101
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Castillo NA, James WR, Santos RO, Rezek R, Cerveny D, Boucek RE, Adams AJ, Trabelsi S, Distrubell A, Sandquist M, Fick J, Brodin T, Rehage JS. Identifying pathways of pharmaceutical exposure in a mesoconsumer marine fish. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135382. [PMID: 39088947 DOI: 10.1016/j.jhazmat.2024.135382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 08/03/2024]
Abstract
Pharmaceutical uptake involves processes that vary across aquatic systems and biota. However, single studies examining multiple environmental compartments, microhabitats, biota, and exposure pathways in mesoconsumer fish are sparse. We investigated the pharmaceutical burden in bonefish (Albula vulpes), pathways of exposure, and estimated exposure to a human daily dose. To evaluate exposure pathways, the number and composition of pharmaceuticals across compartments and the bioconcentration in prey and bonefish were assessed. To evaluate bioaccumulation, we proposed the use of a field-derived bioaccumulation factor (fBAF), due to variability inherent to natural systems. Exposure to a human daily dose was based on bonefish daily energetic requirements and consumption rates using pharmaceutical concentrations in prey. Pharmaceutical number and concentration were highest in prey, followed by bonefish, water and sediment. Fifteen pharmaceuticals were detected in common among bonefish, prey, and water; all of which bioconcentrated in prey and bonefish, and four bioaccumulated in bonefish. The composition of detected pharmaceuticals was compartment specific, and prey were most similar to bonefish. Bonefish were exposed to a maximum of 1.2 % of a human daily dose via prey consumption. Results highlight the need for multicompartment assessments of exposure and consideration of prey along with water as a pathway of exposure.
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Affiliation(s)
- N A Castillo
- Earth and Environment Department, Institute of Environment, Florida International University, Miami, FL, USA.
| | - W R James
- Earth and Environment Department, Institute of Environment, Florida International University, Miami, FL, USA; Department of Biology, Florida International University, Miami, FL, USA
| | - R O Santos
- Department of Biology, Florida International University, Miami, FL, USA
| | - R Rezek
- Department of Marine Science, Coastal Carolina University, Conway, SC, USA
| | - D Cerveny
- Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden; Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice, Vodňany, Czech Republic
| | - R E Boucek
- Bonefish and Tarpon Trust, Miami, FL, USA
| | - A J Adams
- Bonefish and Tarpon Trust, Miami, FL, USA; Florida Atlantic University Harbor Branch Oceanographic Institute, Fort Pierce, FL, USA
| | - S Trabelsi
- Earth and Environment Department, Institute of Environment, Florida International University, Miami, FL, USA
| | - A Distrubell
- Earth and Environment Department, Institute of Environment, Florida International University, Miami, FL, USA
| | - M Sandquist
- Earth and Environment Department, Institute of Environment, Florida International University, Miami, FL, USA
| | - J Fick
- Department of Chemistry, Umeå University, Umeå, Sweden
| | - T Brodin
- Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - J S Rehage
- Earth and Environment Department, Institute of Environment, Florida International University, Miami, FL, USA
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102
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Wang X, Qian Y, Wang Y, Wang S, Bi J, Shi C, Han Q, Wan-Yan R, Yu Q, Li H. Metagenomics reveals the potential transmission risk of resistomes from urban park environment to human. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135387. [PMID: 39094311 DOI: 10.1016/j.jhazmat.2024.135387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/20/2024] [Accepted: 07/29/2024] [Indexed: 08/04/2024]
Abstract
Urban parks play a significant role in urban ecosystems and are strongly associated with human health. Nevertheless, the biological contamination of urban parks - opportunistic pathogens and antibiotic resistance genes (ARGs) - has been poorly reported. Here, metagenomic and 16 S rRNA sequencing methods were used to study the distribution and assembly of opportunistic pathogens and ARGs in soil and water from nine parks in Lanzhou city, and further compared them with local human gut microbiomes to investigate the potential transmission risk. Our results revealed that the most important type of drug resistance in urban parks was multidrug resistance, with various resistance mechanisms. Approximately half of ARGs were shared between human gut and park environment, and it was noteworthy that cross-species transmission might exist among some high-risk ARGs, such as mepA and mdtE, with a significant enrichment in human gut. Metagenomic binning uncovered several bacterial genomes carrying adjacent ARGs, MGEs, and virulence genes, indicating a possibility that these genes may jointly transfer among different environments, particularly from park environment to human. Our results provided a reference point for the management of environmental pollutants in urban parks.
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Affiliation(s)
- Xiaochen Wang
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Yuan Qian
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Yu Wang
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Sijie Wang
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Jie Bi
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Chenwei Shi
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Qian Han
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Ruijun Wan-Yan
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Qiaoling Yu
- State Key Laboratory of Grassland Agro-ecosystems, Center for Grassland microbiome, Lanzhou University, Lanzhou 730000, China
| | - Huan Li
- School of Public Health, Lanzhou University, Lanzhou 730000, China; State Key Laboratory of Grassland Agro-ecosystems, Center for Grassland microbiome, Lanzhou University, Lanzhou 730000, China.
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103
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Gu J, Yang F, Song X, Yang S, Zhang GL. Edaphic regulation of soil organic carbon fractions in the mattic layer across the Qinghai-Tibetan Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 943:173814. [PMID: 38848915 DOI: 10.1016/j.scitotenv.2024.173814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 03/07/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
The mattic layer is a main ecological function bearer of alpine meadow soils in the Qinghai-Tibet Plateau. It has high soil organic carbon (SOC) content with a variety of SOC fractions, which are thought to have different sensitivities to climate change. The effects of soil properties and climate on the SOC fractions in the mattic layer are not well understood. To address this, we analyzed the effects of environmental factors on two SOC fractions: particulate organic carbon (POC) and mineral-associated organic carbon (MAOC). A random forest model (RFM), partial correlation analysis, and structural equation model (SEM) were used to quantify the relative effects of soil and climatic factors on SOC fractions. We found that SOC and its fractions are primarily regulated by soil properties rather than climate. Partial correlation analysis and SEM revealed that climate indirectly affects SOC by influencing soil properties. Silt+Clay and exchangeable calcium (Caex) were found to be the strongest contributing factors of MAOC and POC, respectively. A distinct shift occurs in the mechanism underlying SOC stabilization with varying soil pH. In acidic and neutral environments, amorphous Al/Fe-(hydr) oxides contribute to the stability of MAOC, whereas free Al/Fe-(hydr) oxides promote SOC mineralization. Conversely, Caex positively influences the stabilization of both POC and MAOC throughout the pH range. These results can be extrapolated to predict SOC dynamics in future soil conditions affected by environmental change, especially for use in Earth system models.
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Affiliation(s)
- Jun Gu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fei Yang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; Key Laboratory of Physical Geography and Environmental Process of Qinghai Province, School of Geographical Science, Qinghai Normal University, Xining 81000, China
| | - XiaoDong Song
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - ShunHua Yang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Gan-Lin Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
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104
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Santollo J, Daniels D. Fluid transitions. Neuropharmacology 2024; 256:110009. [PMID: 38823577 PMCID: PMC11184821 DOI: 10.1016/j.neuropharm.2024.110009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/21/2024] [Accepted: 05/23/2024] [Indexed: 06/03/2024]
Abstract
Water is critical for survival and thirst is a powerful way of ensuring that fluid levels remain in balance. Overconsumption, however, can have deleterious effects, therefore optimization requires a need to balance the drive for water with the satiation of that water drive. This review will highlight our current understanding of how thirst is both generated and quenched, with particular focus on the roles of angiotensin II, glucagon like-peptide 1, and estradiol in turning on and off the thirst drive. Our understanding of the roles these bioregulators play has benefited from modern behavioral analyses, which have improved the time resolution of intake measures, allowing for attention to the details of the patterns within a bout of intake. This has led to behavioral interpretation in ways that are helpful in understanding the many controls of water intake and has expanded our understanding beyond the dichotomy that something which increases water intake is simply a "stimulator" while something that decreases water intake is simply a "satiety" factor. Synthesizing the available information, we describe a framework in which thirst is driven directly by perturbations in fluid intake and indirectly modified by several bioregulators. This allows us to better highlight areas that are in need of additional attention to form a more comprehensive understanding of how the system transitions between states of thirst and satiety.
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Affiliation(s)
- Jessica Santollo
- Department of Biology, University of Kentucky, Lexington, KY 40506, USA.
| | - Derek Daniels
- Department of Biology, University at Buffalo, State University of New York, Buffalo, NY 14260, USA; Center for Ingestive Behavior Research, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
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105
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Ma C, Zhang R, He Z, Su P, Wang L, Yao Y, Zhang X, Liu X, Yang F. Biochar alters the soil fauna functional traits and community diversity: A quantitative and cascading perspective. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135302. [PMID: 39053065 DOI: 10.1016/j.jhazmat.2024.135302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 07/21/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
With the widespread use of biochar, the cascading effects of biochar exposure on soil fauna urgently require deeper understanding. A meta-analysis quantified hierarchical changes in functional traits and community diversity of soil fauna under biochar exposure. Antioxidant enzymes (24.1 %) did not fully mitigate the impact of MDA (13.5 %), leading to excessive DNA damage in soil fauna (21.2 %). Concurrently, reproduction, growth, and survival rates decreased by 20.2 %, 8.5 %, and 21.2 %, respectively. Due to a 39.7 % increase in avoidance behavior of soil fauna towards biochar, species richness ultimately increased by 80.2 %. Compared to other feeding habits, biochar posed a greater threat to the survival of herbivores. Additionally, macrofauna were the most sensitive to biochar. The response of soil fauna also depended on the type, size, concentration, and duration of biochar exposure. It should be emphasized that as exposure concentration increased, the damage to soil fauna became more severe. Furthermore, the smaller the biochar sizes, the greater the damage to soil fauna. To mitigate the adverse effects on soil fauna, this study recommens applying biochar at appropriate times and selecting large sizes in low to medium concentrations. These findings confirm the threat of biochar to soil health from the perspective of soil fauna.
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Affiliation(s)
- Chen Ma
- School of Environmental Science, Liaoning University, Shenyang 110036, China
| | - Runjie Zhang
- School of Environmental Science, Liaoning University, Shenyang 110036, China
| | - Zhe He
- School of Environmental Science, Liaoning University, Shenyang 110036, China.
| | - Pinjie Su
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China.
| | - Lukai Wang
- School of Environmental Science, Liaoning University, Shenyang 110036, China
| | - Yanzhong Yao
- Key Laboratory of Low-carbon Green Agriculture, Ministry of Agriculture and Rural Affairs, Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
| | - Xiaojing Zhang
- School of Environmental Science, Liaoning University, Shenyang 110036, China
| | - Xingyu Liu
- School of Environmental Science, Liaoning University, Shenyang 110036, China
| | - Fengshuo Yang
- School of Environmental Science, Liaoning University, Shenyang 110036, China
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106
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Liang W, Chen X, Chen ZL, Zhu P, Huang Z, Li J, Wang Y, Li L, He D. Unraveling the impact of Spartina alterniflora invasion on greenhouse gas production and emissions in coastal saltmarshes: New insights from dissolved organic matter characteristics and surface-porewater interactions. WATER RESEARCH 2024; 262:122120. [PMID: 39083900 DOI: 10.1016/j.watres.2024.122120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 08/02/2024]
Abstract
Saltmarshes along the Chinese coast are threatened by the invasion of Spartina alterniflora (S. alterniflora). This study was carried out in the Andong Shoal, Hangzhou Bay, China, with the aim of comprehending the intricate impacts of S. alterniflora invasion on greenhouse gases (GHG) production and emissions. To address this issue, we thoroughly examined the chemistry of dissolved organic matter (DOM) and the rate of surface water-porewater interaction. Porewater and surface water samples were collected from farm land, S. alterniflora invaded areas, and Scirpus mariqueter (S. mariqueter) dominated areas. The findings indicated that the invasion of S. alterniflora impeded the interaction between surface water and porewater, resulting in reduced porewater exchange rates within its affected region (0.015-0.440 cm d-1), in contrast to areas dominated by S. mariqueter (9.635-18.232 cm d-1). The invasion also increased dissolved organic carbon concentration in porewater and created a stable and closed soil environment that resulted in DOM with smaller molecule sizes and higher humification levels. The presence of high tryptophan-like fluorescent DOM caused an increase in the production of methane and carbon dioxide in S. alterniflora invaded area. However, both limited surface-porewater exchange and significant differences in GHG concentrations between porewater and surface water suggested that the aerenchyma tissues of S. alterniflora may play an important role in transporting GHG from soil to the atmosphere.
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Affiliation(s)
- Wenzhao Liang
- Department of Ocean Science and Center for Ocean Research in Hong Kong and Macau, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Xiaogang Chen
- Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, China
| | - Zhao Liang Chen
- Department of Ocean Science and Center for Ocean Research in Hong Kong and Macau, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Peiyuan Zhu
- Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, China
| | - Zhiyong Huang
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China
| | - Jiangshan Li
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China
| | - Yuntao Wang
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China
| | - Ling Li
- Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, China.
| | - Ding He
- Department of Ocean Science and Center for Ocean Research in Hong Kong and Macau, The Hong Kong University of Science and Technology, Hong Kong, China; State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China; State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China.
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107
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Golchin A, Misaghi M. Investigating the effects of climate change and anthropogenic activities on SOC storage and cumulative CO 2 emissions in forest soils across altitudinal gradients using the century model. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 943:173758. [PMID: 38852874 DOI: 10.1016/j.scitotenv.2024.173758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/31/2024] [Accepted: 06/02/2024] [Indexed: 06/11/2024]
Abstract
This study investigated the impact of climate change, grazing, manure application, and liming on soil organic carbon (SOC) stock and cumulative carbon dioxide (CO2) emissions in forest soils across different altitudes. Despite similar soil texture, acidity, and salinity across elevations, SOC stock significantly increased with altitude due to cooler temperatures and higher precipitation. The highest SOC stock (97.46 t ha-1) was observed at 2000-2500 m, compared to the lowest (44.23 t ha-1) at 500-1000 m. The Century C Model accurately predicted SOC stock, with correlation and determination coefficients exceeding 0.98. A climate change scenario projecting decreased precipitation (2.15 mm per decade) and increased temperature (0.4 °C) revealed potential SOC stock losses ranging from 28.36 to 36.35 %, particularly at higher altitudes. Grazing further decreased SOC stock, with a more pronounced effect at higher elevations. However, manure application (40 t ha-1 every four years) and liming (7-10 t ha-1 every three years) had positive effects on SOC stock, again amplified at higher altitudes and with an increase in lime application rate. In scenarios combining climate change with manure application and climate change with liming, manure application and liming mitigated some negative impacts of climate change, but could not fully offset them, resulting in 1.49-5.42 % and 0.39-4.07 % decreases respectively. Simulations of cumulative CO2 emissions mirrored the distribution of SOC stock, with higher emissions observed at higher altitudes and with management practices that increased SOC stock. This study emphasizes the critical role of conserving high-altitude forest soils and implementing optimal forest management strategies to combat climate change by minimizing SOC losses.
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Affiliation(s)
- Ahmad Golchin
- Department of Soil Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran.
| | - Mehran Misaghi
- Department of Soil Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran.
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108
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Park JK, Do Y. Developmental temperature modulates microplastics impact on amphibian life history without affecting ontogenetic microplastic transfer. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135325. [PMID: 39098196 DOI: 10.1016/j.jhazmat.2024.135325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/22/2024] [Accepted: 07/24/2024] [Indexed: 08/06/2024]
Abstract
This study examines how temperature influences the response of Japanese tree frogs (Dryophytes japonicus) to microplastic (MP) pollution, assessing whether temperature can regulate the harmful effects of MPs on their life history and the dispersal of MPs across habitats. This analysis aims to understand the ecological and physiological ramifications of MP pollution. Our results demonstrated an ontogenetic transfer of MP particles across amphibian metamorphosis, possibly allowing and facilitating the translocation of MPs across ecosystems. Temperature did not significantly affect the translocation of aquatic MPs to land. However, high temperatures significantly reduced mortality and hindlimb deformities caused by MPs, thereby mitigating their harmful impact on amphibian life histories. Importantly, our study found that MPs cause hindlimb deformities during amphibian metamorphosis, potentially linked to oxidative stress. Additionally, MP exposure and ingestion induced a plastic response in the morphology of the digestive tract and changes in the fecal microbiome, which were evident at high temperatures but not at low temperatures. The effects of MPs persisted even after the frogs transitioned to the terrestrial stage, suggesting that MPs may have complex, long-term impacts on amphibian population sustainability. Our results enhance the understanding of the intricate environmental challenges posed by MPs and underscore the significant role of temperature in ectotherms regarding ontogenetic impacts and pollutant interactions.
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Affiliation(s)
- Jun-Kyu Park
- Department of Biological Sciences, Kongju National University, Gongju 32588, the Republic of Korea.
| | - Yuno Do
- Department of Biological Sciences, Kongju National University, Gongju 32588, the Republic of Korea.
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109
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Mayombo NAS, Burfeid-Castellanos AM, Vermiert AM, Pimentel IM, Rehsen PM, Dani M, Jasinski C, Spyra MA, Kloster M, Vidaković D, Buchner D, Beszteri B. Functional and compositional responses of stream microphytobenthic communities to multiple stressors increase and release in a mesocosm experiment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 943:173670. [PMID: 38838995 DOI: 10.1016/j.scitotenv.2024.173670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 05/17/2024] [Accepted: 05/29/2024] [Indexed: 06/07/2024]
Abstract
Field observations form the basis of the majority of studies on microphytobenthic algal communities in freshwater ecosystems. Controlled mesocosm experiments data are comparatively uncommon. The few experimental mesocosm studies that have been conducted provide valuable insights into how multiple stressors affect the community structures and photosynthesis-related traits of benthic microalgae. The recovery process after the stressors have subsided, however, has received less attention in mesocosm studies. To close this gap, here we present the results of a riparian mesocosm experiment designed to investigate the effects of reduced flow velocity, increased salinity and increased temperature on microphytobenthic communities. We used a full factorial design with a semi-randomised distribution of treatments consisting of two levels of each stressor (2 × 2 × 2 treatments), with eight replicates making a total of 64 circular mesocosms, allowing a nuanced examination of their individual and combined influences. We aimed to elucidate the responses of microalgae communities seeded from stream water to the applied environmental stressors. Our results showed significant effects of reduced flow velocity and increased temperature on microphytobenthic communities. Recovery after stressor treatment led to a convergence in community composition, with priority effects (hypothesized to reflect competition for substrate between resident and newly arriving immigrant taxa) slowing down community shifts and biomass increase. Our study contributes to the growing body of literature on the ecological dynamics of microphytobenthos and emphasises the importance of rigorous experiments to validate hypotheses. These results encourage further investigation into the nuanced interactions between microphytobenthos and their environment and shed light on the complexity of ecological responses in benthic systems.
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Affiliation(s)
| | | | - Anna-Maria Vermiert
- Department of Animal Ecology, Evolution and Biodiversity, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Iris Madge Pimentel
- Aquatic Ecosystem Research, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Philipp M Rehsen
- Aquatic Ecosystem Research, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Mimoza Dani
- Phycology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Christina Jasinski
- Phycology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | | | - Michael Kloster
- Phycology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Danijela Vidaković
- Phycology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany; Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Dominik Buchner
- Aquatic Ecosystem Research, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Bánk Beszteri
- Phycology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
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110
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Burke LM, Davies TW, Wilcockson D, Jenkins S, Ellison A. Artificial light and cloud cover interact to disrupt celestial migrations at night. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 943:173790. [PMID: 38851339 DOI: 10.1016/j.scitotenv.2024.173790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 06/03/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024]
Abstract
The growth of human activity and infrastructure has led to an unprecedented rise in the use of Artificial Light at Night (ALAN) with demonstrable impacts on ecological communities and ecosystem services. However, there remains very little information on how ALAN interacts with or obscures light from celestial bodies, which provide vital orientating cues in a number of species. Furthermore, no studies to date have examined how climatic conditions such as cloud cover, known to influence the intensity of skyglow, interact with lunar irradiance and ALAN over the course of a lunar cycle to alter migratory abilities of species. Our night-time field study aimed to establish how lunar phase and climatic conditions (cloud cover) modulate the impact of ALAN on the abundance and migratory behaviour of Talitrus saltator, a key sandy beach detritivore which uses multiple light associated cues during nightly migrations. Our results showed that the number and size of individuals caught decreased significantly as ALAN intensity increased. Additionally, when exposed to ALAN more T. saltator were caught travelling parallel to the shoreline, indicating that the presence of ALAN is inhibiting their ability to navigate along their natural migration route, potentially impacting the distribution of the population. We found that lunar phase and cloud cover play a significant role in modifying the impact of ALAN, highlighting the importance of incorporating natural light cycles and climatic conditions when investigating ALAN impacts. Critically we demonstrate that light levels as low as 3 lx can have substantial effects on coastal invertebrate distributions. Our results provide the first evidence that ALAN impacted celestial migration can lead to changes to the distribution of a species.
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Affiliation(s)
- Leo M Burke
- Bangor University, School of Natural Sciences, Bangor LL57 2UW, UK.
| | - Thomas W Davies
- University of Plymouth, School of Biological and Marine Sciences, Drake Circus, Plymouth PL4 8AA, UK
| | - David Wilcockson
- Aberystwyth University, Department of Life Sciences, Edward Llywd Building, Aberystwyth SY23 3DA, UK
| | - Stuart Jenkins
- Bangor University, School of Ocean Sciences, Menai Bridge LL59 5AB, UK
| | - Amy Ellison
- Bangor University, School of Natural Sciences, Bangor LL57 2UW, UK
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111
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Ferzoco IMC, McCauley SJ. Novel habitats for biodiversity? A systematic review and meta-analysis of freshwater biodiversity in stormwater management ponds. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 942:173467. [PMID: 38802007 DOI: 10.1016/j.scitotenv.2024.173467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 05/29/2024]
Abstract
Stormwater ponds are increasingly becoming a dominant pond type in cities experiencing urban sprawl. These human-made ponds are designed primarily to control flooding issues associated with increased impervious surface in cities and serve to retain sediment and contaminants before flowing to urban downstream waterways. Along with these important functions, constructed ponds including stormwater ponds may be critical in urban freshwater conservation because they often represent some of the few remaining lentic environments (still water; e.g. ponds, wetlands, lakes) in many cities. We currently lack a clear understanding of the role that stormwater ponds play in serving as habitat for freshwater biodiversity. Here, we examined whether stormwater ponds support freshwater biodiversity in cities by reviewing the empirical literature on biotic community responses in urban stormwater ponds across a range of taxonomic groups. We conducted a meta-analysis on empirical papers that quantitatively examined differences in taxonomic richness between stormwater ponds and reference ponds (n = 11 papers, 22 effects). We also examined a broader set of 58 papers to qualitatively synthesize studies on stormwater pond communities and assess various indicators of habitat quality in stormwater ponds. In the studies examined, heterogeneity exists in the habitat quality of stormwater ponds and increased pollutant loads are often reported. However, the results highlight that stormwater ponds tend to contain alpha diversity comparable to reference ponds, and that overall, a range of ecologically important wildlife make use of and inhabit urban stormwater ponds. We find that stormwater ponds can often support communities with broad compositions of taxa, including those that are sensitive or vulnerable to environmental change. We compile recommendations provided within the studies in order to improve our understanding of the management of urban stormwater ponds for biodiversity conservation.
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Affiliation(s)
- Ilia Maria C Ferzoco
- Department of Biology, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, ON L5L 1C6, Canada; Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks St., Toronto, ON M5S 3B2, Canada.
| | - Shannon J McCauley
- Department of Biology, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, ON L5L 1C6, Canada; Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks St., Toronto, ON M5S 3B2, Canada
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112
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Wu F, Reding L, Starkenburg M, Leistenschneider C, Primpke S, Vianello A, Zonneveld KAF, Huserbråten MBO, Versteegh GJM, Gerdts G. Spatial distribution of small microplastics in the Norwegian Coastal Current. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 942:173808. [PMID: 38848912 DOI: 10.1016/j.scitotenv.2024.173808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
High concentrations of microplastic (MP) particles have been reported in the Arctic Ocean. However, studies on the high-resolution lateral and vertical transport of MPs from the European waters to the Arctic are still scarce. Here, we provide information about the concentrations and compositions of MPs in surface, subsurface, and deeper waters (< 1 m, ∼ 4 m, and 17-1679 m) collected at 18 stations on six transects along the Norwegian Coastal Current (NCC) using an improved Neuston Catamaran, the COntinuos MicroPlastic Automatic Sampling System (COMPASS), and in situ pumps, respectively. FTIR microscopy and spectroscopy were applied to measure MP concentration, polymer composition, and size distribution. Results indicate that the concentrations of small microplastics (SMPs, <300 μm) varied considerably (0-1240 MP m-3) within the water column, with significantly higher concentrations in the surface (189 MP m-3) and subsurface (38 MP m-3) waters compared to deeper waters (16 MP m-3). Furthermore, the average concentration of SMPs in surface water samples was four orders of magnitude higher than the abundance of large microplastics (LMPs, >300 μm), and overall, SMPs <50 μm account for >80 % of all detected MPs. However, no statistically significant geographical patterns were observed in SMP concentrations in surface/subsurface seawaters between the six sampling transects, suggesting a relatively homogeneous horizontal distribution of SMPs in the upper ocean within the NCC/Norwegian Atlantic Current (NwAC) interface. The Lagrangian particle dispersal simulation model further enabled us to assess the large-scale transport of MPs from the Northern European waters to the Arctic.
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Affiliation(s)
- Fangzhu Wu
- Shelf Sea System Ecology, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Kurpromenade 201, 27498 Helgoland, Germany.
| | - Lina Reding
- Shelf Sea System Ecology, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Kurpromenade 201, 27498 Helgoland, Germany
| | - Marrit Starkenburg
- Shelf Sea System Ecology, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Kurpromenade 201, 27498 Helgoland, Germany
| | - Clara Leistenschneider
- Shelf Sea System Ecology, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Kurpromenade 201, 27498 Helgoland, Germany; Man-Society-Environment Program, Department of Environmental Sciences, University of Basel, 4051 Basel, Switzerland
| | - Sebastian Primpke
- Shelf Sea System Ecology, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Kurpromenade 201, 27498 Helgoland, Germany
| | - Alvise Vianello
- Department of the Built Environment, Aalborg University, 9220 Aalborg Øst, Denmark
| | - Karin A F Zonneveld
- MARUM - Centre for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany; Department of Geosciences, University of Bremen, 28359 Bremen, Germany
| | - Mats B O Huserbråten
- Department of Oceanography and Climate, Institute of Marine Research, 5817 Bergen, Norway
| | - Gerard J M Versteegh
- MARUM - Centre for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany; Department of Physics and Earth Sciences, Constructor University, 28759 Bremen, Germany
| | - Gunnar Gerdts
- Shelf Sea System Ecology, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Kurpromenade 201, 27498 Helgoland, Germany
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113
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Kewessa G, Dejene T, Martín-Pinto P. Untangling the effect that replacing Ethiopia's natural forests with exotic tree plantations has on arbuscular mycorrhizal fungi. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 942:173718. [PMID: 38848925 DOI: 10.1016/j.scitotenv.2024.173718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/24/2024] [Accepted: 05/31/2024] [Indexed: 06/09/2024]
Abstract
Arbuscular mycorrhizal fungi (AMF) have a broad distribution and establish symbiotic relationships with vascular plants in tropical regions. They play a crucial role in enhancing plant nutrient absorption, mitigating pathogenic infections, and boosting the resilience of host plants to abiotic stresses, including drought under specific conditions. Many natural forests in Ethiopia are being replaced by monospecific plantations. However, the impact of these actions on AMF is unknown and, despite their ecological functions, AMF communities in various forest systems have not been thoroughly investigated. In this study, we assessed soil AMF communities in natural and plantation forests by DNA metabarcoding of the ITS2 rDNA region and assessed the influence of climate and environmental variables on the AMF community. In total, 193 AMF operational taxonomic units (OTUs), comprising nine families and 15 genera, were recorded. Glomerales was the dominant order (67.9 % of AMF OTUs) and Septoglomus fuscum, Diversispora insculpta, and Funneliformis mosseae were the dominant species. AMF were more abundant in natural forests than in plantation forests and the composition of AMF communities differed significantly from those of plantation forest. In plantation forests, soil pH, organic carbon, total nitrogen, and available phosphorus significantly influenced the composition of AMF communities, whereas in natural forest, electrical conductivity, annual rainfall, and cumulative rainfall before sample collection were significantly correlated with AMF. SIMPER analysis identified the AMF responsible for composition variances among different forest types, with the Glomeraceae family being the most significant contributor, accounting for nearly 60 % of the dissimilarity. Our findings further our understanding of the ecological niche function and the role of AMF in Ethiopia's natural forest systems and highlight the importance of prioritizing the sustainable development of degraded natural forests rather than plantations to ensure the preservation of habitats conducive to maintaining various AMF communities when devising conservation and management strategies.
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Affiliation(s)
- Gonfa Kewessa
- Sustainable Forest Management Research Institute, University of Valladolid, Avda. Madrid 44, 34071 Palencia, Spain; Department of Forestry, Ambo University, P.O. Box 19, Ambo, Ethiopia
| | - Tatek Dejene
- Sustainable Forest Management Research Institute, University of Valladolid, Avda. Madrid 44, 34071 Palencia, Spain; Ethiopian Forestry Development, Addis Ababa, Ethiopia
| | - Pablo Martín-Pinto
- Sustainable Forest Management Research Institute, University of Valladolid, Avda. Madrid 44, 34071 Palencia, Spain.
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114
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Balogh C, Jermacz Ł, Serfőző Z, Kobak J. When two evils are not equal: Differential biofouling of unionid bivalves by two invasive dreissenid species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 942:173700. [PMID: 38844235 DOI: 10.1016/j.scitotenv.2024.173700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 05/26/2024] [Accepted: 05/31/2024] [Indexed: 06/11/2024]
Abstract
Byssate bivalves are ecosystem engineers with world-wide impact on aquatic communities through habitat forming and biofouling of hard-shelled organisms. In fresh waters, they are represented by invasive Ponto-Caspian dreissenid mussels spreading throughout Europe and North America. They negatively affect globally threatened unionid mussels by fouling, which deteriorates their condition and survival. The appearance of quagga mussels (D. rostriformis bugensis, QM) in areas occupied by zebra mussels (Dreissena polymorpha, ZM) usually has led to the replacement of ZM by QM. We combined long-term field survey (Lake Balaton, Hungary) and experimental data to check differences in fouling of unionid mussels (Unio tumidus and Sinanodonta woodiana) by the two dreissenids, determine their mechanisms and predict environmental consequences of the species replacement. ZM fouled unionids evenly throughout the year, whereas QM exhibited high fluctuations, being common on unionid shells during their recruitment peak (summer), decreasing towards autumn and almost completely absent in spring. Such fluctuations did not occur on stony substrata. This pattern suggests that interspecific differences in fouling did not result from recruitment preferences, but from greater detachment of QM from unionid substratum, whereas ZM more often remained attached to their initial recruitment sites. This was supported by the results of the laboratory experiments, in which dreissenid mussels did not show any consistent preference or avoidance of unionid mussels. Whereas, QM attached less often than ZM to hard objects and showed a higher detachment rate. Furthermore, dreissenids increased detachment after substratum immersion into soft sediments, indicating their capability of coping with suffocation after the burrowing of the living substratum or its siltation. The observed pattern indicates that the replacement of ZM by QM in the dreissenid assemblage may reduce fouling pressure on unionids. On the other hand, unionids may become a refuge for ZM in habitats invaded by competitively superior QM.
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Affiliation(s)
- Csilla Balogh
- HUN-REN Balaton Limnological Research Institute, Klebelsberg Kuno u. 3, H-8237 Tihany, Hungary; National Multidisciplinary Laboratory for Climate Change, HUN-REN BLRI, Tihany, Hungary.
| | - Łukasz Jermacz
- Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Department of Ecology and Biogeography, ul. Lwowska 1, 87-100 Toruń, Poland
| | - Zoltán Serfőző
- HUN-REN Balaton Limnological Research Institute, Klebelsberg Kuno u. 3, H-8237 Tihany, Hungary; National Multidisciplinary Laboratory for Climate Change, HUN-REN BLRI, Tihany, Hungary
| | - Jarosław Kobak
- Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Department of Invertebrate Zoology and Parasitology, ul. Lwowska 1, 87-100 Toruń, Poland
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115
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Lozano VL, Paolucci EM, Sabatini SE, Noya Abad T, Muñoz C, Liquin F, Hollert H, Sylvester F. Assessing the impact of imidacloprid, glyphosate, and their mixtures on multiple biomarkers in Corbicula largillierti. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 942:173685. [PMID: 38825192 DOI: 10.1016/j.scitotenv.2024.173685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/03/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
Pesticide mixtures are frequently utilized in agriculture, yet their cumulative effects on aquatic organisms remain poorly understood. Aquatic animals can be effective bioindicators and invasive bivalves, owing to their widespread distribution, provide an opportunity to assess these impacts. Glyphosate and imidacloprid, among the most prevalent pesticides globally, are frequently detected in freshwater systems in South America. This study aims to understand the cumulative effects of pesticide mixtures on aquatic organisms, using invasive Corbicula largillierti clams from a natural stream in northwestern Argentina. We conducted 48-hour exposure experiments using two concentrations of imidacloprid (20 and 200 μg L-1 a.i), two concentrations of glyphosate (0.3 and 3 mg L-1 a.i), and two combinations of these pesticides (both at low and high concentrations, respectively), simulating the direct contamination of both pesticides based on their agronomic recipe and observed values in Argentine aquatic environments. Clam metabolism was assessed through the examination of multiple oxidative stress parameters and measuring oxygen consumption rate as a proxy for standard metabolic rate (SMR). Our findings revealed that imidacloprid has a more pronounced effect compared to glyphosate. Imidacloprid significantly decreased clam SMR and cellular levels of reduced glutathione (GSH). However, when both pesticides were present, also cellular glycogen and thiobarbituric acid-reactive substances (TBARS) were affected. Proteins and glutathione S-Transferase (GST) activity were unaffected by either pesticide or their mixture at the assayed concentrations, highlighting the need to test several stress parameters to detect toxicological impacts. Our results indicated additive effects of imidacloprid and glyphosate across all measured parameters. The combination of multiple physiological and cytological biomarkers in invasive bivalves offers significant potential to enhance biomonitoring sensitivity and obtain insights into the origins and cellular mechanisms of chemical impacts. These studies can improve pollution regulatory policies and pesticide management.
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Affiliation(s)
- V L Lozano
- Instituto para el Estudio de la Biodiversidad de Invertebrados (IEBI), Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina; Cátedra de Biología y Diversidad de Protistas Autótrofos y Fungi, Universidad Nacional de Salta, Salta, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CCT CONICET Salta-Jujuy, Salta, Argentina
| | - E M Paolucci
- Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CONICET, Buenos Aires, Argentina
| | - S E Sabatini
- Laboratorio de Enzimología, Estrés Oxidativo y Metabolismo (LEEM), Departamento de Química Biológica, IQUIBICEN-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina; Departamento de Biodiversidad y Biología Experimental (DBBE), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - T Noya Abad
- Laboratorio de Enzimología, Estrés Oxidativo y Metabolismo (LEEM), Departamento de Química Biológica, IQUIBICEN-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - C Muñoz
- Cátedra de Biología y Diversidad de Protistas Autótrofos y Fungi, Universidad Nacional de Salta, Salta, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CCT CONICET Salta-Jujuy, Salta, Argentina
| | - F Liquin
- Instituto para el Estudio de la Biodiversidad de Invertebrados (IEBI), Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina
| | - H Hollert
- Faculty of Biological Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - F Sylvester
- Instituto para el Estudio de la Biodiversidad de Invertebrados (IEBI), Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CCT CONICET Salta-Jujuy, Salta, Argentina; Faculty of Biological Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany.
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116
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Ito M, Guy-Haim T, Sawall Y, Franz M, Buchholz B, Hansen T, Neitzel P, Pansch C, Steinhoff T, Wahl M, Weinberger F, Scotti M. Responses at various levels of ecological hierarchy indicate acclimation to sequential sublethal heatwaves in a temperate benthic ecosystem. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230171. [PMID: 39034694 PMCID: PMC11293849 DOI: 10.1098/rstb.2023.0171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/28/2024] [Accepted: 05/14/2024] [Indexed: 07/23/2024] Open
Abstract
Marine heatwaves have caused massive mortality in coastal benthic ecosystems, altering community composition. Here, we aim to understand the effects of single and sequential sublethal heatwaves in a temperate benthic ecosystem, investigating their disturbance on various levels of ecological hierarchy, i.e. individual physiology, trophic groups' biomass and ecosystem carbon fluxes. To do so, we performed a near-natural experiment using outdoor benthic mesocosms along spring/summer, where communities were exposed to different thermal regimes: without heatwaves (0HW), with one heatwave (1HW) and with three heatwaves (3HWs). Gastropods were negatively impacted by one single heatwave treatment, but the exposure to three sequential heatwaves caused no response, indicating ecological stress memory. The magnitude of ecosystem carbon fluxes mostly decreased after 1HW, with a marked negative impact on mesograzers' feeding, while the overall intensity of carbon fluxes increased after 3HWs. Consumers' acclimation after the exposure to sequential heatwaves increased grazing activity, representing a threat for the macroalgae biomass. The evaluation of physiological responses and ecological interactions is crucial to interpret variations in community composition and to detect early signs of stress. Our results reveal the spread of heatwave effects along the ecological hierarchical levels, helping to predict the trajectories of ecosystem development.This article is part of the theme issue 'Connected interactions: enriching food web research by spatial and social interactions'.
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Affiliation(s)
- Maysa Ito
- Marine Ecology Research Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, Kiel24148, Germany
| | - Tamar Guy-Haim
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, Tel Shikmona, P.O.B. 2336, Haifa3102201, Israel
| | - Yvonne Sawall
- Bermuda Institute of Ocean Sciences (BIOS), 17 Ferry Reach, St George’sGE01, Bermuda
| | - Markus Franz
- Marine Ecology Research Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, Kiel24148, Germany
| | - Björn Buchholz
- Marine Ecology Research Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, Kiel24148, Germany
| | - Thomas Hansen
- Marine Ecology Research Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, Kiel24148, Germany
| | - Philipp Neitzel
- Marine Ecology Research Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, Kiel24148, Germany
| | - Christian Pansch
- Environmental and Marine Biology, Åbo Akademi University, Turku/Åbo20500, Finland
| | - Tobias Steinhoff
- Marine Ecology Research Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, Kiel24148, Germany
| | - Martin Wahl
- Marine Ecology Research Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, Kiel24148, Germany
| | - Florian Weinberger
- Marine Ecology Research Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, Kiel24148, Germany
| | - Marco Scotti
- Marine Ecology Research Division, GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstraße 1-3, Kiel24148, Germany
- National Research Council of Italy, Institute of Biosciences and Bioresources, via Madonna del Piano 10, Sesto Fiorentino50019, Italy
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117
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Gaudin M, Eveillard D, Chaffron S. Ecological associations distribution modelling of marine plankton at a global scale. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230169. [PMID: 39034696 PMCID: PMC11293856 DOI: 10.1098/rstb.2023.0169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/21/2024] [Accepted: 03/21/2024] [Indexed: 07/23/2024] Open
Abstract
Marine plankton communities form intricate networks of interacting organisms at the base of the food chain, and play a central role in regulating ocean biogeochemical cycles and climate. However, predicting plankton community shifts in response to climate change remains challenging. While species distribution models are valuable tools for predicting changes in species biogeography under climate change scenarios, they generally overlook the key role of biotic interactions, which can significantly shape ecological processes and ecosystem responses. Here, we introduce a novel statistical framework, association distribution modelling (ADM), designed to model and predict ecological associations distribution in space and time. Applied on a Tara Oceans genome-resolved metagenomics dataset, the present-day biogeography of ADM-inferred marine plankton associations revealed four major biogeographic biomes organized along a latitudinal gradient. We predicted the evolution of these biome-specific communities in response to a climate change scenario, highlighting differential responses to environmental change. Finally, we explored the functional potential of impacted plankton communities, focusing on carbon fixation, outlining the predicted evolution of its geographical distribution and implications for ecosystem function.This article is part of the theme issue 'Connected interactions: enriching food web research by spatial and social interactions'.
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Affiliation(s)
- Marinna Gaudin
- Nantes Université, École Centrale Nantes, CNRS, LS2N, UMR 6004, Nantes44000, France
- Research Federation for the Study of Global Ocean Systems Ecology and Evolution, FR2022/Tara Oceans GOSEE, Paris75016, France
| | - Damien Eveillard
- Nantes Université, École Centrale Nantes, CNRS, LS2N, UMR 6004, Nantes44000, France
- Research Federation for the Study of Global Ocean Systems Ecology and Evolution, FR2022/Tara Oceans GOSEE, Paris75016, France
| | - Samuel Chaffron
- Nantes Université, École Centrale Nantes, CNRS, LS2N, UMR 6004, Nantes44000, France
- Research Federation for the Study of Global Ocean Systems Ecology and Evolution, FR2022/Tara Oceans GOSEE, Paris75016, France
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118
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Bronstein JL, Sridhar H. Connecting and integrating cooperation within and between species. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230203. [PMID: 39034697 PMCID: PMC11293865 DOI: 10.1098/rstb.2023.0203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/31/2023] [Accepted: 01/24/2024] [Indexed: 07/23/2024] Open
Abstract
There has long been a fundamental divide in the study of cooperation: researchers focus either on cooperation within species, including but not limited to sociality, or else on cooperation between species, commonly termed mutualism. Here, we explore the ecologically and evolutionarily significant ways in which within- and between-species cooperation interact. We highlight two primary cross-linkages. First, cooperation of one type can change the context in which cooperation of the other type functions, and thus potentially its outcome. We delineate three possibilities: (i) within-species cooperation modulates benefits for a heterospecific partner; (ii) between-species cooperation affects the dynamics of within-species cooperation; and (iii) both processes take place interactively. The second type of cross-linkage emerges when resources or services that cooperation makes available are obtainable either from members of the same species or from different species. This brings cooperation at the two levels into direct interaction, to some extent obscuring the distinction between them. We expand on these intersections between within- and between-species cooperation in a diversity of taxa and interaction types. These interactions have the potential to weave together social networks and trophic dynamics, contributing to the structure and functioning of ecological communities in ways that are just beginning to be explored. This article is part of the theme issue 'Connected interactions: enriching food web research by spatial and social interactions'.
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Affiliation(s)
- Judith L. Bronstein
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ85721, USA
| | - Hari Sridhar
- Konrad Lorenz Institute for Evolution and Cognition Research, KlosterneuburgA-3400, Austria
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119
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Dansereau G, Barros C, Poisot T. Spatially explicit predictions of food web structure from regional-level data. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230166. [PMID: 39034704 PMCID: PMC11293859 DOI: 10.1098/rstb.2023.0166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 12/18/2023] [Accepted: 01/23/2024] [Indexed: 07/23/2024] Open
Abstract
Knowledge about how ecological networks vary across global scales is currently limited given the complexity of acquiring repeated spatial data for species interactions. Yet, recent developments in metawebs highlight efficient ways to first document possible interactions within regional species pools. Downscaling metawebs towards local network predictions is a promising approach to using the current data to investigate the variation of networks across space. However, issues remain in how to represent the spatial variability and uncertainty of species interactions, especially for large-scale food webs. Here, we present a probabilistic framework to downscale a metaweb based on the Canadian mammal metaweb and species occurrences from global databases. We investigated how our approach can be used to represent the variability of networks and communities between ecoregions in Canada. Species richness and interactions followed a similar latitudinal gradient across ecoregions but simultaneously identified contrasting diversity hotspots. Network motifs revealed additional areas of variation in network structure compared with species richness and number of links. Our method offers the potential to bring global predictions down to a more actionable local scale, and increases the diversity of ecological networks that can be projected in space. This article is part of the theme issue 'Connected interactions: enriching food web research by spatial and social interactions'.
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Affiliation(s)
- Gabriel Dansereau
- Département de Sciences Biologiques, Université de Montréal, Montreal, QuebecH2V 0B3, Canada
- Quebec Centre for Biodiversity Science, Montréal, QuebecH3A 1B1, Canada
| | - Ceres Barros
- Department of Forest Resources Management, University of British Columbia, Vancouver, British ColumbiaV6T 1Z4, Canada
| | - Timothée Poisot
- Département de Sciences Biologiques, Université de Montréal, Montreal, QuebecH2V 0B3, Canada
- Quebec Centre for Biodiversity Science, Montréal, QuebecH3A 1B1, Canada
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120
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Madsen A, de Silva S. Societies with fission-fusion dynamics as complex adaptive systems: the importance of scale. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230175. [PMID: 39034708 PMCID: PMC11293855 DOI: 10.1098/rstb.2023.0175] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/01/2023] [Accepted: 01/13/2024] [Indexed: 07/23/2024] Open
Abstract
In this article, we argue that social systems with fission-fusion (FF) dynamics are best characterized within a complex adaptive systems (CAS) framework. We discuss how different endogenous and exogenous factors drive scale-dependent network properties across temporal, spatial and social domains. Importantly, this view treats the dynamics themselves as objects of study, rather than variously defined notions of static 'social groups' that have hitherto dominated thinking in behavioural ecology. CAS approaches allow us to interrogate FF dynamics in taxa that do not conform to more traditional conceptualizations of sociality and encourage us to pose new types of questions regarding the sources of stability and change in social systems, distinguishing regular variations from those that would lead to system-level reorganization. This article is part of the theme issue 'Connected interactions: enriching food web research by spatial and social interactions'.
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Affiliation(s)
- Anastasia Madsen
- Department of Ecology, Behavior and Evolution, University of California, San Diego, CA92093-0021, USA
| | - Shermin de Silva
- Department of Ecology, Behavior and Evolution, University of California, San Diego, CA92093-0021, USA
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Biswas S, Bhowmik T, Ghosh K, Roy A, Lahiri A, Sarkar S, Bhadra A. Scavengers in the human-dominated landscape: an experimental study. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230179. [PMID: 39034699 PMCID: PMC11293862 DOI: 10.1098/rstb.2023.0179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 12/06/2023] [Accepted: 02/17/2024] [Indexed: 07/23/2024] Open
Abstract
Rapid urbanization is a major cause of habitat and biodiversity loss and human-animal conflict. While urbanization is inevitable, we need to develop a good understanding of the urban ecosystem and the urban-adapted species, in order to ensure sustainable cities for our future. Scavengers play a major role in urban ecosystems, and often, urban adaptation involves a shift towards scavenging behaviour in wild animals. We experimented at different sites in the state of West Bengal, India, to identify the scavenging guild within urban habitats, in response to human-provided food. Our study found a total of 17 different vertebrate species across 15 sites, over 498 sessions of observations. We carried out network analysis to understand the dynamics of the system and found that the free-ranging dog and common myna were key species within the scavenging networks. This study revealed the complexity of scavenging networks within human-dominated habitats. This article is part of the theme issue 'Connected interactions: enriching food web research by spatial and social interactions'.
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Affiliation(s)
- Sourabh Biswas
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
| | - Tathagata Bhowmik
- Department of Zoology, West Bengal State University, Barasat, India
- Department of Life Sciences, School of Arts and Sciences, Ahmedabad University, Ahmedabad, India
| | - Kalyan Ghosh
- Department of Zoology, University of Gour Banga, Malda, India
| | - Anamitra Roy
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
| | - Aesha Lahiri
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
| | - Sampita Sarkar
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
| | - Anindita Bhadra
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, West Bengal, India
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122
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Ortiz M, Hermosillo-Núñez B. Quantifying stability and resilience of eco-social keystone species complexes for coastal marine ecosystems of the Caribbean Sea and eastern Pacific: applications in conservation and monitoring programmes. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230176. [PMID: 39034701 PMCID: PMC11293858 DOI: 10.1098/rstb.2023.0176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 03/12/2024] [Accepted: 05/29/2024] [Indexed: 07/23/2024] Open
Abstract
The local stability and resilience of 13 eco-social keystone species complexes (eco-social KSCs)-considered as conservation and monitoring units-were quantified in coastal marine ecosystems located in the Caribbean and eastern Pacific. Based on Routh-Hurwitz's criterion and Levins' criteria, the eco-social KSCs corresponding to Islas Marietas National Park (Mexico) emerged as the most locally stable and resilient ecosystem. To the contrary, the eco-social KSCs determined for Guala Guala Bay (Chile) and Xcalak Reef National Park (Caribbean) were the least stable and resilient, respectively. In terms of sensitivity, the eco-social KSCs corresponding to El Cobre Bay (Chile) presented the greatest number of sensitive components. The ecological section of the KSCs is formed by a tri-trophic network, dominating self-negative feedbacks. In the case of the socio-economic section, the fisher could exhibit the three types of self-feedbacks, and instead, the demand should be controlled. The identification of eco-social KSCs and the quantification of their stabilities and resiliences allow us to approach ecosystem-based fisheries management under a climate change context. Therefore, we suggest assessing and monitoring the persistence of the eco-social KSCs herein analysed over time, as a way to conserve the fundamental network structure of these ecosystems intervened by fishing.This article is part of the theme issue 'Connected interactions: enriching food web research by spatial and social interactions'.
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Affiliation(s)
- Marco Ortiz
- Instituto de Ciencias Naturales Alexander von Humboldt, Facultad de Ciencias del Mar y Recursos Biológicos, Universidad de Antofagasta, Antofagasta, Chile
- Instituto Antofagasta, Universidad de Antofagasta, Antofagasta, Chile
| | - Brenda Hermosillo-Núñez
- Unidad Académica de Sistemas Arrecifales Puerto Morelos, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, México
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123
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Kininmonth S, Ferrando DL, Becerro M. Neighbourhood benthic configuration reveals hidden co-occurrence social diversity. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230174. [PMID: 39034706 PMCID: PMC11293851 DOI: 10.1098/rstb.2023.0174] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 03/07/2024] [Accepted: 04/20/2024] [Indexed: 07/23/2024] Open
Abstract
Ecological interactions among benthic communities are crucial for shaping marine ecosystems. Understanding these interactions is essential for predicting how ecosystems will respond to environmental changes, invasive species, and conservation management. However, determining the prevalence of species interactions at the community scale is challenging. To overcome this challenge, we employ tools from social network analysis, specifically exponential random graph modelling (ERGM). Our approach explores the relationships among animal and plant organisms within their neighbourhoods. Inspired by companion planting in agriculture, we use spatiotemporal co-occurrence as a measure of mixed species interaction. In other words, the variety of community interactions based on co-occurrence defines what we call 'co-occurrence social diversity'. Our objective is to use ERGM to quantify the proportion of interactions at both the simple paired level and the more complex triangle level, enabling us to measure and compare co-occurrence social diversity. Applying our approach to the Spanish coastal zone across eight sites, five depths, and sunlit/shaded aspects, we discover that 80% of sessile communities, consisting of over a hundred species, exhibit co-occurrence social diversity, with 5% of species consistently forming associations with other species. These organism-level interactions probably have a significant impact on the overall character of the site. This article is part of the theme issue 'Connected interactions: enriching food web research by spatial and social interactions'.
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Affiliation(s)
- Stuart Kininmonth
- Heron Island Research Station, University of Queensland, Gladstone, Queensland4670, Australia
| | - Diana López Ferrando
- Facultat de Biologia, Universitat de Barcelona, Avda. Diagonal 643, Barcelona08028, Spain
| | - Mikel Becerro
- The BITES Laboratory, Center for Advanced Studies of Blanes (CEAB-CSIC), Access Cala S Francesc 14, Blanes, Girona17300, Spain
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Feng YF, Zhang Y, Yang RJ, Li SQ, Liu XJ, Han C, Xing YF, Yang JX. Ecotoxicological assessment, oxidative response, and enzyme activity disorder of the rotifer Brachionus asplanchnoidis exposed to a toxic cocktail of spent lithium-ion battery leachate. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135050. [PMID: 38954852 DOI: 10.1016/j.jhazmat.2024.135050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/04/2024]
Abstract
Spent lithium-ion batteries (LIBs) have emerged as a major source of waste due to their low recovery rate. The physical disposal of spent LIBs can lead to the leaching of their contents into the surrounding environment. While it is widely agreed that hazardous substances such as nickel and cobalt in the leachate can pose a threat to the environment and human health, the overall composition and toxicity of LIB leachate remain unclear. In this study, a chemical analysis of leachate from spent LIBs was conducted to identify its primary constituents. The ecotoxicological parameters of the model organism, rotifer Brachionus asplanchnoidis, were assessed to elucidate the toxicity of the LIB leachate. Subsequent experiments elucidated the impacts of the LIB leachate and its representative components on the malondialdehyde (MDA) level, antioxidant capacity, and enzyme activity of B. asplanchnoidis. The results indicate that both the LIB leachate and its components are harmful to individual rotifers due to the adverse effects of stress-induced disturbances in biochemical indicators, posing a threat to population development. The intensified poisoning phenomenon under combined stress suggests the presence of complex synergistic effects among the components of LIB leachate. Due to the likely environmental and biological hazards, LIBs should be strictly managed after disposal. Additionally, more economical and eco-friendly recycling and treatment technologies need to be developed and commercialized.
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Affiliation(s)
- Yi-Fan Feng
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province 210023, PR China.
| | - Yu Zhang
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province 210023, PR China.
| | - Run-Jia Yang
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province 210023, PR China.
| | - Si-Qi Li
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province 210023, PR China.
| | - Xiao-Jie Liu
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province 210023, PR China.
| | - Cui Han
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province 210023, PR China.
| | - Yi-Fu Xing
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province 210023, PR China.
| | - Jia-Xin Yang
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing, Jiangsu Province 210023, PR China.
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125
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Dong J, Kang Y, Wang Y, Wu H, Hu Z, Guo Z, Zhang J. Critical role of benthic fauna in enhancing nanoplastics removal in constructed wetland: Performance, fate and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:134962. [PMID: 38905985 DOI: 10.1016/j.jhazmat.2024.134962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 06/02/2024] [Accepted: 06/17/2024] [Indexed: 06/23/2024]
Abstract
The presence of nanoplastics (NPs) in wastewater poses a considerable risk to ecosystems. Although constructed wetlands (CWs) have the potential to removal NPs, their efficiency is limited by insufficient consideration of ecosystem integrity. Herein, three typical benthic fauna (Corbicula fluminea, Chironomus riparius and Tubifex tubifex) were added to CWs to improve the ecological integrity of CWs, and further enhance the ecological benefits. Results indicated that the addition of C. fluminea, C. riparius and T. tubifex increased NPs removal by 19.14 %, 17.02 %, and 15.76 % than that without benthic faunas, respectively. Based on fluorescence signal analysis, the presence of benthic fauna could intake NPs, and enhanced the adsorption of NPs by plants. The addition of C. fluminea significantly increased catalase (1541.82 ± 41.35 U/g), glutathione S-transferase (0.34 ± 0.02 U/g), and superoxide dismutase (116.33 ± 6.91 U/g) activities (p < 0.05) as a defense mechanism against NPs-induced oxidative stress. Metagenomic analysis revealed that the abundances of key enzymes involved in glycolysis, the tricarboxylic acid cycle, and polystyrene metabolism pathways were increased when C. fluminea was added, corresponding to the microbial degradation of NPs. Overall, the results of this study implied that the benthic fauna can efficiently remove NPs from wastewater in CWs.
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Affiliation(s)
- Jiahao Dong
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yan Kang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Yuqi Wang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Haiming Wu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Zhen Hu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Zizhang Guo
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Jian Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong 250014, China
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126
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Morland F, Ewen JG, Santure AW, Brekke P, Hemmings N. Demographic drivers of reproductive failure in a threatened bird: Insights from a decade of data. Proc Natl Acad Sci U S A 2024; 121:e2319104121. [PMID: 39186647 DOI: 10.1073/pnas.2319104121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 07/10/2024] [Indexed: 08/28/2024] Open
Abstract
Hatching failure affects up to 77% of eggs laid by threatened bird species, yet the true prevalence and drivers of egg fertilization failure versus embryo mortality as underlying mechanisms of hatching failure are unknown. Here, using ten years of data comprising 4,371 eggs laid by a population of a threatened bird, the hihi (Notiomystis cincta), we investigate the relative importance of infertility and embryo death as drivers of hatching failure and explore population-level factors associated with them. We show that of the 1,438 eggs that failed to hatch (33% of laid eggs) between 2010 and 2020, 83% failed due to embryo mortality, with the majority failing in the early stages of embryonic development. In the most comprehensive estimates of infertility rates in a wild bird population to date, we find that fertilization failure accounts for around 17% of hatching failure overall and is more prevalent in years where the population is smaller and more male biased. Male embryos are more likely to die during early development than females, but we find no overall effect of sex on the successful development of embryos. Offspring fathered by within-pair males have significantly higher inbreeding levels than extra-pair offspring; however, we find no effect of inbreeding nor extra-pair paternity on embryo mortality. Accurately distinguishing between infertility and embryo mortality in this study provides unique insight into the underlying causes of reproductive failure over a long-term scale and reveals the complex risks of small population sizes to the reproduction of threatened species.
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Affiliation(s)
- Fay Morland
- Department of Biosciences, University of Sheffield, Sheffield S10 2TN, United Kingdom
- Institute of Zoology, Zoological Society of London, London NW8 7LS, United Kingdom
- Department of Anatomy, University of Otago, Dunedin 9016, New Zealand
| | - John G Ewen
- Institute of Zoology, Zoological Society of London, London NW8 7LS, United Kingdom
| | - Anna W Santure
- School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand
| | - Patricia Brekke
- Institute of Zoology, Zoological Society of London, London NW8 7LS, United Kingdom
| | - Nicola Hemmings
- Department of Biosciences, University of Sheffield, Sheffield S10 2TN, United Kingdom
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127
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von Schmalensee L, Süess P, Roberts KT, Gotthard K, Lehmann P. A quantitative model of temperature-dependent diapause progression. Proc Natl Acad Sci U S A 2024; 121:e2407057121. [PMID: 39196619 DOI: 10.1073/pnas.2407057121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 07/16/2024] [Indexed: 08/29/2024] Open
Abstract
Winter diapause in insects is commonly terminated through cold exposure, which, like vernalization in plants, prevents development before spring arrives. Currently, quantitative understanding of the temperature dependence of diapause termination is limited, likely because diapause phenotypes are generally cryptic to human eyes. We introduce a methodology to tackle this challenge. By consecutively moving butterfly pupae of the species Pieris napi from several different cold conditions to 20 °C, we show that diapause termination proceeds as a temperature-dependent rate process, with maximal rates at relatively cold temperatures and low rates at warm and extremely cold temperatures. Further, we show that the resulting thermal reaction norm can predict P. napi diapause termination timing under variable temperatures. Last, we show that once diapause is terminated in P. napi, subsequent development follows a typical thermal performance curve, with a maximal development rate at around 31 °C and a minimum at around 2 °C. The sequence of these thermally distinct processes (diapause termination and postdiapause development) facilitates synchronous spring eclosion in nature; cold microclimates where diapause progresses quickly do not promote fast postdiapause development, allowing individuals in warmer winter microclimates to catch up, and vice versa. The unveiling of diapause termination as one temperature-dependent rate process among others promotes a parsimonious, quantitative, and predictive model, wherein winter diapause functions both as an adaptation against premature development during fall and winter and for synchrony in spring.
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Affiliation(s)
- Loke von Schmalensee
- Department of Zoology, Stockholm University, Stockholm 10691, Sweden
- RT4, Climate, Ecosystems and Biodiversity, Bolin Centre for Climate Research, Stockholm University, Stockholm 10691, Sweden
| | - Philip Süess
- Department of Zoology, Stockholm University, Stockholm 10691, Sweden
| | - Kevin T Roberts
- Department of Zoology, Stockholm University, Stockholm 10691, Sweden
- Department of Animal Physiology, Zoological Institute and Museum, University of Greifswald, Greifswald 17489, Germany
| | - Karl Gotthard
- Department of Zoology, Stockholm University, Stockholm 10691, Sweden
- RT4, Climate, Ecosystems and Biodiversity, Bolin Centre for Climate Research, Stockholm University, Stockholm 10691, Sweden
| | - Philipp Lehmann
- Department of Zoology, Stockholm University, Stockholm 10691, Sweden
- Department of Animal Physiology, Zoological Institute and Museum, University of Greifswald, Greifswald 17489, Germany
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128
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Namuhan, Wang J, Yang G, Song Y, Yu Y, Wang J, Wang X, Shi Y, Shen Y, Han X, Wuyunna, Zhang H. Mechanisms of biodiversity loss under nitrogen enrichment: unveiling a shift from light competition to cation toxicity. THE NEW PHYTOLOGIST 2024; 243:1966-1979. [PMID: 38970455 DOI: 10.1111/nph.19941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 06/16/2024] [Indexed: 07/08/2024]
Abstract
The primary mechanisms contributing to nitrogen (N) addition induced grassland biodiversity loss, namely light competition and soil cation toxicity, are often examined separately in various studies. However, their relative significance in governing biodiversity loss along N addition gradient remains unclear. We conducted a 4-yr field experiment with five N addition rates (0, 2, 10, 20, and 50 g N m-2 yr-1) and performed a meta-analysis using global data from 239 observations in N-fertilized grassland ecosystems. Results from our field experiment and meta-analysis indicate that both light competition and soil cation (e.g. Mn2+ and Al3+) toxicity contribute to plant diversity loss under N enrichment. The relative importance of these mechanisms varied with N enrichment intensity. Light competition played a more significant role in influencing species richness under low N addition (≤ 10 g m-2 yr-1), while cation toxicity became increasingly dominant in reducing biodiversity under high N addition (>10 g m-2 yr-1). Therefore, a transition from light competition to cation toxicity occurs with increasing N availability. These findings imply that the biodiversity loss along the N gradient is regulated by distinct mechanisms, necessitating the adoption of differential management strategies to mitigate diversity loss under varying intensities of N enrichment.
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Affiliation(s)
- Namuhan
- College of Environmental and Resource Sciences, Dalian Minzu University, Dalian, 116600, China
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, 110866, China
| | - Jing Wang
- School of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China
| | - Guojiao Yang
- College of Ecology and Environment, Hainan University, Hainan, 570228, China
| | - Yantao Song
- College of Environmental and Resource Sciences, Dalian Minzu University, Dalian, 116600, China
| | - Yunguang Yu
- College of Environmental and Resource Sciences, Dalian Minzu University, Dalian, 116600, China
| | - Jidong Wang
- College of Environmental and Resource Sciences, Dalian Minzu University, Dalian, 116600, China
| | - Xiaoguang Wang
- College of Environmental and Resource Sciences, Dalian Minzu University, Dalian, 116600, China
| | - Yiping Shi
- College of Environmental and Resource Sciences, Dalian Minzu University, Dalian, 116600, China
| | - Yue Shen
- College of Environmental and Resource Sciences, Dalian Minzu University, Dalian, 116600, China
| | - Xingguo Han
- School of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Wuyunna
- College of Environmental and Resource Sciences, Dalian Minzu University, Dalian, 116600, China
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, 110866, China
| | - Haiyang Zhang
- School of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China
- School of Life Sciences, Hebei Basic Science Center for Biotic Interaction, Hebei University, Baoding, 071002, China
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129
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Marcellus M, Goud EM, Swartz N, Brown E, Soper FM. Evolutionary history and root trait coordination predict nutrient strategy in tropical legume trees. THE NEW PHYTOLOGIST 2024; 243:1711-1723. [PMID: 39005157 DOI: 10.1111/nph.19962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 06/27/2024] [Indexed: 07/16/2024]
Abstract
Plants express diverse nutrient use and acquisition traits, but it is unclear how trait combinations at the species level are constrained by phylogeny, trait coordination, or trade-offs in resource investment. One trait - nitrogen (N) fixation - is assumed to correlate with other traits and used to define plant functional groups, despite potential confounding effects of phylogeny. We quantified growth, carbon metabolism, fixation rate, root phosphatase activity (RPA), mycorrhizal colonization, and leaf and root morphology/chemistry across 22 species of fixing and nonfixing tropical Fabaceae trees under common conditions. Belowground trait variation was high even among closely related species, and most traits displayed a phylogenetic signal, including N-fixation rate and nodule biomass. Across species, we observed strong positive correlations between physiological traits such as RPA and root respiration. RPA increased ~ fourfold per unit increase in fixation, supporting the debated hypothesis that N-fixers 'trade' N for phosphatases to enhance phosphorus acquisition. Specific root length and root N differed between functional groups, though for other traits, apparent differences became nonsignificant after accounting for phylogenetic nonindependence. We conclude that evolutionary history, trait coordination, and fixation ability contribute to nutrient trait expression at the species level, and recommend explicitly considering phylogeny in analyses of functional groupings.
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Affiliation(s)
- Mia Marcellus
- Department of Biology, McGill University, Montreal, QC, H3A 1B1, Canada
| | - Ellie M Goud
- Department of Biology, Saint Mary's University, Halifax, NS, B3H 3C3, Canada
| | - Natalie Swartz
- Department of Biology, McGill University, Montreal, QC, H3A 1B1, Canada
| | - Emily Brown
- Department of Biology, McGill University, Montreal, QC, H3A 1B1, Canada
| | - Fiona M Soper
- Department of Biology, McGill University, Montreal, QC, H3A 1B1, Canada
- Bieler School of Environment, McGill University, Montreal, QC, H3A 1B1, Canada
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130
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Undrakhbayar E, Zhang XY, Wang CZ, Wang DH. The function of brown adipose tissue at different sites of the body in Brandt's voles during cold acclimation. Comp Biochem Physiol A Mol Integr Physiol 2024; 295:111655. [PMID: 38723743 DOI: 10.1016/j.cbpa.2024.111655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/06/2024] [Accepted: 05/06/2024] [Indexed: 05/13/2024]
Abstract
Ambient temperatures have great impacts on thermoregulation of small mammals. Brown adipose tissue (BAT), an obligative thermogenic tissue for small mammals, is localized not only in the interscapular depot (iBAT), but also in supraclavicular, infra/subscapular, cervical, paravertebral, and periaortic depots. The iBAT is known for its cold-induced thermogenesis, however, less has been paid attention to the function of BAT at other sites. Here, we investigated the function of BAT at different sites of the body during cold acclimation in a small rodent species. As expected, Brandt's voles (Lasiopodomys brandtii) consumed more food and reduced the body mass gain when they were exposed to cold. The voles increased resting metabolic rate and maintained a relatively lower body temperature in the cold (36.5 ± 0.27 °C) compared to those in the warm condition (37.1 ± 0.36 °C). During cold acclimation, the uncoupling protein 1 (UCP1) increased in aBAT (axillary), cBAT (anterior cervical), iBAT (interscapular), nBAT (supraclavicular), and sBAT (suprascapular). The levels of proliferating cell nuclear antigen (PCNA), a marker for cell proliferation, were higher in cBAT and iBAT in the cold than in the warm group. The pAMPK/AMPK and pCREB/CREB were increased in cBAT and iBAT during cold acclimation, respectively. These data indicate that these different sites of BAT play the cold-induced thermogenic function for small mammals.
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Affiliation(s)
- Enkhbat Undrakhbayar
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xue-Ying Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Chen-Zhu Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
| | - De-Hua Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China; School of Life Sciences, Shandong University, Qingdao 266237, China.
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131
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Yang S, Jin Y, Li S, Liu Z. Integrated approaches for comprehensive cetacean research and conservation in the East China Sea. MARINE POLLUTION BULLETIN 2024; 206:116789. [PMID: 39094284 DOI: 10.1016/j.marpolbul.2024.116789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/30/2024] [Accepted: 07/27/2024] [Indexed: 08/04/2024]
Abstract
This study thoroughly examines three cetacean monitoring methods and assessing their advantages and limitations, establishing a foundational basis for comprehensive information on composition, distribution, and behavior. While real-time and non-invasive, visual surveys favor surface-active cetaceans and are weather-dependent. Local ecological knowledge supplements insights into group behavior. Environmental DNA (eDNA) analysis efficiently detects species like the narrow-ridged finless porpoise (Neophocaena asiaeorientalis) and common bottlenose dolphin (Tursiops truncatus), offering non-invasive, and spatially adept monitoring. Furthermore, eDNA provides prey species information, revealing the narrow-ridged finless porpoise's winter migration to deeper waters due to prey distribution. The study identifies prevalent prey species, like the Japanese Anchovy (Engraulis japonicus) and Osbeck's grenadier anchovy (Coilia mystus), offering insights into the porpoise's feeding ecology and adaptation to changing prey availability in winter. This study systematically compares diverse methodologies employed in cetacean surveys, thereby yielding a comprehensive understanding of cetacean distribution, behavior, and feeding ecology.
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Affiliation(s)
- Shaobo Yang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; College of Marine Sciences of Shanghai Ocean University, Shanghai 201306, China
| | - Yan Jin
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; Key Laboratory of East China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 200090, China
| | - Shengfa Li
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; Key Laboratory of East China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 200090, China
| | - Zunlei Liu
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; Key Laboratory of East China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 200090, China.
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Luo YH, Ma LL, Cadotte MW, Seibold S, Zou JY, Burgess KS, Tan SL, Ye LJ, Zheng W, Chen ZF, Liu DT, Zhu GF, Shi XC, Zhao W, Bi Z, Huang XY, Li JH, Liu J, Li DZ, Gao LM. Testing the ectomycorrhizal-dominance hypothesis for ecosystem multifunctionality in a subtropical mountain forest. THE NEW PHYTOLOGIST 2024; 243:2401-2415. [PMID: 39073209 DOI: 10.1111/nph.20003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Accepted: 07/03/2024] [Indexed: 07/30/2024]
Abstract
Mycorrhizal associations are key mutualisms that shape the structure of forest communities and multiple ecosystem functions. However, we lack a framework for predicting the varying dominance of distinct mycorrhizal associations in an integrated proxy of multifunctionality across ecosystems. Here, we used the datasets containing diversity of mycorrhizal associations and 18 ecosystem processes related to supporting, provisioning, and regulating services to examine how the dominance of ectomycorrhiza (EcM) associations affects ecosystem multifunctionality in subtropical mountain forests in Southwest China. Meanwhile, we synthesized the prevalence of EcM-dominant effects on ecosystem functioning in forest biomes. Our results demonstrated that elevation significantly modified the distributions of EcM trees and fungal dominance, which in turn influenced multiple functions simultaneously. Multifunctionality increased with increasing proportion of EcM associations, supporting the ectomycorrhizal-dominance hypothesis. Meanwhile, we observed that the impacts of EcM dominance on individual ecosystem functions exhibited different relationships among forest biomes. Our findings highlight the importance of ectomycorrhizal dominance in regulating multifunctionality in subtropical forests. However, this ectomycorrhizal feedback in shaping ecosystem functions cannot necessarily be generalized across forests. Therefore, we argue that the predictions for ecosystem multifunctionality in response to the shifts of mycorrhizal composition could vary across space and time.
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Affiliation(s)
- Ya-Huang Luo
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- State Key Laboratory of Plant Diversity and Specialty Crops, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- Lijiang Forest Biodiversity National Observation and Research Station, Kunming Institute of Botany, Chinese Academy of Sciences, Lijiang, 674100, China
| | - Liang-Liang Ma
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Marc W Cadotte
- Biological Sciences, University of Toronto-Scarborough, Toronto, ON, M1C1A4, Canada
| | - Sebastian Seibold
- Forest Zoology, TUD Dresden University of Technology, Tharandt, 01737, Germany
- Ecosystem Dynamics and Forest Management Research Group, Department for Ecology and Ecosystem Management, Technical University of Munich, Freising, 85354, Germany
- Berchtesgaden National Park, Berchtesgaden, 83471, Germany
| | - Jia-Yun Zou
- Forest Zoology, TUD Dresden University of Technology, Tharandt, 01737, Germany
- Ecosystem Dynamics and Forest Management Research Group, Department for Ecology and Ecosystem Management, Technical University of Munich, Freising, 85354, Germany
| | - Kevin S Burgess
- Department of Biomedical Sciences, Mercer University School of Medicine, Columbus, GA, 31901, USA
| | - Shao-Lin Tan
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Lin-Jiang Ye
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Wei Zheng
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Zhi-Fa Chen
- Kunming Botanical Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - De-Tuan Liu
- Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Guang-Fu Zhu
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Xiao-Chun Shi
- Gaoligongshan National Nature Reserve Baoshan Bureau, Baoshan, 678000, China
| | - Wei Zhao
- Gaoligongshan National Nature Reserve Baoshan Bureau, Baoshan, 678000, China
| | - Zheng Bi
- Gaoligongshan National Nature Reserve Baoshan Bureau Tengchong Division, Baoshan, 679100, China
| | - Xiang-Yuan Huang
- Gaoligongshan National Nature Reserve Baoshan Bureau Tengchong Division, Baoshan, 679100, China
| | - Jia-Hua Li
- Gaoligongshan National Nature Reserve Baoshan Bureau Longyang Division, Baoshan, 678000, China
| | - Jie Liu
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- Lijiang Forest Biodiversity National Observation and Research Station, Kunming Institute of Botany, Chinese Academy of Sciences, Lijiang, 674100, China
| | - De-Zhu Li
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- Lijiang Forest Biodiversity National Observation and Research Station, Kunming Institute of Botany, Chinese Academy of Sciences, Lijiang, 674100, China
| | - Lian-Ming Gao
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- State Key Laboratory of Plant Diversity and Specialty Crops, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- Lijiang Forest Biodiversity National Observation and Research Station, Kunming Institute of Botany, Chinese Academy of Sciences, Lijiang, 674100, China
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Tennant JH, Cosentino BJ, Cleckner LB, Brubaker KM, Razavi NR. Methylmercury Concentrations More Strongly Associated With Trait Variation Than Food Web Position in Plethodontid Salamanders. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2024; 43:2045-2057. [PMID: 39031493 DOI: 10.1002/etc.5947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 03/11/2024] [Accepted: 06/10/2024] [Indexed: 07/22/2024]
Abstract
Salamanders serve as bioindicators of mercury (Hg) in both terrestrial and aquatic habitats and are an important link in the food web between low-trophic prey and higher-trophic predators. We investigated the drivers of methylmercury (MeHg) exposure in three common plethodontid salamander species in New York State, USA, including comparisons among regions, habitat types (terrestrial and semiaquatic), and color morphs of Plethodon cinereus (striped and unstriped). Nonlethal tail samples were collected from one terrestrial species (P. cinereus) and two semiaquatic species (Eurycea bislineata and Desmognathus spp.) in the Adirondack Mountains (ADK) and the Finger Lakes National Forest (FLNF) regions. Samples were analyzed for MeHg and stable isotopes, including δ15N and δ13C which are proxies of trophic position and diet, respectively. Despite elevated biota Hg concentrations typically found in the ADK, salamander MeHg concentrations did not differ by region in the terrestrial species and one of the semiaquatic species. In addition, diet and trophic level did not explain MeHg exposure in salamanders. Semiaquatic salamanders exhibited higher MeHg concentrations than terrestrial salamanders in the FLNF only. Within species, only snout-vent length predicted MeHg concentrations in E. bislineata with few other variables significant as predictors of MeHg concentrations in path models. Among P. cinereus individuals in the FLNF, the striped morph had greater MeHg concentrations than the unstriped morph, and food web tracers were not different between morphs. Overall, New York State salamander Hg concentrations were elevated compared to other locations where these species are present. The present study establishes baseline Hg data in salamanders for future assessments of changes in Hg bioavailability to forests of New York State. Environ Toxicol Chem 2024;43:2045-2057. © 2024 SETAC.
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Affiliation(s)
- Jeremiah H Tennant
- Department of Environmental Biology, State University of New York College of Environmental Science and Forestry, Syracuse, New York, USA
| | - Bradley J Cosentino
- Department of Biology, Hobart and William Smith Colleges, Geneva, New York, USA
| | - Lisa B Cleckner
- Department of Environmental Studies, Hobart and William Smith Colleges, Geneva, New York, USA
- Finger Lakes Institute, Hobart and William Smith Colleges, Geneva, New York, USA
| | - Kristen M Brubaker
- Department of Environmental Studies, Hobart and William Smith Colleges, Geneva, New York, USA
| | - N Roxanna Razavi
- Department of Environmental Biology, State University of New York College of Environmental Science and Forestry, Syracuse, New York, USA
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134
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Rueger T, MacDonald C, Harrison HB, Gardiner NM, Jones GP, Mills SC. Strength of Sexual Selection and Sex Roles Vary between Social Groups in a Coral Reef Cardinalfish. Am Nat 2024; 204:289-303. [PMID: 39179236 DOI: 10.1086/731422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2024]
Abstract
AbstractThe strength and direction of sexual selection can vary among populations. However, spatial variability is rarely explored at the level of the social group. Here we investigate sexual selection and sex roles in the paternally mouthbrooding, socially monogamous, and site-attached pajama cardinalfish, Sphaeramia nematoptera. Females were larger and more aggressive and had a longer dorsal fin filament, indicating reversed sex roles. At the scale of social groups, we show that the Bateman gradient and reproductive variance depend on the sex ratio and size of groups. In small and medium-sized groups with balanced or male-biased sex ratios, Bateman gradients were steeper for females, whereas gradients were equally steep for both sexes in large groups or when the sex ratio was female biased. For both sexes, reproductive variance increased with group size and with a higher male-to-female sex ratio. In S. nematoptera, mating opportunities outside the socially monogamous pair appear to impact sexual selection. We conclude that strength and direction of sexual selection can be masked by social dynamics in group-living species when considering only population and large-scale demographic processes.
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135
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Schmidt M, Martin I, Melzer RR. Just a matter of size? Evaluating allometry and intersexual heterometry in Pagurus bernhardus using ratios and indices (Decapoda, Anomura). Integr Zool 2024; 19:807-823. [PMID: 38123465 DOI: 10.1111/1749-4877.12794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Heterochely denotes the presence of dissimilarly sized chelipeds on opposite sides of the body, a prevalent occurrence in diverse crustaceans. Conversely, heterometry pertains to the quantifiable disparities in size between these chelipeds. Both chelipeds hold pivotal roles in activities such as foraging, mating, and defense. Consequently, individuals of both genders in heterochelic species exhibit this morphological pattern. Previous studies have identified sexual dimorphism in cheliped size, with males displaying larger major chelipeds compared to females, albeit solely relying on propodus length as a size proxy and focusing solely on the major cheliped. In our study, we meticulously examined 190 specimens of the common European hermit crab Pagurus bernhardus from two collections. We sought to elucidate allometric relationships and assess whether heterometry exhibited sex-based differences when adjusting for body size by using ratios. Our findings revealed that male chelipeds displayed hyperallometric growth relative to females, and all three calculated heterometry indices exhibited significant disparities between the sexes. Consequently, male specimens exhibited larger major and minor chelipeds, even when theoretically matched for body size with females. This phenomenon may be attributed, among other factors, to male-male contests. Should indirect mate selection favor males with larger chelipeds in proportion to their body size, this dynamic could potentiate sexual selection in their favor.
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Affiliation(s)
- Michel Schmidt
- Bavarian State Collection of Zoology, Bavarian Natural History Collections, Munich, Germany
- Faculty of Biology, Biocenter, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Munich, Germany
| | | | - Roland R Melzer
- Bavarian State Collection of Zoology, Bavarian Natural History Collections, Munich, Germany
- Faculty of Biology, Biocenter, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Munich, Germany
- GeoBio-Center, Ludwig-Maximilians-Universität München, Munich, Germany
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136
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Croft L, Matheson P, Butterworth NJ, McGaughran A. Fitness consequences of population bottlenecks in an invasive blowfly. Mol Ecol 2024; 33:e17492. [PMID: 39136044 DOI: 10.1111/mec.17492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 07/14/2024] [Accepted: 08/02/2024] [Indexed: 08/28/2024]
Abstract
Invasive species often undergo demographic bottlenecks that cause a decrease in genetic diversity and associated reductions in population fitness. Despite this, they manage to thrive in novel environments. Investigating the effects of inbreeding and genetic bottlenecks on population fitness for invasive species is, therefore, key to understanding how they may survive in new environments. We used the blowfly Calliphora vicina (Sciences, Mathématiques et Physique, 1830, 2, 1), which is native to Europe and was introduced to Australia and New Zealand, to examine the effects of genetic diversity on population fitness. We first collected 59 samples from 15 populations across New Zealand and one in Australia, and used 20,501 biallelic SNPs to investigate population genomic diversity, structure and admixture. We then explored the impacts of repeated experimental bottlenecks on population fitness by creating inbred and outbred lines of C. vicina and measuring a variety of fitness traits. In wild-caught samples, we found low overall genetic diversity, signals of genetic admixture and limited (<3%) genetic differentiation between North and South Island populations, with genetic links between the South Island and Australia. Following experimental bottlenecks, we found significant reductions in fitness for inbred lines. However, fitness effects were not felt equally across all phenotypic traits. Moreover, they were not enough to cause population collapse in any experimental line, suggesting that C. vicina (when under relaxed selection, as in laboratory settings) may be able to compensate for population bottlenecks even when highly inbred. Our results demonstrate the value of a tractable experimental system for investigating processes that may facilitate or hamper biological invasion.
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Affiliation(s)
- Lilly Croft
- Te Aka Mātuatua - School of Science, University of Waikato, Hamilton, New Zealand
| | - Paige Matheson
- Te Aka Mātuatua - School of Science, University of Waikato, Hamilton, New Zealand
| | | | - Angela McGaughran
- Te Aka Mātuatua - School of Science, University of Waikato, Hamilton, New Zealand
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137
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Wolf RP. Aggregative versus solitary settlement in Spirobranchus cariniferus gray, 1843 (serpulinae). What is the trade-off? MARINE ENVIRONMENTAL RESEARCH 2024; 200:106670. [PMID: 39121573 DOI: 10.1016/j.marenvres.2024.106670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 07/27/2024] [Accepted: 08/02/2024] [Indexed: 08/12/2024]
Abstract
Sessile marine invertebrates usually follow a distinct pattern of living in dense aggregations or as solitary individuals. However, at least some serpulins, including Spirobranchus cariniferus, seem to be able to settle aggregative or solitary. To understand how living solitary or in aggregation is beneficial, it is essential to understand the advantages and disadvantages of both settlement strategies for sessile invertebrates. Benefits of living in aggregations include securing suitable habitat, improving the probability of survival by mitigating physical stress and increasing reproductive success. However, living in patches also comes with some disadvantages for the individual, such as higher intra- and interspecific competition for food, space and oxygen. Increased physiological stress can lead to increased mortality and decreased reproductive success, whereas solitary individuals could produce more gametes because of a lack of competition for food and space. On the other hand, predators would have easier access to them, and the possibility of fertilisation success may be lower because of a lack of synchronisation and a greater distance between individuals of different sexes. These issues have not been sufficiently addressed, particularly for serpulids. Individuals of the New Zealand endemic polychaete Spirobranchus cariniferus can be found solitary and aggregative in the same habitat. Therefore, this study is the first on serpulids comparing the growth and mortality of individuals living alone or in aggregations. Hence, bi-monthly observation of mortality and growth measurements were conducted on tagged individuals in the field, and weekly observations were conducted in a laboratory-based study on individuals of both settlement configurations. A final comparison of body metrics to tube dimensions was made by removing an individual from their tube. My findings revealed that while solitary and aggregative individuals elongate their tubes at a similar rate, further correlations of the body to tube sizes lead to the conclusion that solitary worms focus more of their energy on tube growth rather than body size increment than aggregative conspecifics. Mortality is highly variable and seems not to differ between both configurations. However, individuals living in a patch can better recover from damage to their tubes. Here presented observations hopefully initiated further studies into the effects of aggregation size and density on individual growth. Results of this and subsequent studies can inform the management efforts for reefs of serpulins, bivalves and other invertebrates.
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Affiliation(s)
- Robert Paul Wolf
- Coastal Ecology Laboratory and School of Biological Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand.
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138
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Wang D, Wu G, Tian J, Li C, Liu J, Liang L, Qiu G. Efficient acid hydrolysis for compound-specific δ 15N analysis of amino acids for determining trophic positions. ENVIRONMENTAL RESEARCH 2024; 256:119223. [PMID: 38810830 DOI: 10.1016/j.envres.2024.119223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 05/31/2024]
Abstract
Compound-specific isotope analysis of nitrogen in amino acids (CSIA-AA, δ15NAA) has gained increasing popularity for elucidating energy flow within food chains and determining the trophic positions of various organisms. However, there is a lack of research on the impact of hydrolysis conditions, such as HCl concentration and hydrolysis time, on δ15NAA analysis in biota samples. In this study, we investigated two HCl concentrations (6 M and 12 M) and four hydrolysis times (2 h, 6 h, 12 h, and 24 h) for hydrolyzing and derivatizing AAs in reference materials (Tuna) and biological samples of little egret (n = 4), night heron (n = 4), sharpbelly (n = 4) and Algae (n = 1) using the n-pivaloyl-iso-propyl (NPIP) ester approach. A Dowex cation exchange resin was used to purify amino acids before derivatization. We then determined δ15NAA values using gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS). The results revealed no significant differences (p > 0.05) in δ15NAA values among samples treated with different HCl concentrations or hydrolysis times, particularly for δ15NGlx (range: 21.0-23.5‰) and δ15NPhe (range: 4.3-5.4‰) in Tuna (12 M). Trophic positions (TPs) calculated based on δ15NAA at 2 h (little egret: 2.9 ± 0.1, night heron: 2.8 ± 0.1, sharpbelly: 2.0 ± 0.1 and Algae: 1.3 ± 0.2) were consistent with those at 24 h (3.1 ± 0.1, 2.8 ± 0.1, 2.2 ± 0.1 and 1.1 ± 0.1, respectively), suggesting that a 2-h hydrolysis time and a 6 M HCl concentration are efficient pretreatment conditions for determining δ15NAA and estimating TP. Compared to the currently used hydrolysis conditions (24 h, 6 M), the proposed conditions (2 h, 6 M) accelerated the δ15NAA assay, making it faster, more convenient, and more efficient. Further research is needed to simplify the operational processes and reduce the time costs, enabling more efficient applications of CSIA-AA.
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Affiliation(s)
- Dawei Wang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Gaoen Wu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, China
| | - Jing Tian
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Chan Li
- School of Ecology and Environmental Science, Yunnan University, Kunming, 650091, China
| | - Jiemin Liu
- Guizhou Provincial People's Hospital, China
| | - Longchao Liang
- School of Chemistry and Material Science, Guizhou Normal University, Guiyang, 550025, China
| | - Guangle Qiu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China.
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139
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Mosquera GM, Marín F, Carabajo-Hidalgo A, Asbjornsen H, Célleri R, Crespo P. Ecohydrological assessment of the water balance of the world's highest elevation tropical forest (Polylepis). THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 941:173671. [PMID: 38825194 DOI: 10.1016/j.scitotenv.2024.173671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 05/15/2024] [Accepted: 05/29/2024] [Indexed: 06/04/2024]
Abstract
Polylepis trees grow at elevations above the continuous tree line (3000-5000 m a.s.l.) across the Andes. They tolerate extreme environmental conditions, making them sensitive bioindicators of global climate change. Therefore, investigating their ecohydrological role is key to understanding how the water cycle of Andean headwaters could be affected by predicted changes in environmental conditions, as well as ongoing Polylepis reforestation initiatives in the region. We estimate, for the first time, the annual water balance of a mature Polylepis forest (Polylepis reticulata) catchment (3780 m a.s.l.) located in the south Ecuadorian páramo using a unique set of field ecohydrological measurements including gross rainfall, throughfall, streamflow, and xylem sap flow in combination with the characterization of forest and soil features. We also compare the forest water balance with that of a tussock grass (Calamagrostis intermedia) catchment, the dominant páramo vegetation. Annual gross rainfall during the study period (April 2019-March 2020) was 1290.6 mm yr-1. Throughfall in the Polylepis forest represented 61.2 % of annual gross rainfall. Streamflow was the main component of the water balance of the forested site (59.6 %), while its change in soil water storage was negligible (<1 %). Forest evapotranspiration was 54.0 %, with evaporation from canopy interception (38.8 %) more than twice as high as transpiration (15.1 %). The error in the annual water balance of the Polylepis catchment was small (<15 %), providing confidence in the measurements and assumptions used to estimate its components. In comparison, streamflow and evapotranspiration at the grassland site accounted for 63.7 and 36.0 % of the water balance, respectively. Although evapotranspiration was larger in the forest catchment, its water yield was only marginally reduced (<4 %) in relation to the grassland catchment. The substantially higher soil organic matter content in the forest site (47.6 %) compared to the grassland site (31.8 %) suggests that even though Polylepis forests do not impair the hydrological function of high-Andean catchments, their presence contributes to carbon storage in the litter layer of the forest and the underlying soil. These findings provide key insights into the vegetation-water‑carbon nexus in high Andean ecosystems, which can serve as a basis for future ecohydrological studies and improved management of páramo natural resources considering changes in land use and global climate.
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Affiliation(s)
- Giovanny M Mosquera
- Departamento de Recursos Hídricos y Ciencias Ambientales (iDRHICA), Universidad de Cuenca, Cuenca, Ecuador; Departamento de Ingeniería & Grupo de Glaciología y Ecohidrología de Montañas Andinas (GEMS), Pontificia Universidad Católica del Perú (PUCP), Lima, Peru.
| | - Franklin Marín
- Facultad de Ciencias Agropecuarias, Carrera de Ingeniería Agronómica, Universidad de Cuenca, Cuenca, Ecuador; Laboratory of Quantitative Forest Ecosystem Science, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Belgium
| | - Aldemar Carabajo-Hidalgo
- Departamento de Recursos Hídricos y Ciencias Ambientales (iDRHICA), Universidad de Cuenca, Cuenca, Ecuador; Departamento de Biología Evolutiva, Ecología y Ciencias Ambientales, Universidad de Barcelona, Barcelona, Spain
| | - Heidi Asbjornsen
- Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH, USA
| | - Rolando Célleri
- Departamento de Recursos Hídricos y Ciencias Ambientales (iDRHICA), Universidad de Cuenca, Cuenca, Ecuador; Facultad de Ingeniería, Universidad de Cuenca, Cuenca, Ecuador
| | - Patricio Crespo
- Departamento de Recursos Hídricos y Ciencias Ambientales (iDRHICA), Universidad de Cuenca, Cuenca, Ecuador; Facultad de Ingeniería, Universidad de Cuenca, Cuenca, Ecuador.
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140
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Lenk A, Richter R, Kretz L, Wirth C. Effects of canopy gaps on microclimate, soil biological activity and their relationship in a European mixed floodplain forest. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 941:173572. [PMID: 38823707 DOI: 10.1016/j.scitotenv.2024.173572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 05/25/2024] [Accepted: 05/25/2024] [Indexed: 06/03/2024]
Abstract
Forest canopy gaps can influence understorey microclimate and ecosystem functions such as decomposition. Gaps can arise from silviculture or tree mortality, increasingly influenced by climate change. However, to what degree canopy gaps affect the buffered microclimate in the understorey under macroclimatic changes is unclear. We, therefore, investigated the effect of forest gaps differing in structure and size (25 gaps: single tree gaps up to 0.67 ha cuttings) on microclimate and soil biological activity compared to closed forest in a European mixed floodplain forest. During the investigation period in the drought year 2022 between May and October, mean soil moisture and temperature as well as soil and air temperature fluctuations increased with increasing openness. In summer, the highest difference of monthly means between cuttings and closed forest in the topsoil was 3.98 ± 9.43 % volumetric moisture and 2.05 ± 0.89 °C temperature, and in the air at 30 cm height 0.61 ± 0.35 °C temperature. For buffering, both the over- and understorey tree layers appeared as relevant with a particularly strong influence of understorey density on soil temperature. Three experiments, investigating soil biological activity by quantifying decomposition rates of tea and wooden spatulas as well as mesofauna feeding activity with bait-lamina stripes, revealed no significant differences between gaps and closed forest. However, we found a positive significant effect of mean soil temperature on feeding activity throughout the season. Although soil moisture decreased during this period, it showed no counteracting effect on feeding activity. Generally, very few significant relationships were observed between microclimate and soil biological activity in single experiments. Despite the dry growing season, decomposition rates remained high, suggesting temperature had a stronger influence than soil moisture. We conclude that the microclimatic differences within the gap gradient of our experiment were not strong enough to affect soil biological activity considerably.
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Affiliation(s)
- Annalena Lenk
- Systematic Botany and Functional Biodiversity, Leipzig University, Johannisallee 21, 04103 Leipzig, Germany.
| | - Ronny Richter
- Systematic Botany and Functional Biodiversity, Leipzig University, Johannisallee 21, 04103 Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany
| | - Lena Kretz
- Systematic Botany and Functional Biodiversity, Leipzig University, Johannisallee 21, 04103 Leipzig, Germany
| | - Christian Wirth
- Systematic Botany and Functional Biodiversity, Leipzig University, Johannisallee 21, 04103 Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany; Max-Planck Institute for Biogeochemistry, Hans-Knöll-Straße 10, 07745 Jena, Germany
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141
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Novick KA, Ficklin DL, Grossiord C, Konings AG, Martínez-Vilalta J, Sadok W, Trugman AT, Williams AP, Wright AJ, Abatzoglou JT, Dannenberg MP, Gentine P, Guan K, Johnston MR, Lowman LEL, Moore DJP, McDowell NG. The impacts of rising vapour pressure deficit in natural and managed ecosystems. PLANT, CELL & ENVIRONMENT 2024; 47:3561-3589. [PMID: 38348610 DOI: 10.1111/pce.14846] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 01/16/2024] [Accepted: 01/23/2024] [Indexed: 08/16/2024]
Abstract
An exponential rise in the atmospheric vapour pressure deficit (VPD) is among the most consequential impacts of climate change in terrestrial ecosystems. Rising VPD has negative and cascading effects on nearly all aspects of plant function including photosynthesis, water status, growth and survival. These responses are exacerbated by land-atmosphere interactions that couple VPD to soil water and govern the evolution of drought, affecting a range of ecosystem services including carbon uptake, biodiversity, the provisioning of water resources and crop yields. However, despite the global nature of this phenomenon, research on how to incorporate these impacts into resilient management regimes is largely in its infancy, due in part to the entanglement of VPD trends with those of other co-evolving climate drivers. Here, we review the mechanistic bases of VPD impacts at a range of spatial scales, paying particular attention to the independent and interactive influence of VPD in the context of other environmental changes. We then evaluate the consequences of these impacts within key management contexts, including water resources, croplands, wildfire risk mitigation and management of natural grasslands and forests. We conclude with recommendations describing how management regimes could be altered to mitigate the otherwise highly deleterious consequences of rising VPD.
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Affiliation(s)
- Kimberly A Novick
- O'Neill School of Public and Environmental Affairs, Indiana University, Bloomington, Indiana, USA
| | - Darren L Ficklin
- Department of Geography, Indiana University, Bloomington, Indiana, USA
| | - Charlotte Grossiord
- Plant Ecology Research Laboratory (PERL), School of Architecture, Civil and Environmental Engineering (EPFL), Lausanne, Switzerland
- Community Ecology Unit, Swiss Federal Institute for Forest, Snow and Landscape WSL, Lausanne, Switzerland
| | - Alexandra G Konings
- Department of Earth System Science, Stanford University, Stanford, California, USA
| | - Jordi Martínez-Vilalta
- CREAF, Bellaterra, Catalonia, Spain
- Universitat Autònoma de Barcelona, Bellaterra, Catalonia, Spain
| | - Walid Sadok
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, Minnesota, USA
| | - Anna T Trugman
- Department of Geography, University of California, Santa Barbara, California, USA
| | - A Park Williams
- Department of Geography, University of California, Los Angeles, California, USA
| | - Alexandra J Wright
- Department of Biological Sciences, California State University Los Angeles, Los Angeles, California, USA
| | - John T Abatzoglou
- Management of Complex Systems Department, University of California, Merced, California, USA
| | - Matthew P Dannenberg
- Department of Geographical and Sustainability Sciences, University of Iowa, Iowa City, Iowa, USA
| | - Pierre Gentine
- Department of Earth and Environmental Engineering, Columbia University, New York, New York, USA
- Center for Learning the Earth with Artificial Intelligence and Physics (LEAP), Columbia University, New York, New York, USA
| | - Kaiyu Guan
- Agroecosystem Sustainability Center, Institute for Sustainability, Energy, and Environment, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Department of Natural Resources and Environmental Sciences, College of Agricultural, Consumers, and Environmental Sciences, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- National Center for Supercomputing Applications, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Miriam R Johnston
- Department of Geographical and Sustainability Sciences, University of Iowa, Iowa City, Iowa, USA
| | - Lauren E L Lowman
- Department of Engineering, Wake Forest University, Winston-Salem, North Carolina, USA
| | - David J P Moore
- School of Natural Resources and the Environment, University of Arizona, Tucson, Arizona, USA
| | - Nate G McDowell
- Atmospheric Sciences & Global Change Division, Pacific Northwest National Laboratory, Richland, Washington, USA
- School of Biological Sciences, Washington State University, Pullman, Washington, USA
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142
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Vigo M, Barría C, Nadal M, Pauly M, Colmenero AI, Garcia-Barcelona S, Navarro J. Feeding strategies of the pelagic stingray (Pteroplatytrygon violacea) in the western Mediterranean Sea. MARINE ENVIRONMENTAL RESEARCH 2024; 200:106651. [PMID: 39059121 DOI: 10.1016/j.marenvres.2024.106651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 07/17/2024] [Accepted: 07/18/2024] [Indexed: 07/28/2024]
Abstract
Elasmobranchs play crucial roles as predators in marine ecosystems. Understanding their trophic strategies and interactions is necessary for comprehending food web dynamics and developing ecosystem-based management strategies. Although, feeding strategies can change depending on several factors, including fluctuations in prey availability throughout the year. In this study, we investigated the trophic ecology of the pelagic stingray, Pteroplatytrygon violacea, the only stingray inhabiting the pelagic environment in the western Mediterranean Sea. We found significant temporal differences in diet composition, mostly consuming pelagic zooplankton in spring, whereas benthopelagic teleosts in autumn. After contrasting different studies, P. violacea appears to have a generalist and opportunistic diet consisting of a broad spectrum of pelagic and benthopelagic species, and trophic plasticity in response to environmental fluctuations. Our findings suggest that P. violacea can present different feeding strategies, mainly pelagic, with a relatively low trophic position for a mesopredator compared to other batoids.
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Affiliation(s)
- Maria Vigo
- Institut de Ciències del Mar (ICM), CSIC, Barcelona, Spain; Department of Integrative Ecology, Stazione Zoologica Anton Dohrn, Sicily Marine Centre, Lungomare Cristoforo Colombo (complesso Roosevelt), Palermo, Italy.
| | - Claudio Barría
- Association for the Study and Conservation of Elasmobranchs and its Ecosystems (Catsharks), Barcelona, Spain; Department of Animal and Plant Biology and Ecology, Autonomous University of Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Marta Nadal
- Institut de Ciències del Mar (ICM), CSIC, Barcelona, Spain
| | - Matxalen Pauly
- Centro Oceanográfico de Málaga (IEO), CSIC, Fuengirola, Spain
| | - Ana I Colmenero
- Institut de Ciències del Mar (ICM), CSIC, Barcelona, Spain; Association for the Study and Conservation of Elasmobranchs and its Ecosystems (Catsharks), Barcelona, Spain
| | | | - Joan Navarro
- Institut de Ciències del Mar (ICM), CSIC, Barcelona, Spain
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143
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de Araujo GS, Ferreira ALG, da Maia Soares AMV, Abessa DMDS, Loureiro S. Multi-generation effects of lead (Pb) on two Daphnia species. ECOTOXICOLOGY (LONDON, ENGLAND) 2024; 33:801-817. [PMID: 39003411 DOI: 10.1007/s10646-024-02779-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/01/2024] [Indexed: 07/15/2024]
Abstract
Two monophyletic Daphnia species (Daphnia magna and D. similis) were exposed to a sub-lethal concentration of Pb (50 µg/L) for nine generations under two food regimes (usual and restricted) and analyzed for acetylcholinesterase (AChE) activity, first reproduction delay, lifespan, and net reproductive rate (R0) at the subcellular, individual, and population levels, respectively. In the sixth generation, Pb-acclimated neonates were moved to clean media for three more generations to check for recovery. The net reproductive rate (R0) of D. magna was not affected by Pb. However, Pb stimulated reproduction, reduced lifespan, and decreased AChE activity. First reproduction delay and lifespan did not improve during the recovery process, suggesting a possible genetic adaptation. Food restriction reduced R0, lifespan, delayed hatching, and increased AChE activity; the opposite outcomes were observed for D. similis. The full recovery shown by R0 suggests the physiological acclimation of D. similis. Under food restriction, the animals exhibited a reduction of R0 and lifespan, delayed first reproduction, and increased AChE activity; however, there was no effect of Pb. The recovery process under food restriction showed that D. similis might not cope with Pb exposure, indicating a failed recovery. Such outcomes indicate that one model species' sensitivity may not represent another's sensitivity.
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Affiliation(s)
- Giuliana Seraphim de Araujo
- CESAM-Centre for Environmental and Marine Studies & Department of Biology, University of Aveiro, Aveiro, Portugal
| | - Abel Luís Gonçalves Ferreira
- CESAM-Centre for Environmental and Marine Studies & Department of Biology, University of Aveiro, Aveiro, Portugal
| | | | | | - Susana Loureiro
- CESAM-Centre for Environmental and Marine Studies & Department of Biology, University of Aveiro, Aveiro, Portugal
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144
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Begum K, Hasan N, Shammi M. Selective biotic stressors' action on seed germination: A review. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 346:112156. [PMID: 38866107 DOI: 10.1016/j.plantsci.2024.112156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 06/05/2024] [Accepted: 06/08/2024] [Indexed: 06/14/2024]
Abstract
In the realm of plant biology and agriculture, seed germination serves as a fundamental process with far-reaching implications for crop production and environmental health. This comprehensive review seeks to unravel the intricate web of interactions between some biotic stressors and seed germination, addressing the pertinent issue of how these stressors influence seed germination. Different chemicals produced by interacting plants (different parts), fungi, bacteria, or insects can either promote or inhibit seed germination. Releasing chemicals that modulate signaling pathways and cellular processes significantly disrupt essential cellular functions. This disruption leads to diverse germination outcomes, introducing additional layers of complexity to this regulatory landscape. The chemicals perturb enzyme activity and membrane integrity, imposing unique challenges on the germination process. Understanding the mechanisms- how allelochemicals, mycotoxins, or bacterial toxins affect seed germination or the modes of action holds promise for more sustainable agricultural practices, enhanced pest control, and improved environmental outcomes. In sum, this review contributes to a fundamental exposition of the pivotal role of biotic stressors in shaping the germination of seeds.
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Affiliation(s)
- Kohinoor Begum
- Tropical Crop Improvement Laboratory, Saga University, Saga 840-8503, Japan; United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Nazmul Hasan
- Tropical Crop Improvement Laboratory, Saga University, Saga 840-8503, Japan; United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan; Fruit Science Laboratory, Saga University, Saga 840-8502, Japan.
| | - Mashura Shammi
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh
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145
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Izquierdo-Suzán M, Zavala-Guerrero PB, Mendoza H, Portela Salomão R, Vázquez-Pichardo M, Von Thaden JJ, Medellín RA. Mosquito (Diptera: Culicidae) diversity and arbovirus detection across an urban and agricultural landscape. Acta Trop 2024; 257:107321. [PMID: 38972559 DOI: 10.1016/j.actatropica.2024.107321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/09/2024]
Abstract
Fragmented landscapes in Mexico, characterized by a mix of agricultural, urban, and native vegetation cover, presents unique ecological characteristics that shape the mosquito community composition and mosquito-borne diseases. The extent to which landscape influences mosquito populations and mosquito-borne diseases is still poorly understood. This work assessed the effect of landscape metrics -agriculture, urban, and native vegetation cover- on mosquito diversity and arbovirus presence in fragmented tropical deciduous forests in Central Mexico during 2021. Among the 21 mosquito species across six genera we identified, Culex quinquefasciatus was the most prevalent species, followed by Aedes aegypti, Ae. albopictus, and Ae. epactius. Notably, areas with denser native vegetation cover displayed higher mosquito species richness, which could have an impact on phenomena such as the dilution effect. Zika and dengue virus were detected in 85% of captured species, with first reports of DENV in several Aedes species and ZIKV in multiple Aedes and Culex species. These findings underscore the necessity of expanding arbovirus surveillance beyond Ae. aegypti and advocate for a deeper understanding of vector ecology in fragmented landscapes to adequately address public health strategies.
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Affiliation(s)
- Mónica Izquierdo-Suzán
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, Ciudad Universitaria Coyoacán, CP 04510 CDMX, Mexico; Instituto de Ecología, Universidad Nacional Autónoma de México, Apdo. Postal 70-275, Circuito Exterior, Ciudad Universitaria Coyoacán, 04510 Ciudad de México, Mexico.
| | - Paula B Zavala-Guerrero
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de México, Ciudad de México, Mexico
| | - Hugo Mendoza
- Instituto de Ecología, Universidad Nacional Autónoma de México, Apdo. Postal 70-275, Circuito Exterior, Ciudad Universitaria Coyoacán, 04510 Ciudad de México, Mexico
| | - Renato Portela Salomão
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla de Baz, Mexico; Pós-graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brasil
| | - Mauricio Vázquez-Pichardo
- Laboratorios de Arbovirus y Virus Hemorrágicos, Instituto de Diagnóstico y Referencia Epidemiológicoos. Centro Colaborador de la OPS/OMS en arbovirus, Ciudad de México, Mexico
| | - Juan José Von Thaden
- Laboratorio de Planeación Ambiental, Universidad Autónoma Metropolitana- Xochimilco, Ciudad de México, Mexico
| | - Rodrigo A Medellín
- Instituto de Ecología, Universidad Nacional Autónoma de México, Apdo. Postal 70-275, Circuito Exterior, Ciudad Universitaria Coyoacán, 04510 Ciudad de México, Mexico
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146
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Cordeiro CAMM, Pardal A, Giménez L, Ciotti ÁM, Jenkins SR, Burrows MT, Williams GA, Christofoletti RA. Environmental factors have stronger effects than biotic processes in patterns of intertidal populations along the southeast coast of Brazil. MARINE ENVIRONMENTAL RESEARCH 2024; 200:106646. [PMID: 39048495 DOI: 10.1016/j.marenvres.2024.106646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 07/02/2024] [Accepted: 07/15/2024] [Indexed: 07/27/2024]
Abstract
Rocky shore communities are shaped by complex interactions among environmental drivers and a range of biological processes. Here, we investigated the importance of abiotic and biotic drivers on the population structure of key rocky intertidal species at 62 sites, spanning ∼50% of the Brazilian rocky shoreline (i.e., ∼500 km). Large-scale population patterns were generally explained by differences in ocean temperature and wave exposure. For the gastropod species Lottia subrugosa, differences at smaller scales (i.e., 0.1-1 km) were better explained by other abiotic influences such as freshwater discharge and substrate roughness. Based on the general population patterns of intertidal species identified, three main oceanographic groups were observed: a cold-oligotrophic grouping at northern sites (Lakes sub-region), a eutrophic group associated with large estuaries and urban zones (Santos and Guanabara bays); and a transitional warm-water group found between the two more productive areas. Larger individuals of Stramonita brasiliensis, L. subrugosa and Echinolittorina lineolata were generally found in the cold-oligotrophic system (i.e., upwelling region), while small suspension feeders dominate the warm-eutrophic systems. Evidence of bottom-up regulation was not observed, and top-down regulation effects were only observed between the whelk S. brasiliensis and its mussel prey Pernaperna. Environmental drivers as compared to biotic interactions, therefore, play a key role determining the population structure of multiple intertidal species, across a range of spatial scales along the SW Atlantic shores.
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Affiliation(s)
- Cesar A M M Cordeiro
- Laboratory of Environmental Sciences, Universidade Estadual do Norte Fluminense (UENF), Av. Alberto Lamego 2000, 28013-602, Campos dos Goytacazes, RJ, Brazil.
| | - André Pardal
- Center of Natural and Human Sciences, Federal University of ABC (CCNH/UFABC), Rua Santa Adélia 166, Santo André, SP, 09210-170, Brazil; Institute of Marine Science, Federal University of São Paulo (IMar/UNIFESP), Rua Dr Carvalho de Mendonça 144, Santos, SP, 11070-100, Brazil
| | - Luis Giménez
- School of Ocean Sciences, Bangor University, Menai Bridge, Anglesey, LL59 5AB, UK
| | - Áurea M Ciotti
- Center for Marine Biology, University of São Paulo (CEBIMar/USP), Rod. Manoel Hipólito do Rego, km 131.5, São Sebastião, SP, 1160-000, Brazil
| | - Stuart R Jenkins
- School of Ocean Sciences, Bangor University, Menai Bridge, Anglesey, LL59 5AB, UK
| | - Michael T Burrows
- Department of Ecology, Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll, PA37 1QA, UK
| | - Gray A Williams
- The Swire Institute of Marine Science and Area of Ecology & Biodiversity, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Ronaldo A Christofoletti
- Institute of Marine Science, Federal University of São Paulo (IMar/UNIFESP), Rua Dr Carvalho de Mendonça 144, Santos, SP, 11070-100, Brazil
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147
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Yao X, Song Z, Yang G, Yonas MW, Hamilton PB, Nwankwegu AS, Adeyeye O, Huang W, Luo X, Hassaan AM, Haffner GD, Zhang L. How water stability relates with timing, size, and community successions of harmful algal blooms: A case study in the Three Gorges Reservoir. MARINE POLLUTION BULLETIN 2024; 206:116781. [PMID: 39096867 DOI: 10.1016/j.marpolbul.2024.116781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 07/23/2024] [Accepted: 07/23/2024] [Indexed: 08/05/2024]
Abstract
Effective management of Harmful Algal Blooms (HABs) requires understanding factors influencing their occurrence. This study explores these dynamics in the Pengxi River, a tributary of the Three Gorges Reservoir, focusing on nutrient stratification and algal blooms. We hypothesized that nutrient levels in eutrophic waters with stable stratification correlate with HAB magnitude and that disruption of stratification triggers blooms due to nutrient shifts. A 38-day sampling campaign in Gaoyang Lake (April 16-May 23, 2022) revealed that consistent weather between April 26 and May 16 led to a surface density layer, restricting nutrient transfer and causing a bloom with 173.0 μg L-1 Chl-a on May 1. After a heavy rain on May 18, a peak bloom on May 20, dominated by Ceratium hirundinella, showed 533 μg L-1 Chl-a. There was a significant negative correlation between Cyanobacteria and C. hirundinella biomasses (r = -0.296, P < 0.01), highlighting nutrient availability and physical stability's roles in regulating HABs.
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Affiliation(s)
- Xuexing Yao
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China; Great Lakes Institute for Environmental Research, University of Windsor, N9B 3P4, Ontario, Canada
| | - Zenghui Song
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China
| | - Guanglang Yang
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China
| | - Muhammad Waqas Yonas
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China
| | - Paul B Hamilton
- National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China; Canadian Museum of Nature, 240 McLeod Street, Ottawa K1P 6P4, Ontario, Canada
| | - Amechi S Nwankwegu
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China
| | - Oluwafemi Adeyeye
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China
| | - Wei Huang
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China
| | - Xiaojiao Luo
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China
| | - Abdelrahman M Hassaan
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China
| | - G Douglas Haffner
- National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China; Great Lakes Institute for Environmental Research, University of Windsor, N9B 3P4, Ontario, Canada
| | - Lei Zhang
- College of Resources and Environment, Southwest University, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region, Southwest University, Chongqing, 400715, China; Great Lakes Institute for Environmental Research, University of Windsor, N9B 3P4, Ontario, Canada.
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148
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Charrier J, Fort J, Tessier E, Asensio O, Guillou G, Grémillet D, Marsaudon V, Gentès S, Amouroux D. Mercury compound distribution and stable isotope composition in the different compartments of seabird eggs: The case of three species breeding in East Greenland. CHEMOSPHERE 2024; 363:142857. [PMID: 39032730 DOI: 10.1016/j.chemosphere.2024.142857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 07/08/2024] [Accepted: 07/14/2024] [Indexed: 07/23/2024]
Abstract
Mercury (Hg) is a toxic contaminant of global concern and the impact on Arctic ecosystems, particularly in seabirds, is critical due to large-scale Hg transport towards polar regions and its biomagnification in marine trophic systems. While the adverse effects of Hg on reproductive processes in seabirds are established, the understanding of Hg maternal transfer pathways and their control on Hg reproductive toxicity is limited. The combination of Hg compounds speciation (inorganic mercury and monomethylmercury MMHg) and Hg stable isotope composition in the different egg compartments (yolk, albumen, membrane, and shell) before embryo development was investigated to provide information on (i) Hg maternal transfer mechanisms, (ii) influence of egg biochemical composition on Hg organotropism and (iii) proxies of inputs of Hg contamination. Eggs of three seabird species (the common eider, the black-legged kittiwake and the little auk) collected within the same breeding period (summer 2020) in East Greenland were investigated. For all seabirds, albumen and membrane, the most protein-rich compartments, were the most contaminated (from 1.2 to 2.7 μg g-1 for albumen and from 0.3 to 0.7 μg g-1 for membrane). In these two compartments, more than 82% of the total Hg amount was in the form of MMHg. Additionally, mass-dependent fractionation values (δ202Hg) were higher in albumen and membrane in the three species. This result was mainly due the organotropism of MMHg as influenced by the biochemical properties and chemical binding affinity of these proteinous compartments. Among the different egg compartments, individuals and species, mass-independent fractionation values were comparable (mean ± sd were 0.99 ± 0.11‰, 0.78 ± 0.11‰, 0.03 ± 0.05‰, 0.04 ± 0.10‰ for Δ199Hg, Δ201Hg, Δ200Hg and Δ204Hg, respectively). We conclude that initial MMHg accumulated in the three species originated from Arctic environmental reservoirs exhibiting similar and low photodemethylation extent. This result suggests a unique major source of MMHg in those ecosystems, potentially influenced by sea ice cover.
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Affiliation(s)
- Julie Charrier
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - La Rochelle Université, 2 rue Olympe de Gouges, 17000, La Rochelle, France.
| | - Jérôme Fort
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - La Rochelle Université, 2 rue Olympe de Gouges, 17000, La Rochelle, France
| | - Emmanuel Tessier
- Université de Pau et des Pays de l'Adour, E2S UPPA - CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et la Matériaux (IPREM), 2 avenue P. Angot, 64053, Pau, France
| | - Océane Asensio
- Université de Pau et des Pays de l'Adour, E2S UPPA - CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et la Matériaux (IPREM), 2 avenue P. Angot, 64053, Pau, France
| | - Gaël Guillou
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - La Rochelle Université, 2 rue Olympe de Gouges, 17000, La Rochelle, France
| | - David Grémillet
- Centre d'Ecologie Fonctionnelle & Evolutive (CEFE), UMR 5175 CNRS - Université de Montpellier, 1919 route de Mende, 34293, Montpellier 5, France; FitzPatrick Institute of African Ornithology, Department of Biological Sciences, University of Cape Town, University Ave N, Rondebosch, 7701, Cap Town, South Africa
| | - Valère Marsaudon
- Centre d'Ecologie Fonctionnelle & Evolutive (CEFE), UMR 5175 CNRS - Université de Montpellier, 1919 route de Mende, 34293, Montpellier 5, France
| | - Sophie Gentès
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - La Rochelle Université, 2 rue Olympe de Gouges, 17000, La Rochelle, France
| | - David Amouroux
- Université de Pau et des Pays de l'Adour, E2S UPPA - CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et la Matériaux (IPREM), 2 avenue P. Angot, 64053, Pau, France
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149
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Flo V, Joshi J, Sabot M, Sandoval D, Prentice IC. Incorporating photosynthetic acclimation improves stomatal optimisation models. PLANT, CELL & ENVIRONMENT 2024; 47:3478-3493. [PMID: 38589983 DOI: 10.1111/pce.14891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/04/2024] [Accepted: 03/08/2024] [Indexed: 04/10/2024]
Abstract
Stomatal opening in plant leaves is regulated through a balance of carbon and water exchange under different environmental conditions. Accurate estimation of stomatal regulation is crucial for understanding how plants respond to changing environmental conditions, particularly under climate change. A new generation of optimality-based modelling schemes determines instantaneous stomatal responses from a balance of trade-offs between carbon gains and hydraulic costs, but most such schemes do not account for biochemical acclimation in response to drought. Here, we compare the performance of six instantaneous stomatal optimisation models with and without accounting for photosynthetic acclimation. Using experimental data from 37 plant species, we found that accounting for photosynthetic acclimation improves the prediction of carbon assimilation in a majority of the tested models. Photosynthetic acclimation contributed significantly to the reduction of photosynthesis under drought conditions in all tested models. Drought effects on photosynthesis could not accurately be explained by the hydraulic impairment functions embedded in the stomatal models alone, indicating that photosynthetic acclimation must be considered to improve estimates of carbon assimilation during drought.
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Affiliation(s)
- Victor Flo
- Department of Life Sciences, Georgina Mace Centre for the Living Planet, Imperial College London, Silwood Park Campus, Ascot, UK
- Departament de Biologia Animal, Biologia Vegetal i Ecologia, Univ Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Jaideep Joshi
- Department of Geosciences, Institute of Geography, University of Bern, Bern, Switzerland
- Oeschger Centre for Climate Change Research, Faculty of Science, University of Bern, Bern, Switzerland
- Advancing Systems Analysis Program, International Institute for Applied Systems Analysis, Laxenburg, Austria
- Complexity Science and Evolution Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
| | - Manon Sabot
- ARC Centre of Excellence for Climate Extremes, Sydney, New South Wales, Australia
- Climate Change Research Centre, University of New South Wales, Sydney, New South Wales, Australia
- Department of Biogeochemical Signals, Max Planck Institute for Biogeochemistry, Jena, Germany
| | - David Sandoval
- Department of Life Sciences, Georgina Mace Centre for the Living Planet, Imperial College London, Silwood Park Campus, Ascot, UK
| | - Iain Colin Prentice
- Department of Life Sciences, Georgina Mace Centre for the Living Planet, Imperial College London, Silwood Park Campus, Ascot, UK
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150
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Huang SZ, Zhang L, Xie DJ, Tang JH, Jiang YY, Mijidsuren B, Baasan M, Luo LZ, Jiang XF. Transboundary migration of Loxostege sticticalis (Lepidoptera: Crambidae) among China, Russia and Mongolia. PEST MANAGEMENT SCIENCE 2024; 80:4650-4664. [PMID: 38775404 DOI: 10.1002/ps.8183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 04/28/2024] [Accepted: 05/03/2024] [Indexed: 08/10/2024]
Abstract
BACKGROUND The beet webworm, Loxostege sticticalis, a worldwide pest of many crops, performs a seasonal migration, causing periodic outbreaks in Asia, Europe and North America. Although long-distance migration is well documented in China, patterns of transboundary migration among China, Russia and Mongolia are largely unknown. We performed a phase analysis of L. sticticalis periodic outbreaks among three countries based on 30 years of historical population data, analyzed the wind systems during migration over boundary regions, and traced the migratory routes in a case study of outbreaks in 2008 by trajectory simulation. RESULTS Highly synchronized outbreak years of L. sticticalis were observed between China and Mongolia, China and eastern Siberia, China and western Siberia, Mongolia and eastern Siberia, eastern Siberia and western Siberia from 1978 to 2008, indicating possible transboundary migration between these regions. Winds at 300-600 m altitude, where adult migration usually occurs, also showed a high probability of northwestern winds in Haila'er (China), Chita (Russia) and Choybalsan (Mongolia), favoring successful adult migration from these areas to northern and northeastern China. Back trajectory analysis further showed that the first-generation adults that caused the severe outbreak of second-generation larvae in 2008 originated from eastern Siberia, eastern Mongolia, and the boundary regions of China-Russia and China-Mongolia. CONCLUSION Our findings demonstrated that the source of L. sticticalis outbreaks in northern China was closely related to the outbreaks in Siberia and Mongolia via long-distance transboundary windborne migration. This information will help guide international monitoring and management strategies against this notorious pest. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Shao-Zhe Huang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agriculture Science, Beijing, China
| | - Lei Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agriculture Science, Beijing, China
| | - Dian-Jie Xie
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agriculture Science, Beijing, China
| | - Ji-Hong Tang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agriculture Science, Beijing, China
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Yu-Ying Jiang
- National Agro-Technical Extension and Service Centre, Beijing, China
| | - Byambasuren Mijidsuren
- Institute of Plant Protection Research, Mongolian university of Life Science, Ulaanbaatar, Mongolia
| | - Munkhtsetseg Baasan
- Institute of Plant Protection Research, Mongolian university of Life Science, Ulaanbaatar, Mongolia
| | - Li-Zhi Luo
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agriculture Science, Beijing, China
| | - Xing-Fu Jiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agriculture Science, Beijing, China
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