obtained, and almost all samples had 50% of their sequences assigned to Actinobacteriota and Proteobacteria. Regarding the fungal community, Mortierellomycota, Ascomycota and Basidiomycota were the main phyla from 1619 ASVs. We found that soil age was more relevant than the distance from the glacier, with the oldest soil profile (late Holocene soil profile) hosting the highest bacterial and fungal diversity. The microbial indices of the fungal community were correlated with nutrient availability, soil reactivity and SOM composition, whereas the bacterial community was not correlated with any soil attribute. The bacterial diversity, richness, and evenness varied according to presence of permafrost and moisture regime. The fungal community richness in the surface horizon was not related to altitude, permafrost, or moisture regime. The soil moisture regime was crucial for the structure, high diversity and richness of the microbial community, specially to the bacterial community. Further studies should examine the relationship between microbial communities and environmental factors to better predict changes in this terrestrial ecosystem.
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Affiliation(s)
- Jônatas Pedro da Silva
- Graduate Program in Soils and Plant Nutrition, Soil Science Department, Universidade Federal de Viçosa - UFV, Viçosa, MG, Brazil; Soil Science Department, Universidade Federal de Viçosa - UFV, Viçosa, MG, Brazil
| | | | - Maurício Dutra Costa
- Microbiology Department, Universidade Federal de Viçosa - UFV, Viçosa, MG, Brazil; Bolsista Pesquisador Do Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq, Brasília, DF, Brazil
| | - José João Lelis Leal de Souza
- Soil Science Department, Universidade Federal de Viçosa - UFV, Viçosa, MG, Brazil; Bolsista Pesquisador Do Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq, Brasília, DF, Brazil
| | | | | | - Carlos Ernesto G R Schaefer
- Soil Science Department, Universidade Federal de Viçosa - UFV, Viçosa, MG, Brazil; Bolsista Pesquisador Do Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq, Brasília, DF, Brazil
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Wang Y, Xu N, Chen B, Zhang Z, Lei C, Zhang Q, Gu Y, Wang T, Wang M, Penuelas J, Qian H. Metagenomic analysis of antibiotic-resistance genes and viruses released from glaciers into downstream habitats. Sci Total Environ 2024; 908:168310. [PMID: 37944612 DOI: 10.1016/j.scitotenv.2023.168310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/12/2023]
Abstract
Glaciers serve as effective reservoirs of antibiotic resistance genes (ARGs) and viruses for millions of years. Climate change and anthropogenic activity have accelerated the melting of glaciers, but the patterns of release of ARGs and viruses from melting glaciers into downstream habitats remain unknown. We analyzed 171 metagenomic samples from glaciers and their downstream habitats and found that the abundance and diversity of ARGs were higher in glaciers (polar and plateau glaciers) than downstream habitats (Arctic Ocean, Qinghai Lake, and Yangtze River Basin), with the diversity of viruses having the opposite pattern. Proteobacteria and Actinobacteria were the main potential hosts of ARGs and viruses, and the richness of ARGs carried by the hosts was positively correlated with viral abundance, suggesting that the transmission of viruses in the hosts could disseminate ARGs. Source tracking indicated that >18 % of the ARGs and >25 % of the viruses detected in downstream habitats originated from glaciers, demonstrating that glaciers could be one of the potential sources of ARGs and viruses in downstream habitats. Increased solar radiation and emission of carbon dioxide mainly influenced the release of the ARGs and viruses from glaciers into downstream habitats. This study provides a systematic insight demonstrating the release of ARGs and viruses from the melting glaciers, potentially increasing ecological pressure.
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Affiliation(s)
- Yan Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Chaotang Lei
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yanpeng Gu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Tingzhang Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310012, PR China
| | - Meixia Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310012, PR China
| | - Josep Penuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Barcelona 08193, Catalonia, Spain; CREAF, Campus Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona 08193, Catalonia, Spain
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China.
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Clemens-Sewall D, Polashenski C, Raphael IA, Parno M, Perovich D, Itkin P, Jaggi M, Jutila A, Macfarlane AR, Matero ISO, Oggier M, Visser RJW, Wagner DN. High-resolution repeat topography of drifting ice floes in the Arctic Ocean from terrestrial laser scanning. Sci Data 2024; 11:70. [PMID: 38218968 PMCID: PMC10787767 DOI: 10.1038/s41597-023-02882-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 12/27/2023] [Indexed: 01/15/2024] Open
Abstract
Snow and ice topography impact and are impacted by fluxes of mass, energy, and momentum in Arctic sea ice. We measured the topography on approximately a 0.5 km2 drifting parcel of Arctic sea ice on 42 separate days from 18 October 2019 to 9 May 2020 via Terrestrial Laser Scanning (TLS). These data are aligned into an ice-fixed, lagrangian reference frame such that topographic changes (e.g., snow accumulation) can be observed for time periods of up to six months. Using in-situ measurements, we have validated the vertical accuracy of the alignment to ± 0.011 m. This data collection and processing workflow is the culmination of several prior measurement campaigns and may be generally applied for repeat TLS measurements on drifting sea ice. We present a description of the data, a software package written to process and align these data, and the philosophy of the data processing. These data can be used to investigate snow accumulation and redistribution, ice dynamics, surface roughness, and they can provide valuable context for co-located measurements.
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Affiliation(s)
- David Clemens-Sewall
- Thayer School of Engineering at Dartmouth College, Hanover, NH, USA.
- NSF National Center for Atmospheric Research, Boulder, CO, USA.
| | - Chris Polashenski
- Thayer School of Engineering at Dartmouth College, Hanover, NH, USA
- USACE-CRREL Fort Wainwright, Fairbanks, AK, USA
| | - Ian A Raphael
- Thayer School of Engineering at Dartmouth College, Hanover, NH, USA
| | | | - Don Perovich
- Thayer School of Engineering at Dartmouth College, Hanover, NH, USA
| | - Polona Itkin
- UiT The Arctic University of Norway, Tromso, Norway
| | - Matthias Jaggi
- WSL Snow and Avalanche Research Institute SLF, Davos, Switzerland
| | - Arttu Jutila
- Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, 27570, Germany
- Finnish Meteorological Institute, Helsinki, Finland
| | - Amy R Macfarlane
- WSL Snow and Avalanche Research Institute SLF, Davos, Switzerland
| | - Ilkka S O Matero
- Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, 27570, Germany
- Svalbard Integrated Arctic Earth Observing System Knowledge Centre, Longyearbyen, Norway
| | - Marc Oggier
- International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, AK, USA
| | | | - David N Wagner
- WSL Snow and Avalanche Research Institute SLF, Davos, Switzerland
- CRYOS, School of Architecture, Civil and Environmental Engineering, EPFL, Lausanne, Switzerland
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39
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Uz M, Akyılmaz O, Shum CK, Atman KG, Olgun S, Güneş Ö. High-resolution temporal gravity field data products: Monthly mass grids and spherical harmonics from 1994 to 2021. Sci Data 2024; 11:71. [PMID: 38218975 PMCID: PMC10787793 DOI: 10.1038/s41597-023-02887-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 12/27/2023] [Indexed: 01/15/2024] Open
Abstract
Since April 2002, Gravity Recovery and Climate Experiment (GRACE) and GRACE-FO (FollowOn) satellite gravimetry missions have provided precious data for monitoring mass variations within the hydrosphere, cryosphere, and oceans with unprecedented accuracy and resolution. However, the long-term products of mass variations prior to GRACE-era may allow for a better understanding of spatio-temporal changes in climate-induced geophysical phenomena, e.g., terrestrial water cycle, ice sheet and glacier mass balance, sea level change and ocean bottom pressure (OBP). Here, climate-driven mass anomalies are simulated globally at 1.0° × 1.0° spatial and monthly temporal resolutions from January 1994 to January 2021 using an in-house developed hybrid Deep Learning architecture considering GRACE/-FO mascon and SLR-inferred gravimetry, ECMWF Reanalysis-5 data, and normalized time tag information as training datasets. Internally, we consider mathematical metrics such as RMSE, NSE and comparisons to previous studies, and externally, we compare our simulations to GRACE-independent datasets such as El-Nino and La-Nina indexes, Global Mean Sea Level, Earth Orientation Parameters-derived low-degree spherical harmonic coefficients, and in-situ OBP measurements for validation.
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Affiliation(s)
- Metehan Uz
- Dept. of Geomatics Eng., Istanbul Technical University, Istanbul, Turkey
| | - Orhan Akyılmaz
- Dept. of Geomatics Eng., Istanbul Technical University, Istanbul, Turkey.
| | - C K Shum
- Division of Geodetic Science, School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Kazım Gökhan Atman
- School of Mathematical Sciences, Queen Mary University of London, London, England
- Department of Physics, Ege University, Izmir, Turkey
| | - Sevda Olgun
- Dept. of Geomatics Eng., Kocaeli University, Kocaeli, Turkey
| | - Özge Güneş
- Dept. of Geomatics Eng., Yıldız Technical University, Istanbul, Turkey
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Zhu X, Deng Y, Liu Y. Methylocystis dominates methane oxidation in glacier foreland soil at elevated temperature. FEMS Microbiol Lett 2024; 371:fnae011. [PMID: 38366911 DOI: 10.1093/femsle/fnae011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/01/2023] [Accepted: 02/15/2024] [Indexed: 02/19/2024] Open
Abstract
Methane-oxidizing bacteria (methanotrophs) play an important role in mitigating methane emissions in various ecological environments, including cold regions. However, the response of methanotrophs in these cold environments to extreme temperatures above the in-situ temperature has not been thoroughly explored. Therefore, this study collected soil samples from Longxiazailongba (LXZ) and Qiangyong (QY) glacier forelands and incubated them with 13CH4 at 35°C under different soil water conditions. The active methanotroph populations were identified using DNA stable isotope probing (DNA-SIP) and high throughput sequencing techniques. The results showed that the methane oxidation potential in LXZ and QY glacier foreland soils was significantly enhanced at an unusually high temperature of 35°C during microcosm incubations, where abundant substrate (methane and oxygen) was provided. Moreover, the influence of soil water conditions on this potential was observed. Interestingly, Methylocystis, a type II and mesophilic methanotroph, was detected in the unincubated in-situ soil samples and became the active and dominant methanotroph in methane oxidation at 35°C. This suggests that Methylocystis can survive at low temperatures for a prolonged period and thrive under suitable growth conditions. Furthermore, the presence of mesophilic methanotrophs in cold habitats could have potential implications for reducing greenhouse gas emissions in warming glacial environments.
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Affiliation(s)
- Xinshu Zhu
- Center for the Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yongcui Deng
- School of Geography, Nanjing Normal University, Nanjing 210023, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China
| | - Yongqin Liu
- Center for the Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
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Zepernick BN, Chase EE, Denison ER, Gilbert NE, Truchon AR, Frenken T, Cody WR, Martin RM, Chaffin JD, Bullerjahn GS, McKay RML, Wilhelm SW. Declines in ice cover are accompanied by light limitation responses and community change in freshwater diatoms. ISME J 2024; 18:wrad015. [PMID: 38366077 PMCID: PMC10939406 DOI: 10.1093/ismejo/wrad015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 02/18/2024]
Abstract
The rediscovery of diatom blooms embedded within and beneath the Lake Erie ice cover (2007-2012) ignited interest in psychrophilic adaptations and winter limnology. Subsequent studies determined the vital role ice plays in winter diatom ecophysiology as diatoms partition to the underside of ice, thereby fixing their location within the photic zone. Yet, climate change has led to widespread ice decline across the Great Lakes, with Lake Erie presenting a nearly "ice-free" state in several recent winters. It has been hypothesized that the resultant turbid, isothermal water column induces light limitation amongst winter diatoms and thus serves as a competitive disadvantage. To investigate this hypothesis, we conducted a physiochemical and metatranscriptomic survey that spanned spatial, temporal, and climatic gradients of the winter Lake Erie water column (2019-2020). Our results suggest that ice-free conditions decreased planktonic diatom bloom magnitude and altered diatom community composition. Diatoms increased their expression of various photosynthetic genes and iron transporters, which suggests that the diatoms are attempting to increase their quantity of photosystems and light-harvesting components (a well-defined indicator of light limitation). We identified two gene families which serve to increase diatom fitness in the turbid ice-free water column: proton-pumping rhodopsins (a potential second means of light-driven energy acquisition) and fasciclins (a means to "raft" together to increase buoyancy and co-locate to the surface to optimize light acquisition). With large-scale climatic changes already underway, our observations provide insight into how diatoms respond to the dynamic ice conditions of today and shed light on how they will fare in a climatically altered tomorrow.
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Affiliation(s)
- Brittany N Zepernick
- Department of Microbiology, The University of Tennessee, Knoxville, TN 37996, United States
| | - Emily E Chase
- Department of Microbiology, The University of Tennessee, Knoxville, TN 37996, United States
| | - Elizabeth R Denison
- Department of Microbiology, The University of Tennessee, Knoxville, TN 37996, United States
| | - Naomi E Gilbert
- Department of Microbiology, The University of Tennessee, Knoxville, TN 37996, United States
- Lawrence Livermore National Laboratory, Livermore, CA 94550, United States
| | - Alexander R Truchon
- Department of Microbiology, The University of Tennessee, Knoxville, TN 37996, United States
| | - Thijs Frenken
- HAS University of Applied Sciences, 5223 DE ‘s-Hertogenbosch, The Netherlands
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, N9C 1A2, Canada
| | - William R Cody
- Aquatic Taxonomy Specialists, Malinta, OH 43535, United States
| | - Robbie M Martin
- Department of Microbiology, The University of Tennessee, Knoxville, TN 37996, United States
| | - Justin D Chaffin
- Stone Laboratory and Ohio Sea Grant, The Ohio State University, Put-In-Bay, OH 43456, United States
| | - George S Bullerjahn
- Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, United States
| | - R Michael L McKay
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, N9C 1A2, Canada
| | - Steven W Wilhelm
- Department of Microbiology, The University of Tennessee, Knoxville, TN 37996, United States
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42
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Witze A. Scientists drilled through 500 metres of Greenland's ice - here's what they found at the bottom. Nature 2024; 625:18. [PMID: 38097798 DOI: 10.1038/d41586-023-04002-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
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Guerrieri A, Cantera I, Marta S, Bonin A, Carteron A, Ambrosini R, Caccianiga M, Anthelme F, Azzoni RS, Almond P, Alviz Gazitúa P, Cauvy-Fraunié S, Ceballos Lievano JL, Chand P, Chand Sharma M, Clague J, Cochachín Rapre JA, Compostella C, Cruz Encarnación R, Dangles O, Deline P, Eger A, Erokhin S, Franzetti A, Gielly L, Gili F, Gobbi M, Hågvar S, Khedim N, Meneses RI, Peyre G, Pittino F, Proietto A, Rabatel A, Urseitova N, Yang Y, Zaginaev V, Zerboni A, Zimmer A, Taberlet P, Diolaiuti GA, Poulenard J, Fontaneto D, Thuiller W, Ficetola GF. Local climate modulates the development of soil nematode communities after glacier retreat. Glob Chang Biol 2024; 30:e17057. [PMID: 38273541 DOI: 10.1111/gcb.17057] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 10/10/2023] [Indexed: 01/27/2024]
Abstract
The worldwide retreat of glaciers is causing a faster than ever increase in ice-free areas that are leading to the emergence of new ecosystems. Understanding the dynamics of these environments is critical to predicting the consequences of climate change on mountains and at high latitudes. Climatic differences between regions of the world could modulate the emergence of biodiversity and functionality after glacier retreat, yet global tests of this hypothesis are lacking. Nematodes are the most abundant soil animals, with keystone roles in ecosystem functioning, but the lack of global-scale studies limits our understanding of how the taxonomic and functional diversity of nematodes changes during the colonization of proglacial landscapes. We used environmental DNA metabarcoding to characterize nematode communities of 48 glacier forelands from five continents. We assessed how different facets of biodiversity change with the age of deglaciated terrains and tested the hypothesis that colonization patterns are different across forelands with different climatic conditions. Nematodes colonized ice-free areas almost immediately. Both taxonomic and functional richness quickly increased over time, but the increase in nematode diversity was modulated by climate, so that colonization started earlier in forelands with mild summer temperatures. Colder forelands initially hosted poor communities, but the colonization rate then accelerated, eventually leveling biodiversity differences between climatic regimes in the long term. Immediately after glacier retreat, communities were dominated by colonizer taxa with short generation time and r-ecological strategy but community composition shifted through time, with increased frequency of more persister taxa with K-ecological strategy. These changes mostly occurred through the addition of new traits instead of their replacement during succession. The effects of local climate on nematode colonization led to heterogeneous but predictable patterns around the world that likely affect soil communities and overall ecosystem development.
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Affiliation(s)
- Alessia Guerrieri
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Argaly, Bâtiment CleanSpace, Sainte-Hélène-du-Lac, France
| | - Isabel Cantera
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
| | - Silvio Marta
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Institute of Geosciences and Earth Resources, CNR, Pisa, Italy
| | - Aurélie Bonin
- Argaly, Bâtiment CleanSpace, Sainte-Hélène-du-Lac, France
| | - Alexis Carteron
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
| | - Roberto Ambrosini
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
| | - Marco Caccianiga
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | - Fabien Anthelme
- Laboratory AMAP, IRD, University of Montpellier, CIRAD, CNRS, INRA, Montpellier, France
| | - Roberto Sergio Azzoni
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano, Milano, Italy
| | - Peter Almond
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, New Zealand
| | - Pablo Alviz Gazitúa
- Departamento de Ciencias Biológicas y Biodiversidad, Universidad de Los Lagos, Osorno, Chile
| | | | | | - Pritam Chand
- Department of Geography, School of Environment and Earth Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Milap Chand Sharma
- Centre for the Study of Regional Development - School of Social Sciences, Jawaharlal Nehru University, New Delhi, India
| | - John Clague
- Department of Earth Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | | | - Chiara Compostella
- Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano, Milano, Italy
| | | | - Olivier Dangles
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Philip Deline
- Univ. Savoie Mont Blanc, Univ. Grenoble Alpes, EDYTEM, Chambéry, France
| | - Andre Eger
- Mannaki Whenua - Landcare Research, Soils and Landscapes, Lincoln, New Zealand
| | - Sergey Erokhin
- Institute of Water Problems and Hydro-Energy, Kyrgyz National Academy of Sciences, Bishkek, Kyrgyzstan
| | - Andrea Franzetti
- Department of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, Milano, Italy
| | - Ludovic Gielly
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
| | - Fabrizio Gili
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Mauro Gobbi
- Research and Museum Collections Office, Climate and Ecology Unit, MUSE-Science Museum, Corso del Lavoro e della Scienza, Trento, Italy
| | - Sigmund Hågvar
- Faculty of Environmental Sciences and Natural Resource Management (INA), Norwegian University of Life Sciences, Ås, Norway
- UiT - The Arctic University of Norway, Tromsø Museum, Tromsø, Norway
| | - Norine Khedim
- Univ. Savoie Mont Blanc, Univ. Grenoble Alpes, EDYTEM, Chambéry, France
| | - Rosa Isela Meneses
- Herbario Nacional de Bolivia: La Paz, La Paz, Bolivia
- Universidad Católica del Norte, Antofagasta, Chile
| | - Gwendolyn Peyre
- Department of Civil and Environmental Engineering, University of the Andes, Bogotá, Colombia
| | - Francesca Pittino
- Department of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, Milano, Italy
| | - Angela Proietto
- Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano, Milano, Italy
| | - Antoine Rabatel
- Univ. Grenoble Alpes, CNRS, IRD, Grenoble-INP, Institut des Géosciences de l'Environnement (IGE, UMR 5001), Grenoble, France
| | - Nurai Urseitova
- Institute of Water Problems and Hydro-Energy, Kyrgyz National Academy of Sciences, Bishkek, Kyrgyzstan
| | - Yan Yang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
| | - Vitalii Zaginaev
- Mountain Societies Research Institute, University of Central Asia, Bishkek, Kyrgyzstan
| | - Andrea Zerboni
- Dipartimento di Scienze della Terra "Ardito Desio", Università degli Studi di Milano, Milano, Italy
| | - Anaïs Zimmer
- Department of Geography and the Environment, University of Texas at Austin, Austin, Texas, USA
| | - Pierre Taberlet
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
- UiT - The Arctic University of Norway, Tromsø Museum, Tromsø, Norway
| | | | - Jerome Poulenard
- Univ. Savoie Mont Blanc, Univ. Grenoble Alpes, EDYTEM, Chambéry, France
| | - Diego Fontaneto
- CNR - Water Research Institute, Verbania, Italy
- NBFC - National Biodiversity Future Center, Palermo, Italy
| | - Wilfried Thuiller
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
| | - Gentile Francesco Ficetola
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, Grenoble, France
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Schmidt K, Graeve M, Hoppe CJM, Torres-Valdes S, Welteke N, Whitmore LM, Anhaus P, Atkinson A, Belt ST, Brenneis T, Campbell RG, Castellani G, Copeman LA, Flores H, Fong AA, Hildebrandt N, Kohlbach D, Nielsen JM, Parrish CC, Rad-Menéndez C, Rokitta SD, Tippenhauer S, Zhuang Y. Essential omega-3 fatty acids are depleted in sea ice and pelagic algae of the Central Arctic Ocean. Glob Chang Biol 2024; 30:e17090. [PMID: 38273483 DOI: 10.1111/gcb.17090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/04/2023] [Accepted: 11/14/2023] [Indexed: 01/27/2024]
Abstract
Microalgae are the main source of the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), essential for the healthy development of most marine and terrestrial fauna including humans. Inverse correlations of algal EPA and DHA proportions (% of total fatty acids) with temperature have led to suggestions of a warming-induced decline in the global production of these biomolecules and an enhanced importance of high latitude organisms for their provision. The cold Arctic Ocean is a potential hotspot of EPA and DHA production, but consequences of global warming are unknown. Here, we combine a full-seasonal EPA and DHA dataset from the Central Arctic Ocean (CAO), with results from 13 previous field studies and 32 cultured algal strains to examine five potential climate change effects; ice algae loss, community shifts, increase in light, nutrients, and temperature. The algal EPA and DHA proportions were lower in the ice-covered CAO than in warmer peripheral shelf seas, which indicates that the paradigm of an inverse correlation of EPA and DHA proportions with temperature may not hold in the Arctic. We found no systematic differences in the summed EPA and DHA proportions of sea ice versus pelagic algae, and in diatoms versus non-diatoms. Overall, the algal EPA and DHA proportions varied up to four-fold seasonally and 10-fold regionally, pointing to strong light and nutrient limitations in the CAO. Where these limitations ease in a warming Arctic, EPA and DHA proportions are likely to increase alongside increasing primary production, with nutritional benefits for a non-ice-associated food web.
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Affiliation(s)
- Katrin Schmidt
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, UK
| | - Martin Graeve
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Clara J M Hoppe
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Sinhué Torres-Valdes
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Nahid Welteke
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Laura M Whitmore
- International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, Alaska, USA
| | - Philipp Anhaus
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | | | - Simon T Belt
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, UK
| | - Tina Brenneis
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Robert G Campbell
- Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island, USA
| | - Giulia Castellani
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Louise A Copeman
- NOAA Alaska Fisheries Science Center, Hatfield Marine Science Center, Newport, Oregon, USA
| | - Hauke Flores
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Allison A Fong
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Nicole Hildebrandt
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Doreen Kohlbach
- Norwegian Polar Institute, Fram Centre, Tromsø, Norway
- Department of Arctic and Marine Biology, The Arctic University of Tromsø, Tromsø, Norway
| | - Jens M Nielsen
- Cooperative Institute for Climate, Ocean, and Ecosystem Studies, University of Washington, Seattle, Washington, USA
- NOAA Alaska Fisheries Science Center, Seattle, Washington, USA
| | - Christopher C Parrish
- Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, Newfoundland, Canada
| | - Cecilia Rad-Menéndez
- Culture Collection of Algae and Protozoa, Scottish Association for Marine Science, Oban, UK
| | - Sebastian D Rokitta
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Sandra Tippenhauer
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Yanpei Zhuang
- Polar and Marine Research Institute, Jimei University, Xiamen, China
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45
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Buda J, Łokas E, Błażej S, Gorzkiewicz K, Buda K, Ambrosini R, Franzetti A, Pittino F, Crosta A, Klimaszyk P, Zawierucha K. Unveiling threats to glacier biota: Bioaccumulation, mobility, and interactions of radioisotopes with key biological components. Chemosphere 2024; 348:140738. [PMID: 37979801 DOI: 10.1016/j.chemosphere.2023.140738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 11/20/2023]
Abstract
Contemporary melting glaciers are considered a secondary source of pollutants including radionuclides. Cryoconite - biogenic sediment on the glacier surface - exhibits high concentrations of natural and anthrophogenic radioisotopes. Understanding the interactions between radioisotopes and organisms is essential for evaluating their potential impact on glacier-related ecosystems. Using a multidimensional approach and intensive sampling (17 glaciers), we investigated the relationships between activity concentrations of 137Cs and 210Pb and various biotic components of cryoconite such as the amount of organic matter, chlorophyll concentration, the ratio of cyanobacteria to all bacteria, and size of cryoconite granules. Additionally, to better understand the bioavailability and fate of radioisotopes in this ecosystem, we measured the uptake ratio of 137Cs, 210Pb, 238Pu, and 239+240Pu in the top consumers, and examined the mobility of radioisotopes by measuring 137Cs and 210Pb activity concentrations after a parallel extraction using media with different specific ion exchange capacities. The activity concentrations of both 137Cs and 210Pb showed a large variability reaching 5.8 kBq kg-1 and 7.2 kBq kg-1, respectively. Their activity concentrations were positively related to the amount of organic matter, however, the 210Pb also increased with the chlorophyll concentration. This might be due to the difference in the deposition of both elements: lead, being deposited constantly, binds also to currently developing communities, while caesium deposition peaked in the 1960s. The mobility analysis revealed that the loosely bound fraction of 210Pb was more strongly related to organic-metallic complexes than 137Cs. Firmly bound radioisotope fractions (anhydrous interlayer sites of minerals) were three times higher for 137Cs than for 210Pb. The median uptake ratios of radioisotopes were determined as 0.07-0.111 for 137Cs, 0.177 for 210Pb, 0.07 for 239+240Pu. Our findings emphasize the importance of organisms in the accumulation of radioisotopes on glaciers and suggest an impact of radionuclides on glacier organisms.
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Affiliation(s)
- Jakub Buda
- Department of Animal Taxonomy and Ecology, Adam Mickiewicz University in Poznań, Poland.
| | - Edyta Łokas
- Department of Mass Spectrometry, The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Poland
| | - Sylwia Błażej
- Department of Nuclear Physical Chemistry, The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Poland
| | - Krzysztof Gorzkiewicz
- Department of Nuclear Physical Chemistry, The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Poland
| | - Kinga Buda
- Deparment of Behavioural Ecology, Adam Mickiewicz University in Poznań, Poland
| | - Roberto Ambrosini
- Department of Environmental Science and Policy, University of Milan, Italy
| | - Andrea Franzetti
- Department of Earth and Environmental Sciences (DISAT), Università Degli Studi di Milano-Bicocca, Italy
| | - Francesca Pittino
- Department of Earth and Environmental Sciences (DISAT), Università Degli Studi di Milano-Bicocca, Italy
| | - Arianna Crosta
- Department of Environmental Science and Policy, University of Milan, Italy
| | - Piotr Klimaszyk
- Department of Water Protection, Adam Mickiewicz University in Poznań, Poland
| | - Krzysztof Zawierucha
- Department of Animal Taxonomy and Ecology, Adam Mickiewicz University in Poznań, Poland
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46
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Allentoft ME, Sikora M, Refoyo-Martínez A, Irving-Pease EK, Fischer A, Barrie W, Ingason A, Stenderup J, Sjögren KG, Pearson A, Sousa da Mota B, Schulz Paulsson B, Halgren A, Macleod R, Jørkov MLS, Demeter F, Sørensen L, Nielsen PO, Henriksen RA, Vimala T, McColl H, Margaryan A, Ilardo M, Vaughn A, Fischer Mortensen M, Nielsen AB, Ulfeldt Hede M, Johannsen NN, Rasmussen P, Vinner L, Renaud G, Stern A, Jensen TZT, Scorrano G, Schroeder H, Lysdahl P, Ramsøe AD, Skorobogatov A, Schork AJ, Rosengren A, Ruter A, Outram A, Timoshenko AA, Buzhilova A, Coppa A, Zubova A, Silva AM, Hansen AJ, Gromov A, Logvin A, Gotfredsen AB, Henning Nielsen B, González-Rabanal B, Lalueza-Fox C, McKenzie CJ, Gaunitz C, Blasco C, Liesau C, Martinez-Labarga C, Pozdnyakov DV, Cuenca-Solana D, Lordkipanidze DO, En'shin D, Salazar-García DC, Price TD, Borić D, Kostyleva E, Veselovskaya EV, Usmanova ER, Cappellini E, Brinch Petersen E, Kannegaard E, Radina F, Eylem Yediay F, Duday H, Gutiérrez-Zugasti I, Merts I, Potekhina I, Shevnina I, Altinkaya I, Guilaine J, Hansen J, Aura Tortosa JE, Zilhão J, Vega J, Buck Pedersen K, Tunia K, Zhao L, Mylnikova LN, Larsson L, Metz L, Yepiskoposyan L, Pedersen L, Sarti L, Orlando L, Slimak L, Klassen L, Blank M, González-Morales M, Silvestrini M, Vretemark M, Nesterova MS, Rykun M, Rolfo MF, Szmyt M, Przybyła M, Calattini M, Sablin M, Dobisíková M, Meldgaard M, Johansen M, Berezina N, Card N, Saveliev NA, Poshekhonova O, Rickards O, Lozovskaya OV, Gábor O, Uldum OC, Aurino P, Kosintsev P, Courtaud P, Ríos P, Mortensen P, Lotz P, Persson P, Bangsgaard P, de Barros Damgaard P, Vang Petersen P, Martinez PP, Włodarczak P, Smolyaninov RV, Maring R, Menduiña R, Badalyan R, Iversen R, Turin R, Vasilyev S, Wåhlin S, Borutskaya S, Skochina S, Sørensen SA, Andersen SH, Jørgensen T, Serikov YB, Molodin VI, Smrcka V, Merts V, Appadurai V, Moiseyev V, Magnusson Y, Kjær KH, Lynnerup N, Lawson DJ, Sudmant PH, Rasmussen S, Korneliussen TS, Durbin R, Nielsen R, Delaneau O, Werge T, Racimo F, Kristiansen K, Willerslev E. Population genomics of post-glacial western Eurasia. Nature 2024; 625:301-311. [PMID: 38200295 PMCID: PMC10781627 DOI: 10.1038/s41586-023-06865-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 11/14/2023] [Indexed: 01/12/2024]
Abstract
Western Eurasia witnessed several large-scale human migrations during the Holocene1-5. Here, to investigate the cross-continental effects of these migrations, we shotgun-sequenced 317 genomes-mainly from the Mesolithic and Neolithic periods-from across northern and western Eurasia. These were imputed alongside published data to obtain diploid genotypes from more than 1,600 ancient humans. Our analyses revealed a 'great divide' genomic boundary extending from the Black Sea to the Baltic. Mesolithic hunter-gatherers were highly genetically differentiated east and west of this zone, and the effect of the neolithization was equally disparate. Large-scale ancestry shifts occurred in the west as farming was introduced, including near-total replacement of hunter-gatherers in many areas, whereas no substantial ancestry shifts happened east of the zone during the same period. Similarly, relatedness decreased in the west from the Neolithic transition onwards, whereas, east of the Urals, relatedness remained high until around 4,000 BP, consistent with the persistence of localized groups of hunter-gatherers. The boundary dissolved when Yamnaya-related ancestry spread across western Eurasia around 5,000 BP, resulting in a second major turnover that reached most parts of Europe within a 1,000-year span. The genetic origin and fate of the Yamnaya have remained elusive, but we show that hunter-gatherers from the Middle Don region contributed ancestry to them. Yamnaya groups later admixed with individuals associated with the Globular Amphora culture before expanding into Europe. Similar turnovers occurred in western Siberia, where we report new genomic data from a 'Neolithic steppe' cline spanning the Siberian forest steppe to Lake Baikal. These prehistoric migrations had profound and lasting effects on the genetic diversity of Eurasian populations.
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Affiliation(s)
- Morten E Allentoft
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark.
- Trace and Environmental DNA (TrEnD) Laboratory, School of Molecular and Life Sciences, Curtin University, Perth, Western Australia, Australia.
| | - Martin Sikora
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark.
| | - Alba Refoyo-Martínez
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Evan K Irving-Pease
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Anders Fischer
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
- Department of Historical Studies, University of Gothenburg, Gothenburg, Sweden
- Sealand Archaeology, Kalundborg, Denmark
| | - William Barrie
- GeoGenetics Group, Department of Zoology, University of Cambridge, Cambridge, UK
- Department of Genetics, University of Cambridge, Cambridge, UK
| | - Andrés Ingason
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
- Institute of Biological Psychiatry, Mental Health Services, Copenhagen University Hospital, Roskilde, Denmark
| | - Jesper Stenderup
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Karl-Göran Sjögren
- Department of Historical Studies, University of Gothenburg, Gothenburg, Sweden
| | - Alice Pearson
- Department of Genetics, University of Cambridge, Cambridge, UK
| | - Bárbara Sousa da Mota
- Department of Computational Biology, University of Lausanne, Lausanne, Switzerland
- Swiss Institute of Bioinformatics, University of Lausanne, Lausanne, Switzerland
| | | | - Alma Halgren
- Department of Integrative Biology, University of California, Berkeley, CA, USA
| | - Ruairidh Macleod
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
- GeoGenetics Group, Department of Zoology, University of Cambridge, Cambridge, UK
- Research Department of Genetics, Evolution and Environment, University College London, London, UK
- Department of Archaeology, University of Cambridge, Cambridge, UK
| | | | - Fabrice Demeter
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
- Muséum National d'Histoire Naturelle, CNRS, Université de Paris, Musée de l'Homme, Paris, France
| | | | | | - Rasmus A Henriksen
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Tharsika Vimala
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Hugh McColl
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Ashot Margaryan
- Section for Evolutionary Genomics, Globe Institute, University of Copenhagen, Copenhagen, Denmark
- Centre for Evolutionary Hologenomics, University of Copenhagen, Copenhagen, Denmark
| | - Melissa Ilardo
- Anthropology Department, University of Utah, Salt Lake City, UT, USA
| | - Andrew Vaughn
- Center for Computational Biology, University of California, Berkeley, CA, USA
| | | | | | | | | | | | - Lasse Vinner
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Gabriel Renaud
- Department of Health Technology, Section of Bioinformatics, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Aaron Stern
- Center for Computational Biology, University of California, Berkeley, CA, USA
| | | | - Gabriele Scorrano
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Hannes Schroeder
- Section for Evolutionary Genomics, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Per Lysdahl
- Vendsyssel Historiske Museum, Hjørring, Denmark
| | - Abigail Daisy Ramsøe
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | | | - Andrew Joseph Schork
- Department of Genetics, University of Cambridge, Cambridge, UK
- Neurogenomics Division, The Translational Genomics Research Institute (TGEN), Phoenix, AZ, USA
| | - Anders Rosengren
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
- Department of Genetics, University of Cambridge, Cambridge, UK
| | - Anthony Ruter
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Alan Outram
- Department of Archaeology, University of Exeter, Exeter, UK
| | - Aleksey A Timoshenko
- Institute of Archeology and Ethnography, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Alexandra Buzhilova
- Department of Anthropology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Alfredo Coppa
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Alisa Zubova
- Peter the Great Museum of Anthropology and Ethnography (Kunstkamera), Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | - Ana Maria Silva
- CIAS, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
- UNIARQ, University of Lisbon, Lisbon, Portugal
| | - Anders J Hansen
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Andrey Gromov
- Peter the Great Museum of Anthropology and Ethnography (Kunstkamera), Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | - Andrey Logvin
- Kostanay Regional University A. Baitursynov, Kostanay, Kazakhstan
| | - Anne Birgitte Gotfredsen
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | | | - Borja González-Rabanal
- Grupo EvoAdapta, Departamento de Ciencias Históricas, Universidad de Cantabria, Santander, Spain
| | - Carles Lalueza-Fox
- Institute of Evolutionary Biology, CSIC-Universitat Pompeu Fabra, Barcelona, Spain
- Natural Sciences Museum of Barcelona (MCNB), Barcelona, Spain
| | | | - Charleen Gaunitz
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Concepción Blasco
- Departamento de Prehistoria y Arqueología, Universidad Autónoma de Madrid, Madrid, Spain
| | - Corina Liesau
- Departamento de Prehistoria y Arqueología, Universidad Autónoma de Madrid, Madrid, Spain
| | | | - Dmitri V Pozdnyakov
- Institute of Archeology and Ethnography, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - David Cuenca-Solana
- Instituto Internacional de Investigaciones Prehistóricas de Cantabria, Universidad de Cantabria, Banco Santander, Gobierno de Cantabria, Santander, Spain
- Centre de Recherche en Archéologie, Archeosciences, Histoire (CReAAH), UMR-6869 CNRS, Rennes, France
| | - David O Lordkipanidze
- Georgian National Museum, Tbilisi, Georgia
- Tbilisi State University, Tbilisi, Georgia
| | - Dmitri En'shin
- IPND, Tyumen Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Tyumen, Russian Federation
| | - Domingo C Salazar-García
- Departament de Prehistòria, Arqueologia i Història Antiga, Universitat de València, València, Spain
- Department of Geological Sciences, University of Cape Town, Cape Town, South Africa
| | - T Douglas Price
- Department of Historical Studies, University of Gothenburg, Gothenburg, Sweden
- Laboratory for Archaeological Chemistry, Department of Anthropology, University of Wisconsin-Madison, Madison, WI, USA
| | - Dušan Borić
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
- Department of Anthropology, New York University, New York, NY, USA
| | - Elena Kostyleva
- Institute of Humanities, Ivanovo State University, Ivanovo, Russian Federation
| | - Elizaveta V Veselovskaya
- Institute of Ethnology and Anthropology, Russian Academy of Sciences, Moscow, Russian Federation
| | - Emma R Usmanova
- Saryarka Archaeological Institute, Buketov Karaganda University, Karaganda, Kazakhstan
- South Ural State University, Chelyabinsk, Russia
- A. Kh. Khalikov Institute of Archeology of the Academy of Sciences of the Republic of Tatarstan, Kazan, Russia
- Margulan Institute of Archaeology, Committee of Science of the Ministry of Science and Higher Education of the Republic of Kazakhstan, Almaty, Kazakhstan
| | - Enrico Cappellini
- Section for Evolutionary Genomics, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | | | | | - Francesca Radina
- Soprintendenza Archeologia Belle Arti e Paesaggio per la Città Metropolitana di Bari, Bari, Italy
| | - Fulya Eylem Yediay
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Henri Duday
- UMR 5199 PACEA, CNRS, Université de Bordeaux, Pessac, France
| | - Igor Gutiérrez-Zugasti
- Instituto Internacional de Investigaciones Prehistóricas de Cantabria, Universidad de Cantabria, Banco Santander, Gobierno de Cantabria, Santander, Spain
| | - Ilya Merts
- A.Kh. Margulan Institute of Archaeology, Almaty, Kazakhstan
| | - Inna Potekhina
- Institute of Archaeology, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- National University of Kyiv-Mohyla Academy, Kyiv, Ukraine
| | - Irina Shevnina
- Kostanay Regional University A. Baitursynov, Kostanay, Kazakhstan
| | - Isin Altinkaya
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | | | | | - Joan Emili Aura Tortosa
- Departament de Prehistòria, Arqueologia i Història Antiga, Universitat de València, València, Spain
| | - João Zilhão
- UNIARQ, University of Lisbon, Lisbon, Portugal
- ICREA, University of Barcelona, Barcelona, Spain
| | | | | | - Krzysztof Tunia
- Institute of Archaeology and Ethnology, Polish Academy of Sciences, Kraków, Poland
| | - Lei Zhao
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Liudmila N Mylnikova
- Institute of Archeology and Ethnography, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Lars Larsson
- Department of Archaeology and Ancient History, Lund University, Lund, Sweden
| | - Laure Metz
- Aix-Marseille Université, CNRS, Min. Culture, UMR 7269, LAMPEA, Maison Méditerranéenne des Sciences de l'Homme, Aix-en-Provence, France
| | - Levon Yepiskoposyan
- Institute of Molecular Biology, National Academy of Sciences, Yerevan, Armenia
- Russian-Armenian University, Yerevan, Armenia
| | | | - Lucia Sarti
- Department of History and Cultural Heritage, University of Siena, Siena, Italy
| | - Ludovic Orlando
- Centre d'Anthropobiologie et de Génomique de Toulouse, CNRS UMR 5500, Université Paul Sabatier, Toulouse, France
| | - Ludovic Slimak
- Centre d'Anthropobiologie et de Génomique de Toulouse, CNRS UMR 5500, Université Paul Sabatier, Toulouse, France
| | | | - Malou Blank
- Department of Historical Studies, University of Gothenburg, Gothenburg, Sweden
| | - Manuel González-Morales
- Instituto Internacional de Investigaciones Prehistóricas de Cantabria, Universidad de Cantabria, Banco Santander, Gobierno de Cantabria, Santander, Spain
| | - Mara Silvestrini
- Soprintendenza per i Beni Archeologici delle Marche, Ancona, Italy
| | | | - Marina S Nesterova
- Institute of Archeology and Ethnography, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Marina Rykun
- Cabinet of Anthropology, Tomsk State University, Tomsk, Russian Federation
| | - Mario Federico Rolfo
- Department of History, Humanities and Society, University of Rome Tor Vergata, Rome, Italy
| | - Marzena Szmyt
- Faculty of Archaeology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Marcin Przybyła
- Institute of Archaeology, Jagiellonian University, Kraków, Poland
| | - Mauro Calattini
- Department of History and Cultural Heritage, University of Siena, Siena, Italy
| | - Mikhail Sablin
- Zoological Institute of Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | - Miluše Dobisíková
- Department of Anthropology, Czech National Museum, Prague, Czech Republic
| | - Morten Meldgaard
- Department of Health and Nature, University of Greenland, Nuuk, Greenland
| | | | - Natalia Berezina
- Department of Anthropology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Nick Card
- Archaeology Institute, University of Highlands and Islands, Orkney, UK
| | - Nikolai A Saveliev
- Scientific Research Center "Baikal region", Irkutsk State University, Irkutsk, Russian Federation
| | - Olga Poshekhonova
- IPND, Tyumen Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Tyumen, Russian Federation
| | - Olga Rickards
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Olga V Lozovskaya
- Laboratory for Experimental Traceology, Institute for the History of Material Culture of the Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | | | | | - Paola Aurino
- Soprintendenza Archeologia, Belle Arti e Paesaggio per la provincia di Cosenza, Cosenza, Italy
| | - Pavel Kosintsev
- Paleoecology Laboratory, Institute of Plant and Animal Ecology, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russian Federation
- Department of History of the Institute of Humanities, Ural Federal University, Ekaterinburg, Russian Federation
| | | | - Patricia Ríos
- Departamento de Prehistoria y Arqueología, Universidad Autónoma de Madrid, Madrid, Spain
| | - Peder Mortensen
- Centre for the Study of Early Agricultural Societies, Department of Cross-Cultural and Regional Studies, University of Copenhagen, Copenhagen, Denmark
| | - Per Lotz
- Museum Nordsjælland, Hillerød, Denmark
- Museum Vestsjælland, Holbæk, Denmark
| | - Per Persson
- Museum of Cultural History, University of Oslo, Oslo, Norway
| | - Pernille Bangsgaard
- ArchaeoScience, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Peter de Barros Damgaard
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | | | - Pilar Prieto Martinez
- Department of History, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Piotr Włodarczak
- Institute of Archaeology and Ethnology, Polish Academy of Sciences, Kraków, Poland
| | - Roman V Smolyaninov
- Lipetsk Regional Scientific Public Organisation "Archaeological Research", Lipetsk, Russian Federation
| | - Rikke Maring
- Department of Health Technology, Section of Bioinformatics, Technical University of Denmark, Kongens Lyngby, Denmark
- Museum Østjylland, Randers, Denmark
| | | | - Ruben Badalyan
- Institute of Archaeology and Ethnography, National Academy of Sciences, Yerevan, Armenia
| | - Rune Iversen
- The Saxo Institute, University of Copenhagen, Copenhagen, Denmark
| | | | - Sergey Vasilyev
- Institute of Ethnology and Anthropology, Russian Academy of Sciences, Moscow, Russian Federation
- Center for Egyptological Studies, Russian Academy of Sciences, Moscow, Russian Federation
| | | | - Svetlana Borutskaya
- Department of Anthropology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Svetlana Skochina
- IPND, Tyumen Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Tyumen, Russian Federation
| | | | | | | | - Yuri B Serikov
- Nizhny Tagil State Socio-Pedagogical Institute, Nizhny Tagil, Russia
| | - Vyacheslav I Molodin
- Institute of Archeology and Ethnography, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Vaclav Smrcka
- Institute for History of Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Victor Merts
- Centre for Archaeological Research, Toraighyrov University, Pavlodar, Kazakhstan
| | - Vivek Appadurai
- Department of Genetics, University of Cambridge, Cambridge, UK
| | - Vyacheslav Moiseyev
- Peter the Great Museum of Anthropology and Ethnography (Kunstkamera), Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | | | - Kurt H Kjær
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Niels Lynnerup
- Laboratory of Biological Anthropology, Department of Forensic Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Daniel J Lawson
- Institute of Statistical Sciences, School of Mathematics, University of Bristol, Bristol, UK
| | - Peter H Sudmant
- Department of Integrative Biology, University of California, Berkeley, CA, USA
- Center for Computational Biology, University of California, Berkeley, CA, USA
| | - Simon Rasmussen
- Novo Nordisk Foundation Centre for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Richard Durbin
- Department of Genetics, University of Cambridge, Cambridge, UK
- Wellcome Sanger Institute, Hinxton, UK
| | - Rasmus Nielsen
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
- Department of Integrative Biology, University of California, Berkeley, CA, USA
| | - Olivier Delaneau
- Department of Computational Biology, University of Lausanne, Lausanne, Switzerland
- Swiss Institute of Bioinformatics, University of Lausanne, Lausanne, Switzerland
| | - Thomas Werge
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
- Department of Genetics, University of Cambridge, Cambridge, UK
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Fernando Racimo
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Kristian Kristiansen
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark
- Department of Historical Studies, University of Gothenburg, Gothenburg, Sweden
| | - Eske Willerslev
- Lundbeck Foundation GeoGenetics Centre, Globe Institute, University of Copenhagen, Copenhagen, Denmark.
- GeoGenetics Group, Department of Zoology, University of Cambridge, Cambridge, UK.
- MARUM Center for Marine Environmental Sciences and Faculty of Geosciences, University of Bremen, Bremen, Germany.
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Greene CA, Gardner AS, Wood M, Cuzzone JK. Ubiquitous acceleration in Greenland Ice Sheet calving from 1985 to 2022. Nature 2024; 625:523-528. [PMID: 38233618 DOI: 10.1038/s41586-023-06863-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/09/2023] [Indexed: 01/19/2024]
Abstract
Nearly every glacier in Greenland has thinned or retreated over the past few decades1-4, leading to glacier acceleration, increased rates of sea-level rise and climate impacts around the globe5-9. To understand how calving-front retreat has affected the ice-mass balance of Greenland, we combine 236,328 manually derived and AI-derived observations of glacier terminus positions collected from 1985 to 2022 and generate a 120-m-resolution mask defining the ice-sheet extent every month for nearly four decades. Here we show that, since 1985, the Greenland Ice Sheet (GrIS) has lost 5,091 ± 72 km2 of area, corresponding to 1,034 ± 120 Gt of ice lost to retreat. Our results indicate that, by neglecting calving-front retreat, current consensus estimates of ice-sheet mass balance4,9 have underestimated recent mass loss from Greenland by as much as 20%. The mass loss we report has had minimal direct impact on global sea level but is sufficient to affect ocean circulation and the distribution of heat energy around the globe10-12. On seasonal timescales, Greenland loses 193 ± 25 km2 (63 ± 6 Gt) of ice to retreat each year from a maximum extent in May to a minimum between September and October. We find that multidecadal retreat is highly correlated with the magnitude of seasonal advance and retreat of each glacier, meaning that terminus-position variability on seasonal timescales can serve as an indicator of glacier sensitivity to longer-term climate change.
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Affiliation(s)
- Chad A Greene
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
| | - Alex S Gardner
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Michael Wood
- Moss Landing Marine Laboratories, San José State University, San José, CA, USA
| | - Joshua K Cuzzone
- Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA
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Kumar D, Thind PSI, Sharma T. Impacts of changing climate and topography on snow cover variability of Parvati River Basin, western Himalayas, India. Environ Sci Pollut Res Int 2024; 31:1007-1025. [PMID: 38036904 DOI: 10.1007/s11356-023-31056-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 11/10/2023] [Indexed: 12/02/2023]
Abstract
Snow cover is an essential element of the Himalayan region (Third Pole), and it represents the impacts induced by climate change. Recently, studies have reported significant variations in the Himalayan snow cover area, which may impact the livelihood of a large portion of the global population. Therefore, in this study, efforts were made to estimate the association between key climate stressors (CSs), i.e., temperature and precipitation, topography, and temporal variability of snow cover area (SCA) in the Parvati River basin (PRB) of the Indian western Himalayas. In this regard, the PRB has been classified into different elevation zones, i.e., zone I to zone V, ranging from 1100 to 6200 amsl. The databases such as MODIS, MEERA-2, and ASTER DEM V2 have been used to estimate the changes in the SCA and the CSs with changes in elevation and seasons. The linear regression analysis of the dataset from 2001 to 2017 revealed a significant association and increasing trend in the SCA of zone III. However, a significant association could not be established between the elevation and the SCA for the rest of the zones. A zonal seasonal trend investigation of the SCA observed an increasing trend in zones IV and V during the summer season due to a momentous rise in snowfall and a decline in temperature. The SCA has shown a significant declining trend only during the monsoon season in zones IV and V, which is due to a strong negative relationship between the SCA and the temperature of the region. These results demonstrate the amount of SCA in zones of high elevation of the PRB has been declining at an alarming rate, which could negatively influence glaciers' retreat in the near future. Hence, it can be estimated that the outcomes of the study will act as a base for future studies, regional policy formulation, and climate modelling that can further prevent future drastic or extreme events.
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Affiliation(s)
- Deepak Kumar
- Department of Geography, IIHS, Kurukshetra University, Kurukshetra, 136119, India.
| | | | - Tejpal Sharma
- Department of Geography, Dyal Singh College, Karnal, 132001, India
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Lau SCY, Wilson NG, Golledge NR, Naish TR, Watts PC, Silva CNS, Cooke IR, Allcock AL, Mark FC, Linse K, Strugnell JM. Genomic evidence for West Antarctic Ice Sheet collapse during the Last Interglacial. Science 2023; 382:1384-1389. [PMID: 38127761 DOI: 10.1126/science.ade0664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 10/30/2023] [Indexed: 12/23/2023]
Abstract
The marine-based West Antarctic Ice Sheet (WAIS) is considered vulnerable to irreversible collapse under future climate trajectories, and its tipping point may lie within the mitigated warming scenarios of 1.5° to 2°C of the United Nations Paris Agreement. Knowledge of ice loss during similarly warm past climates could resolve this uncertainty, including the Last Interglacial when global sea levels were 5 to 10 meters higher than today and global average temperatures were 0.5° to 1.5°C warmer than preindustrial levels. Using a panel of genome-wide, single-nucleotide polymorphisms of a circum-Antarctic octopus, we show persistent, historic signals of gene flow only possible with complete WAIS collapse. Our results provide the first empirical evidence that the tipping point of WAIS loss could be reached even under stringent climate mitigation scenarios.
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Affiliation(s)
- Sally C Y Lau
- Centre for Sustainable Tropical Fisheries and Aquaculture and College of Science and Engineering, James Cook University, Townsville, Qld, Australia
- Securing Antarctica's Environmental Future, James Cook University, Townsville, Qld, Australia
| | - Nerida G Wilson
- Collections & Research, Western Australian Museum, Welshpool, WA, Australia
- School of Biological Sciences, University of Western Australia, Perth, WA, Australia
- Securing Antarctica's Environmental Future, Western Australian Museum, Welshpool, WA, Australia
| | - Nicholas R Golledge
- Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand
| | - Tim R Naish
- Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand
| | - Phillip C Watts
- Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland
| | - Catarina N S Silva
- Centre for Sustainable Tropical Fisheries and Aquaculture and College of Science and Engineering, James Cook University, Townsville, Qld, Australia
- Centre for Functional Ecology - Science for People & the Planet (CFE), Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Portugal
| | - Ira R Cooke
- Centre for Tropical Bioinformatics and Molecular Biology, James Cook University, Townsville, Qld, Australia
| | - A Louise Allcock
- School of Natural Sciences and Ryan Institute, University of Galway, Galway, Ireland
| | - Felix C Mark
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | | | - Jan M Strugnell
- Centre for Sustainable Tropical Fisheries and Aquaculture and College of Science and Engineering, James Cook University, Townsville, Qld, Australia
- Securing Antarctica's Environmental Future, James Cook University, Townsville, Qld, Australia
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50
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Torres C, Bozkurt D, Arigony-Neto J. Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula. AN ACAD BRAS CIENC 2023; 95:e20230685. [PMID: 38126382 DOI: 10.1590/0001-3765202320230685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 11/03/2023] [Indexed: 12/23/2023] Open
Abstract
Using data from SCAR observations, ERA5 reanalysis, and regional climate model simulations (RACMO), we examined the influence of large- and regional-scale climate forcing on temperature and precipitation variations in the South Shetland Islands (SSI). Specifically, we focused on understanding how regional climate indices influence the temporal variability of temperature and precipitation on the SSI. Our findings indicate that both large- and regional-scale climate indices significantly impact the interannual and seasonal temperature variability in the SSI. For instance, the Amundsen Sea Low, characterised by low-pressure systems over the Amundsen Sea, and sea ice extent in the northwestern part of the Weddell Sea, exert a strong influence on temperature variability (r from -0.64 to -0.87; p < 0.05). In contrast, precipitation variability in this region is primarily controlled by regional climatic indices. Particularly, anomalies in atmospheric and surface pressure over the Drake Passage region strongly regulate the interannual variability of precipitation in the SSI (r from -0.46 to -0.70; p < 0.05). Large-scale climatic indices demonstrate low but statistically significant correlations, including the Southern Annular Mode and deep convection in the central tropical Pacific. Given the importance of temperature and precipitation in the glacier changes, we recommend assessing the impact of the Drake region on SSI glaciers.
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Affiliation(s)
- Christian Torres
- Universidade Federal do Rio Grande/FURG, Instituto de Oceanografia, Av. Itália, s/n, Km 8, 96201-900 Rio Grande, RS, Brazil
- Universidad de Valparaíso, Departamento de Meteorología, Gran Bretaña 644, 2340000, Playa Ancha, Valparaíso, Chile
| | - Deniz Bozkurt
- Universidad de Valparaíso, Departamento de Meteorología, Gran Bretaña 644, 2340000, Playa Ancha, Valparaíso, Chile
- Universidad de Chile, Center for Climate and Resilience Research (CR)2, Blanco Encalada 2002, 4th floor, 8330015, Santiago, Chile
- Universidad de Concepción, Center for Oceanographic Research COPAS COASTAL, Edmundo Larenas 219, 4070409, Concepción, Chile
| | - Jorge Arigony-Neto
- Universidade Federal do Rio Grande/FURG, Instituto de Oceanografia, Av. Itália, s/n, Km 8, 96201-900 Rio Grande, RS, Brazil
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