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Ejaz MR, Badr K, Hassan ZU, Al-Thani R, Jaoua S. Metagenomic approaches and opportunities in arid soil research. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 953:176173. [PMID: 39260494 DOI: 10.1016/j.scitotenv.2024.176173] [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: 05/08/2024] [Revised: 09/04/2024] [Accepted: 09/07/2024] [Indexed: 09/13/2024]
Abstract
Arid soils present unique challenges and opportunities for studying microbial diversity and bioactive potential due to the extreme environmental conditions they bear. This review article investigates soil metagenomics as an emerging tool to explore complex microbial dynamics and unexplored bioactive potential in harsh environments. Utilizing advanced metagenomic techniques, diverse microbial populations that grow under extreme conditions such as high temperatures, salinity, high pH levels, and exposure to metals and radiation can be studied. The use of extremophiles to discover novel natural products and biocatalysts emphasizes the role of functional metagenomics in identifying enzymes and secondary metabolites for industrial and pharmaceutical purposes. Metagenomic sequencing uncovers a complex network of microbial diversity, offering significant potential for discovering new bioactive compounds. Functional metagenomics, connecting taxonomic diversity to genetic capabilities, provides a pathway to identify microbes' mechanisms to synthesize valuable secondary metabolites and other bioactive substances. Contrary to the common perception of desert soil as barren land, the metagenomic analysis reveals a rich diversity of life forms adept at extreme survival. It provides valuable findings into their resilience and potential applications in biotechnology. Moreover, the challenges associated with metagenomics in arid soils, such as low microbial biomass, high DNA degradation rates, and DNA extraction inhibitors and strategies to overcome these issues, outline the latest advancements in extraction methods, high-throughput sequencing, and bioinformatics. The importance of metagenomics for investigating diverse environments opens the way for future research to develop sustainable solutions in agriculture, industry, and medicine. Extensive studies are necessary to utilize the full potential of these powerful microbial communities. This research will significantly improve our understanding of microbial ecology and biotechnology in arid environments.
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Affiliation(s)
- Muhammad Riaz Ejaz
- Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Science, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Kareem Badr
- Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Science, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Zahoor Ul Hassan
- Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Science, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Roda Al-Thani
- Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Science, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Samir Jaoua
- Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Science, Qatar University, P.O. Box 2713, Doha, Qatar.
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2
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He P, Ye Q, Yu K, Wang H, Xu H, Yin Q, Yue M, Liang X, Wang W, You Z, Zhong Y, Liu H. Growing-Season Precipitation Is a Key Driver of Plant Leaf Area to Sapwood Area Ratio at the Global Scale. PLANT, CELL & ENVIRONMENT 2024. [PMID: 39327871 DOI: 10.1111/pce.15169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 09/05/2024] [Accepted: 09/09/2024] [Indexed: 09/28/2024]
Abstract
Leaf area to sapwood area ratio (AL/AS) influences carbon sequestration, community composition, and ecosystem functioning in terrestrial vegetation and is closely related to leaf economics and hydraulics. However, critical predictors of AL/AS are not well understood. We compiled an AL/AS data set with 1612 species-site combinations (1137 species from 285 sites worldwide) from our field experiments and published literature. We found the global mean AL/AS to be 0.63 m2 cm-2, with its variation largely driven by growing-season precipitation (Pgs), which accounted for 18% of the variation in AL/AS. Species in tropical rainforests exhibited the highest AL/AS (0.82 m2 cm-2), whereas desert species showed the lowest AL/AS (0.16 m2 cm-2). Soil factors such as soil nitrogen and soil organic carbon exhibited positive effects on AL/AS, whereas soil pH was negatively correlated with AL/AS. Tree density accounted for 7% of the variation in AL/AS. All biotic and abiotic predictors collectively explained up to 45% of the variation in AL/AS. Additionally, AL/AS was positively correlated to the net primary productivity (NPP) of the ecosystem. Our study provides insights into the driving factors of AL/AS at the global scale and highlights the importance of AL/AS in ecosystem productivity. Given that Pgs is the most critical driver of AL/AS, alterations in global precipitation belts, particularly seasonal precipitation, may induce changes in plant leaf area on the branches.
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Affiliation(s)
- Pengcheng He
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Qing Ye
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- College of Life Sciences, Gannan Normal University, Ganzhou, China
| | - Kailiang Yu
- Princeton Environmental Institute, Princeton University, Princeton, New Jersey, USA
| | - Han Wang
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China
| | - Huiying Xu
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China
- Department of Geography, University of Exeter, Exeter, UK
| | - Qiulong Yin
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Ming Yue
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Xi'an, China
| | - Xingyun Liang
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Weiren Wang
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Zhangtian You
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Yi Zhong
- College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Hui Liu
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
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3
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Wood JD, Detto M, Browne M, Kraft NJB, Konings AG, Fisher JB, Quetin GR, Trugman AT, Magney TS, Medeiros CD, Vinod N, Buckley TN, Sack L. The Ecosystem as Super-Organ/ism, Revisited: Scaling Hydraulics to Forests under Climate Change. Integr Comp Biol 2024; 64:424-440. [PMID: 38886119 DOI: 10.1093/icb/icae073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 05/27/2024] [Accepted: 06/03/2024] [Indexed: 06/20/2024] Open
Abstract
Classic debates in community ecology focused on the complexities of considering an ecosystem as a super-organ or organism. New consideration of such perspectives could clarify mechanisms underlying the dynamics of forest carbon dioxide (CO2) uptake and water vapor loss, important for predicting and managing the future of Earth's ecosystems and climate system. Here, we provide a rubric for considering ecosystem traits as aggregated, systemic, or emergent, i.e., representing the ecosystem as an aggregate of its individuals or as a metaphorical or literal super-organ or organism. We review recent approaches to scaling-up plant water relations (hydraulics) concepts developed for organs and organisms to enable and interpret measurements at ecosystem-level. We focus on three community-scale versions of water relations traits that have potential to provide mechanistic insight into climate change responses of forest CO2 and H2O gas exchange and productivity: leaf water potential (Ψcanopy), pressure volume curves (eco-PV), and hydraulic conductance (Keco). These analyses can reveal additional ecosystem-scale parameters analogous to those typically quantified for leaves or plants (e.g., wilting point and hydraulic vulnerability) that may act as thresholds in forest responses to drought, including growth cessation, mortality, and flammability. We unite these concepts in a novel framework to predict Ψcanopy and its approaching of critical thresholds during drought, using measurements of Keco and eco-PV curves. We thus delineate how the extension of water relations concepts from organ- and organism-scales can reveal the hydraulic constraints on the interaction of vegetation and climate and provide new mechanistic understanding and prediction of forest water use and productivity.
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Affiliation(s)
- Jeffrey D Wood
- School of Natural Resources, University of Missouri, Columbia, MO 65211, USA
| | - Matteo Detto
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA
| | - Marvin Browne
- Department of Earth System Science, Stanford University, 473 Via Ortega, Stanford, CA 94305, USA
| | - Nathan J B Kraft
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 621 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Alexandra G Konings
- Department of Earth System Science, Stanford University, 473 Via Ortega, Stanford, CA 94305, USA
| | - Joshua B Fisher
- Schmid College of Science and Technology, Chapman University, 1 University Drive, Orange, CA 92866, USA
| | - Gregory R Quetin
- Department of Geography, University of California, Santa Barbara, CA 93106, USA
| | - Anna T Trugman
- Department of Geography, University of California, Santa Barbara, CA 93106, USA
| | - Troy S Magney
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
| | - Camila D Medeiros
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 621 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Nidhi Vinod
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 621 Charles E Young Drive South, Los Angeles, CA 90095, USA
| | - Thomas N Buckley
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
| | - Lawren Sack
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 621 Charles E Young Drive South, Los Angeles, CA 90095, USA
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4
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de Conto T, Armston J, Dubayah R. Characterizing the structural complexity of the Earth's forests with spaceborne lidar. Nat Commun 2024; 15:8116. [PMID: 39284819 PMCID: PMC11405527 DOI: 10.1038/s41467-024-52468-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 09/07/2024] [Indexed: 09/22/2024] Open
Abstract
Forest structural complexity is a key element of ecosystem functioning, impacting light environments, nutrient cycling, biodiversity, and habitat quality. Addressing the need for a comprehensive global assessment of actual forest structural complexity, we derive a near-global map of 3D canopy complexity using data from the GEDI spaceborne lidar mission. These data show that tropical forests harbor most of the high complexity observations, while less than 20% of temperate forests reached median levels of tropical complexity. Structural complexity in tropical forests is more strongly related to canopy attributes from lower and middle waveform layers, whereas in temperate forests upper and middle layers are more influential. Globally, forests exhibit robust scaling relationships between complexity and canopy height, but these vary geographically and by biome. Our results offer insights into the spatial distribution of forest structural complexity and emphasize the importance of considering biome-specific and fine-scale variations for ecological research and management applications. The GEDI Waveform Structural Complexity Index data product, derived from our analyses, provides researchers and conservationists with a single, easily interpretable metric by combining various aspects of canopy structure.
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Affiliation(s)
- Tiago de Conto
- University of Maryland, 2181 Samuel J. LeFrak Hall, 7251 Preinkert Drive, College Park, MD, USA
| | - John Armston
- University of Maryland, 2181 Samuel J. LeFrak Hall, 7251 Preinkert Drive, College Park, MD, USA
| | - Ralph Dubayah
- University of Maryland, 2181 Samuel J. LeFrak Hall, 7251 Preinkert Drive, College Park, MD, USA.
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5
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Anderegg WRL, Martinez-Vilalta J, Mencuccini M, Poyatos R. Community assembly influences plant trait economic spectra and functional trade-offs at ecosystem scales. Proc Natl Acad Sci U S A 2024; 121:e2404034121. [PMID: 38905242 PMCID: PMC11214073 DOI: 10.1073/pnas.2404034121] [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: 02/28/2024] [Accepted: 05/10/2024] [Indexed: 06/23/2024] Open
Abstract
Plant functional traits hold the potential to greatly improve the understanding and prediction of climate impacts on ecosystems and carbon cycle feedback to climate change. Traits are commonly used to place species along a global conservative-acquisitive trade-off, yet how and if functional traits and conservative-acquisitive trade-offs scale up to mediate community and ecosystem fluxes is largely unknown. Here, we combine functional trait datasets and multibiome datasets of forest water and carbon fluxes at the species, community, and ecosystem-levels to quantify the scaling of the tradeoff between maximum flux and sensitivity to vapor pressure deficit. We find a strong conservative-acquisitive trade-off at the species scale, which weakens modestly at the community scale and largely disappears at the ecosystem scale. Functional traits, particularly plant water transport (hydraulic) traits, are strongly associated with the key dimensions of the conservative-acquisitive trade-off at community and ecosystem scales, highlighting that trait composition appears to influence community and ecosystem flux dynamics. Our findings provide a foundation for improving carbon cycle models by revealing i) that plant hydraulic traits are most strongly associated with community- and ecosystem scale flux dynamics and ii) community assembly dynamics likely need to be considered explicitly, as they give rise to ecosystem-level flux dynamics that differ substantially from trade-offs identified at the species-level.
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Affiliation(s)
- William R. L. Anderegg
- Wilkes Center for Climate Science and Policy, University of Utah, Salt Lake City, UT84103
- School of Biological Sciences, University of Utah, Salt Lake City, UT84103
| | - Jordi Martinez-Vilalta
- Ecological and Forestry Applications Research Centre (CREAF), Bellaterra (Cerdanyola del Vallès), CataloniaE08193, Spain
- Department of Animal Biology, Plant Biology and Ecology, Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), CataloniaE08193, Spain
| | - Maurizio Mencuccini
- Ecological and Forestry Applications Research Centre (CREAF), Bellaterra (Cerdanyola del Vallès), CataloniaE08193, Spain
- Institució Catalana de Recerca i Estudis Avançats, Barcelona, CataloniaE08010, Spain
| | - Rafael Poyatos
- Ecological and Forestry Applications Research Centre (CREAF), Bellaterra (Cerdanyola del Vallès), CataloniaE08193, Spain
- Department of Animal Biology, Plant Biology and Ecology, Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), CataloniaE08193, Spain
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6
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Qiu T, Peñuelas J, Chen Y, Sardans J, Yu J, Xu Z, Cui Q, Liu J, Cui Y, Zhao S, Chen J, Wang Y, Fang L. Arbuscular mycorrhizal fungal interactions bridge the support of root-associated microbiota for slope multifunctionality in an erosion-prone ecosystem. IMETA 2024; 3:e187. [PMID: 38898982 PMCID: PMC11183171 DOI: 10.1002/imt2.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 06/21/2024]
Abstract
The role of diverse soil microbiota in restoring erosion-induced degraded lands is well recognized. Yet, the facilitative interactions among symbiotic arbuscular mycorrhizal (AM) fungi, rhizobia, and heterotrophic bacteria, which underpin multiple functions in eroded ecosystems, remain unclear. Here, we utilized quantitative microbiota profiling and ecological network analyses to explore the interplay between the diversity and biotic associations of root-associated microbiota and multifunctionality across an eroded slope of a Robinia pseudoacacia plantation on the Loess Plateau. We found explicit variations in slope multifunctionality across different slope positions, associated with shifts in limiting resources, including soil phosphorus (P) and moisture. To cope with P limitation, AM fungi were recruited by R. pseudoacacia, assuming pivotal roles as keystones and connectors within cross-kingdom networks. Furthermore, AM fungi facilitated the assembly and composition of bacterial and rhizobial communities, collectively driving slope multifunctionality. The symbiotic association among R. pseudoacacia, AM fungi, and rhizobia promoted slope multifunctionality through enhanced decomposition of recalcitrant compounds, improved P mineralization potential, and optimized microbial metabolism. Overall, our findings highlight the crucial role of AM fungal-centered microbiota associated with R. pseudoacacia in functional delivery within eroded landscapes, providing valuable insights for the sustainable restoration of degraded ecosystems in erosion-prone regions.
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Affiliation(s)
- Tianyi Qiu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A&F UniversityYanglingChina
- College of Natural Resources and EnvironmentNorthwest A&F UniversityYanglingChina
- Key Laboratory of Green Utilization of Critical Non‐metallic Mineral Resources, Ministry of EducationWuhan University of TechnologyWuhanChina
| | - Josep Peñuelas
- Consejo Superior de Investigaciones CientíficasGlobal Ecology Unit Centre de Recerca Ecològica i Aplicacions Forestals‐Consejo Superior de Investigaciones Científicas‐Universitat Autònoma de BarcelonaBellaterraSpain
- Centre de Recerca Ecològica i Aplicacions ForestalsCerdanyola del VallèsCataloniaSpain
| | - Yinglong Chen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A&F UniversityYanglingChina
- College of Natural Resources and EnvironmentNorthwest A&F UniversityYanglingChina
- School of Agriculture and Environment, Institute of AgricultureThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Jordi Sardans
- Consejo Superior de Investigaciones CientíficasGlobal Ecology Unit Centre de Recerca Ecològica i Aplicacions Forestals‐Consejo Superior de Investigaciones Científicas‐Universitat Autònoma de BarcelonaBellaterraSpain
- Centre de Recerca Ecològica i Aplicacions ForestalsCerdanyola del VallèsCataloniaSpain
| | - Jialuo Yu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingChina
| | - Zhiyuan Xu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A&F UniversityYanglingChina
- College of Natural Resources and EnvironmentNorthwest A&F UniversityYanglingChina
| | - Qingliang Cui
- Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYanglingChina
| | - Ji Liu
- Hubei Province Key Laboratory for Geographical Process Analysis and SimulationCentral China Normal UniversityWuhanChina
| | - Yongxing Cui
- Institute of BiologyFreie Universität BerlinBerlinGermany
| | - Shuling Zhao
- Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYanglingChina
| | - Jing Chen
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Yunqiang Wang
- Chinese Academy of Sciences Center for Excellence in Quaternary Science and Global ChangeChinese Academy of SciencesXi'anChina
| | - Linchuan Fang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A&F UniversityYanglingChina
- Key Laboratory of Green Utilization of Critical Non‐metallic Mineral Resources, Ministry of EducationWuhan University of TechnologyWuhanChina
- Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYanglingChina
- Chinese Academy of Sciences Center for Excellence in Quaternary Science and Global ChangeChinese Academy of SciencesXi'anChina
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7
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Montesano PM, Frost M, Li J, Carroll M, Neigh CSR, Macander MJ, Sexton JO, Frost GV. A shift in transitional forests of the North American boreal will persist through 2100. COMMUNICATIONS EARTH & ENVIRONMENT 2024; 5:290. [PMID: 38826489 PMCID: PMC11142915 DOI: 10.1038/s43247-024-01454-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 05/17/2024] [Indexed: 06/04/2024]
Abstract
High northern latitude changes with Arctic amplification across a latitudinal forest gradient suggest a shift towards an increased presence of trees and shrubs. The persistence of change may depend on the future scenarios of climate and on the current state, and site history, of forest structure. Here, we explore the persistence of a gradient-based shift in the boreal by connecting current forest patterns to recent tree cover trends and future modeled estimates of canopy height through 2100. Results show variation in the predicted potential height changes across the structural gradient from the boreal forest through the taiga-tundra ecotone. Positive potential changes in height are concentrated in transitional forests, where recent positive changes in cover prevail, while potential change in boreal forest is highly variable. Results are consistent across climate scenarios, revealing a persistent biome shift through 2100 in North America concentrated in transitional landscapes regardless of climate scenario.
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Affiliation(s)
- Paul M. Montesano
- NASA Goddard Space Flight Center, Greenbelt, MD USA
- ADNET Systems, Inc., Bethesda, MD USA
| | - Melanie Frost
- NASA Goddard Space Flight Center, Greenbelt, MD USA
- ASRC Federal InuTeq, Beltsville, MD USA
| | - Jian Li
- NASA Goddard Space Flight Center, Greenbelt, MD USA
- ASRC Federal InuTeq, Beltsville, MD USA
| | - Mark Carroll
- NASA Goddard Space Flight Center, Greenbelt, MD USA
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Liu X, Feng Y, Hu T, Luo Y, Zhao X, Wu J, Maeda EE, Ju W, Liu L, Guo Q, Su Y. Enhancing ecosystem productivity and stability with increasing canopy structural complexity in global forests. SCIENCE ADVANCES 2024; 10:eadl1947. [PMID: 38748796 PMCID: PMC11095460 DOI: 10.1126/sciadv.adl1947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 04/12/2024] [Indexed: 05/19/2024]
Abstract
Forest canopy structural complexity (CSC) plays a crucial role in shaping forest ecosystem productivity and stability, but the precise nature of their relationships remains controversial. Here, we mapped the global distribution of forest CSC and revealed the factors influencing its distribution using worldwide light detection and ranging data. We find that forest CSC predominantly demonstrates significant positive relationships with forest ecosystem productivity and stability globally, although substantial variations exist among forest ecoregions. The effects of forest CSC on productivity and stability are the balanced results of biodiversity and resource availability, providing valuable insights for comprehending forest ecosystem functions. Managed forests are found to have lower CSC but more potent enhancing effects of forest CSC on ecosystem productivity and stability than intact forests, highlighting the urgent need to integrate forest CSC into the development of forest management plans for effective climate change mitigation.
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Affiliation(s)
- Xiaoqiang Liu
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuhao Feng
- Institute of Ecology, College of Urban and Environmental Science, Peking University, Beijing 100871, China
| | - Tianyu Hu
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yue Luo
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoxia Zhao
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jin Wu
- School of Biological Sciences and Institute for Climate and Carbon Neutrality, The University of Hong Kong, Pok Fu Lam, Hong Kong, China
| | - Eduardo E. Maeda
- Department of Geosciences and Geography, University of Helsinki, Helsinki FI-00014, Finland
- Finnish Meteorological Institute, FMI, Helsinki, Finland
| | - Weiming Ju
- Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, International Institute for Earth System Science, Nanjing University, Nanjing 210023, China
| | - Lingli Liu
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qinghua Guo
- Institute of Ecology, College of Urban and Environmental Science, Peking University, Beijing 100871, China
- Institute of Remote Sensing and Geographical Information Systems, School of Earth and Space Sciences, Peking University, Beijing 100871, China
| | - Yanjun Su
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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9
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Hisano M, Ghazoul J, Chen X, Chen HYH. Functional diversity enhances dryland forest productivity under long-term climate change. SCIENCE ADVANCES 2024; 10:eadn4152. [PMID: 38657059 PMCID: PMC11042740 DOI: 10.1126/sciadv.adn4152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 03/20/2024] [Indexed: 04/26/2024]
Abstract
Short-term experimental studies provided evidence that plant diversity increases ecosystem resilience and resistance to drought events, suggesting diversity to serve as a nature-based solution to address climate change. However, it remains unclear whether the effects of diversity are momentary or still hold over the long term in natural forests to ensure that the sustainability of carbon sinks. By analyzing 57 years of inventory data from dryland forests in Canada, we show that productivity of dryland forests decreased at an average rate of 1.3% per decade, in concert with the temporally increasing temperature and decreasing water availability. Increasing functional trait diversity from its minimum (monocultures) to maximum value increased productivity by 13%. Our results demonstrate the potential role of tree functional trait diversity in alleviating climate change impacts on dryland forests. While recognizing that nature-based climate mitigation (e.g., planting trees) can only be partial solutions, their long-term (decadal) efficacy can be improved by enhancing functional trait diversity across the forest community.
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Affiliation(s)
- Masumi Hisano
- Graduate School of Informatics, Kyoto University, Yoshida-honmachi, Sakyo, Kyoto, 606-8501, Japan
- Ecosystem Management, Institute of Terrestrial Ecosystems, Department of Environmental System Science, ETH Zürich, Universitätstrasse 16, 8092 Zürich, Switzerland
- Department of Ecosystem Studies, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-8657, Japan
- Faculty of Natural Resources Management, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada
| | - Jaboury Ghazoul
- Ecosystem Management, Institute of Terrestrial Ecosystems, Department of Environmental System Science, ETH Zürich, Universitätstrasse 16, 8092 Zürich, Switzerland
| | - Xinli Chen
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Han Y. H. Chen
- Faculty of Natural Resources Management, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada
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10
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Zhang S, Chen Y, Zhou X, Zhu B. Spatial patterns and drivers of ecosystem multifunctionality in China: Arid vs. humid regions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:170868. [PMID: 38367730 DOI: 10.1016/j.scitotenv.2024.170868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 02/19/2024]
Abstract
Ecosystem multifunctionality (EMF) refers to an ecosystem's capacity to simultaneously uphold multiple ecological functions or services. In terrestrial ecosystems, the potential patterns and processes of EMF remain largely unexplored, limiting our comprehension of how ecosystems react to various driving factors. We collected environmental, soil and plant nutrient data, investigate the spatial distribution characteristics of EMF in China's terrestrial ecosystems, differentiating between arid and humid regions and examining the underlying drivers. Our findings reveal substantial spatial heterogeneity in the distribution of EMF across China's terrestrial ecosystems, with pronounced variations between arid and humid regions. In arid regions, the EMF index predominantly falls within the range of -1 to 1, including approximately 66.8 % of the total area, while in humid regions, the EMF index primarily falls within the range of 0 to 2, covering around 55.2 % of the total area. Climate, soil, and vegetation factors account for 61.4 % and 51.9 % of the total EMF variation in arid and humid regions, respectively. Notably, climate emerges as the dominant factor governing EMF variation in arid regions, whereas soil physicochemical properties take precedence in humid regions. Specifically, mean annual temperature (MAT) emerges as the primary factor influencing EMF variation in arid regions, while the normalized difference vegetation index (NDVI) and soil biodiversity index (SBI) play pivotal roles in regulating EMF variation in humid regions. Indeed, climate can exert both direct and indirect influences on EMF. In summary, our study not only compared the disparities in the spatial distribution of EMF in arid and humid regions but also unveiled the distinct controlling factors that govern EMF changes in these different regions. Our research has contributed novel insights for evaluating the drivers responsible for mediating EMF in diverse ecosystems, shedding light on the adaptability and response mechanisms of ecosystems under varying environmental conditions.
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Affiliation(s)
- Shihang Zhang
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yusen Chen
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Xiaobing Zhou
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Bo Zhu
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, China.
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11
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Tariq A, Ullah A, Graciano C, Zeng F, Gao Y, Sardans J, Hughes AC, Zhang Z, Peñuelas J. Combining different species in restoration is not always the right decision: Monocultures can provide higher ecological functions than intercropping in a desert ecosystem. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 357:120807. [PMID: 38569266 DOI: 10.1016/j.jenvman.2024.120807] [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: 10/21/2023] [Revised: 03/28/2024] [Accepted: 03/31/2024] [Indexed: 04/05/2024]
Abstract
Vegetation restoration in deserts is challenging due to these ecosystems' inherent fragility and harsh environmental conditions. One approach for active restoration involves planting native species, which can accelerate the recovery of ecosystem functions. To ensure the effectiveness of this process, carefully selecting species for planting is crucial. Generally, it is expected that a more diverse mix of species in the plantation will lead to the recovery of a greater number of ecosystem functions, especially when the selected species have complementary niche traits that facilitate maximum cooperation and minimize competition among them. In this study, we evaluated the planting of two native species from the hyper-desert of Taklamakan, China, which exhibit marked morpho-physiological differences: a phreatophytic legume (Alhagi sparsifolia) and a halophytic non-legume (Karelinia caspia). These species were grown in both monoculture and intercrop communities. Monoculture of the legume resulted in the highest biomass accumulation. Intercropping improved several ecosystem functions in the 50 cm-upper soil, particularly those related to phosphorus (P), carbon (C), and sulfur (S) concentrations, as well as soil enzyme activities. However, it also increased soil sodium (Na+) concentration and pH. Halophyte monocultures enhanced ecological functions associated with nitrogen concentrations in the upper soil and with P, S, C, and cation concentrations (K+, Ca2+, Mg2+, Cu2+, Fe2+, Zn2+, Co2+, Ni2+), along with enzyme activities in the deep soil. It also maximized Na+ accumulation in plant biomass. In summary, we recommend legume monoculture when the primary goal is to optimize biomass accumulation. Conversely, halophyte monoculture is advisable when the objective is to extract sodium from the soil or enhance ecosystem functions in the deep soil. Intercropping the two species is recommended to maximize the ecosystem functions of the upper soil, provided there is no salinization risk. When planning restoration efforts in desert regions, it is essential to understand the impact of each species on ecosystem function and how complementary species behave when intercropped. However, these interactions are likely species- and system-specific, highlighting the need for more work to optimize solutions for different arid ecosystems.
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Affiliation(s)
- Akash Tariq
- Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, 848300, China; University of Chinese Academy of Sciences, Beijing, 100049, China; CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, 08193, Barcelona, Catalonia, Spain; CREAF, Cerdanyola Del Vallès, 08193, Catalonia, Spain.
| | - Abd Ullah
- Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, 848300, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Corina Graciano
- Instituto de Fisiología Vegetal, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata 1900, Buenos Aires, Argentina
| | - Fanjiang Zeng
- Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, 848300, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Yanju Gao
- Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, 848300, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jordi Sardans
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, 08193, Barcelona, Catalonia, Spain; CREAF, Cerdanyola Del Vallès, 08193, Catalonia, Spain
| | - Alice C Hughes
- School of Biological Sciences, University of Hong Kong, Hong Kong, 852, China
| | - Zhihao Zhang
- Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, 848300, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Josep Peñuelas
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, 08193, Barcelona, Catalonia, Spain; CREAF, Cerdanyola Del Vallès, 08193, Catalonia, Spain
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12
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Zheng Y, Zhao W, Chen A, Chen Y, Chen J, Zhu Z. Vegetation canopy structure mediates the response of gross primary production to environmental drivers across multiple temporal scales. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170439. [PMID: 38281630 DOI: 10.1016/j.scitotenv.2024.170439] [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: 10/29/2023] [Revised: 01/10/2024] [Accepted: 01/23/2024] [Indexed: 01/30/2024]
Abstract
Gross primary production (GPP) is a critical component of the global carbon cycle and plays a significant role in the terrestrial carbon budget. The impact of environmental factors on GPP can occur through both direct (by influencing photosynthetic efficiency) and indirect (through the modulation of vegetation structure) pathways, but the extent to which these mechanisms contribute has been seldom quantified. In this study, we used structural equation modeling and observations from the FLUXNET network to investigate the direct and indirect effects of environmental factors on terrestrial ecosystem GPP at multiple temporal scales. We found that canopy structure, represented by leaf area index (LAI), is a crucial intermediate factor in the GPP response to environmental drivers. Environmental factors affect GPP indirectly by altering canopy structure, and the relative proportion of indirect effects decreased with increasing LAI. The study also identified different effects of environmental factors on GPP across time scales. At the half-hourly time scale, radiation was the primary driver of GPP. In contrast, the influences of temperature and vapor pressure deficit took on greater prominence at longer time scales. About half of the total effect of temperature on GPP was indirect through the regulation of canopy structure, and the indirect effect increased with increasing time scale (GPPNT-based models: 0.135 (half-hourly) vs. 0.171 (daily) vs. 0.189 (weekly) vs. 0.217 (monthly); GPPDT-based models: 0.139 vs. 0.170 vs. 0.187 vs. 0.215; all values were reported in gC m-2 d-1 °C-1, P < 0.001); while the indirect effect of radiation on GPP was comparatively lower, accounting for less than a quarter of the total effect. Furthermore, we observed a direct, negative-to-positive impact of precipitation on GPP across timescales. These findings provide crucial information on the interplay between environmental factors and LAI on GPP and enable a deeper understanding of the driving mechanisms of GPP.
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Affiliation(s)
- Yaoyao Zheng
- School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen 518055, China; Key Laboratory of Earth Surface System and Human-Earth Relations, Ministry of Natural Resources of China, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
| | - Weiqing Zhao
- School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen 518055, China; Key Laboratory of Earth Surface System and Human-Earth Relations, Ministry of Natural Resources of China, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
| | - Anping Chen
- Department of Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, USA
| | - Yue Chen
- School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen 518055, China; Key Laboratory of Earth Surface System and Human-Earth Relations, Ministry of Natural Resources of China, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
| | - Jiana Chen
- School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen 518055, China; Key Laboratory of Earth Surface System and Human-Earth Relations, Ministry of Natural Resources of China, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
| | - Zaichun Zhu
- School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen 518055, China; Key Laboratory of Earth Surface System and Human-Earth Relations, Ministry of Natural Resources of China, Shenzhen Graduate School, Peking University, Shenzhen 518055, China.
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13
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Neyret M, Le Provost G, Boesing AL, Schneider FD, Baulechner D, Bergmann J, de Vries FT, Fiore-Donno AM, Geisen S, Goldmann K, Merges A, Saifutdinov RA, Simons NK, Tobias JA, Zaitsev AS, Gossner MM, Jung K, Kandeler E, Krauss J, Penone C, Schloter M, Schulz S, Staab M, Wolters V, Apostolakis A, Birkhofer K, Boch S, Boeddinghaus RS, Bolliger R, Bonkowski M, Buscot F, Dumack K, Fischer M, Gan HY, Heinze J, Hölzel N, John K, Klaus VH, Kleinebecker T, Marhan S, Müller J, Renner SC, Rillig MC, Schenk NV, Schöning I, Schrumpf M, Seibold S, Socher SA, Solly EF, Teuscher M, van Kleunen M, Wubet T, Manning P. A slow-fast trait continuum at the whole community level in relation to land-use intensification. Nat Commun 2024; 15:1251. [PMID: 38341437 PMCID: PMC10858939 DOI: 10.1038/s41467-024-45113-5] [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: 07/17/2023] [Accepted: 01/16/2024] [Indexed: 02/12/2024] Open
Abstract
Organismal functional strategies form a continuum from slow- to fast-growing organisms, in response to common drivers such as resource availability and disturbance. However, whether there is synchronisation of these strategies at the entire community level is unclear. Here, we combine trait data for >2800 above- and belowground taxa from 14 trophic guilds spanning a disturbance and resource availability gradient in German grasslands. The results indicate that most guilds consistently respond to these drivers through both direct and trophically mediated effects, resulting in a 'slow-fast' axis at the level of the entire community. Using 15 indicators of carbon and nutrient fluxes, biomass production and decomposition, we also show that fast trait communities are associated with faster rates of ecosystem functioning. These findings demonstrate that 'slow' and 'fast' strategies can be manifested at the level of whole communities, opening new avenues of ecosystem-level functional classification.
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Affiliation(s)
- Margot Neyret
- Senckenberg Biodiversity and Climate Research Centre, Frankfurt, Germany.
- Laboratoire d'Écologie Alpine, Université Grenoble Alpes - CNRS - Université Savoie Mont Blanc, Grenoble, France.
| | | | | | - Florian D Schneider
- Senckenberg Biodiversity and Climate Research Centre, Frankfurt, Germany
- ISOE - Institute for social-ecological research, Frankfurt am Main, Germany
| | - Dennis Baulechner
- Justus Liebig University, Department of Animal Ecology, Giessen, Germany
| | - Joana Bergmann
- Leibniz Center for Agricultural Landscape Research (ZALF), Müncheberg, Germany
| | - Franciska T de Vries
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Stefan Geisen
- Laboratory of Nematology, Wageningen University and Research, Wageningen, The Netherlands
| | - Kezia Goldmann
- Helmholtz Centre for Environmental Research (UFZ), Soil Ecology Department, Halle/Saale, Germany
| | - Anna Merges
- Senckenberg Biodiversity and Climate Research Centre, Frankfurt, Germany
| | - Ruslan A Saifutdinov
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
| | - Nadja K Simons
- Ecological Networks, Technical University Darmstadt, Darmstadt, Germany
- Applied Biodiversity Sciences, University of Würzburg, Würzburg, Germany
| | - Joseph A Tobias
- Department of Life Sciences, Imperial College London, Ascot, UK
| | - Andrey S Zaitsev
- Justus Liebig University, Department of Animal Ecology, Giessen, Germany
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
- Senckenberg Museum for Natural History Görlitz, Görlitz, Germany
| | - Martin M Gossner
- Forest Entomology, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
- Department of Environmental Systems Science, Institute of Terrestrial Ecosystems, ETH Zürich, Zürich, Switzerland
| | - Kirsten Jung
- Institut of Evolutionary Ecology and Conservation Genomics, Ulm University, Ulm, Germany
| | - Ellen Kandeler
- Department of Soil Biology, Institute of Soil Science and Land Evaluation, University of Hohenheim, Stuttgart, Germany
| | - Jochen Krauss
- Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, Würzburg, Germany
| | - Caterina Penone
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Michael Schloter
- Helmholtz Zentrum Muenchen, Research Unit for Comparative Microbiome Analysis, Oberschleissheim, Germany
- Chair of Environmental Microbiology, Technical University of Munich, Freising, Germany
| | - Stefanie Schulz
- Helmholtz Zentrum Muenchen, Research Unit for Comparative Microbiome Analysis, Oberschleissheim, Germany
| | - Michael Staab
- Ecological Networks, Technical University Darmstadt, Darmstadt, Germany
| | - Volkmar Wolters
- Justus Liebig University, Department of Animal Ecology, Giessen, Germany
| | - Antonios Apostolakis
- Department of Biogeochemical Processes, Max-Planck-Institute for Biogeochemistry, Jena, Germany
- Department of Crop Sciences, University of Göttingen, Göttingen, Germany
| | - Klaus Birkhofer
- Department of Ecology, Brandenburg University of Technology Cottbus-Senftenberg, Cottbus, Germany
| | - Steffen Boch
- Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
| | - Runa S Boeddinghaus
- Department of Soil Biology, Institute of Soil Science and Land Evaluation, University of Hohenheim, Stuttgart, Germany
- Department Plant Production and Production Related Environmental Protection, Center for Agricultural Technology Augustenberg (LTZ), Karlsruhe, Germany
| | - Ralph Bolliger
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Michael Bonkowski
- Terrestrial Ecology, Institute of Zoology, University of Cologne, Köln, Germany
| | - François Buscot
- Helmholtz Centre for Environmental Research (UFZ), Soil Ecology Department, Halle/Saale, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle - Jena-, Leipzig, Germany
| | - Kenneth Dumack
- Terrestrial Ecology, Institute of Zoology, University of Cologne, Köln, Germany
| | - Markus Fischer
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Huei Ying Gan
- Senckenberg Centre for Human Evolution and Palaeoenvironments Tübingen (SHEP), Tübingen, Germany
| | - Johannes Heinze
- Department of Biodiversity, Heinz Sielmann Foundation, Wustermark, Germany
| | - Norbert Hölzel
- Institute of Landscape Ecology, University of Münster, Münster, Germany
| | - Katharina John
- Justus Liebig University, Department of Animal Ecology, Giessen, Germany
| | - Valentin H Klaus
- Institute of Agricultural Sciences, ETH Zürich, Zürich, Switzerland
- Forage Production and Grassland Systems, Agroscope, Zürich, Switzerland
| | - Till Kleinebecker
- Institute for Landscape Ecology and Resources Management (ILR), Research Centre for BioSystems, Land Use and Nutrition (iFZ), Justus Liebig University Giessen, Giessen, Germany
- Centre for International Development and Environmental Research (ZEU), Justus Liebig University Giessen, Giessen, Germany
| | - Sven Marhan
- Department of Soil Biology, Institute of Soil Science and Land Evaluation, University of Hohenheim, Stuttgart, Germany
| | - Jörg Müller
- Department of Nature Conservation, Heinz Sielmann Foundation, Wustermark, Germany
| | - Swen C Renner
- Ornithology, Natural History Museum Vienna, Vienna, Autria, Germany
| | | | - Noëlle V Schenk
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Ingo Schöning
- Department of Biogeochemical Processes, Max-Planck-Institute for Biogeochemistry, Jena, Germany
| | - Marion Schrumpf
- Department of Biogeochemical Processes, Max-Planck-Institute for Biogeochemistry, Jena, Germany
| | - Sebastian Seibold
- Technical University of Munich, TUM School of Life Sciences, Freising, Germany
- TUD Dresden University of Technology, Forest Zoology, Tharandt, Germany
| | - Stephanie A Socher
- Paris Lodron University Salzburg, Department Environment and Biodiversity, Salzburg, Austria
| | - Emily F Solly
- Helmholtz Centre for Environmental Research (UFZ), Computation Hydrosystems Department, Leipzig, Germany
| | - Miriam Teuscher
- University of Göttingen, Centre of Biodiversity and Sustainable Land Use, Göttingen, Germany
| | - Mark van Kleunen
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, China
- Ecology, Department of Biology, University of Konstanz, Konstanz, Germany
| | - Tesfaye Wubet
- German Centre for Integrative Biodiversity Research (iDiv) Halle - Jena-, Leipzig, Germany
- Helmholtz Centre for Environmental Research (UFZ), Community Ecology Department, Halle/Saale, Germany
| | - Peter Manning
- Senckenberg Biodiversity and Climate Research Centre, Frankfurt, Germany.
- Department of Biological Sciences, University of Bergen, Bergen, Norway.
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14
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Wang Z, Li F, Wu F, Guo F, Gao W, Zhang Y, Yang Z. Environmental DNA and remote sensing datasets reveal the spatial distribution of aquatic insects in a disturbed subtropical river system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119972. [PMID: 38159308 DOI: 10.1016/j.jenvman.2023.119972] [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: 08/09/2023] [Revised: 12/04/2023] [Accepted: 12/25/2023] [Indexed: 01/03/2024]
Abstract
Biodiversity datasets with high spatial resolution are critical prerequisites for river protection and management decision-making. However, traditional morphological biomonitoring is inefficient and only provides several site estimates, and there is an urgent need for new approaches to predict biodiversity on fine spatial scales throughout the entire river systems. Here, we combined the environmental DNA (eDNA) and remote sensing (RS) technologies to develop a novel approach for predicting the spatial distribution of aquatic insects with high spatial resolution in a disturbed subtropical Dongjiang River system of southeast China. First, we screened thirteen RS-based vegetation indices that significantly correlated with the eDNA-inferred richness of aquatic insects. In particular, the green normalized difference vegetation index (GNDVI) and normalized difference red-edge2 (NDRE2) were closely related to eDNA-inferred richness. Second, using the gradient boosting decision tree, our data showed that the spatial pattern of eDNA-inferred richness could achieve a high spatial resolution to 500 m reach and accurate prediction of more than 80%, and the prediction efficiency of the headwater streams (Strahler stream order = 1) was slightly higher than the downstream (Strahler stream order >1). Third, using the random forest algorithm, the spatial distribution of aquatic insects could reach a prediction rate of over 70% for the presence or absence of specific genera. Overall, this study provides a new approach to achieving high spatial resolution prediction of the distribution of aquatic insects, which supports decision-making on river diversity protection under climate changes and human impacts.
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Affiliation(s)
- Zongyang Wang
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China
| | - Feilong Li
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Feifei Wu
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China
| | - Fen Guo
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China
| | - Wei Gao
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yuan Zhang
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Zhifeng Yang
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, China
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15
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Lamour J, Souza DC, Gimenez BO, Higuchi N, Chave J, Chambers J, Rogers A. Wood-density has no effect on stomatal control of leaf-level water use efficiency in an Amazonian forest. PLANT, CELL & ENVIRONMENT 2023; 46:3806-3821. [PMID: 37635450 DOI: 10.1111/pce.14704] [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: 03/24/2023] [Revised: 07/20/2023] [Accepted: 08/16/2023] [Indexed: 08/29/2023]
Abstract
Forest disturbances increase the proportion of fast-growing tree species compared to slow-growing ones. To understand their relative capacity for carbon uptake and their vulnerability to climate change, and to represent those differences in Earth system models, it is necessary to characterise the physiological differences in their leaf-level control of water use efficiency and carbon assimilation. We used wood density as a proxy for the fast-slow growth spectrum and tested the assumption that trees with a low wood density (LWD) have a lower water-use efficiency than trees with a high wood density (HWD). We selected 5 LWD tree species and 5 HWD tree species growing in the same location in an Amazonian tropical forest and measured in situ steady-state gas exchange on top-of-canopy leaves with parallel sampling and measurement of leaf mass area and leaf nitrogen content. We found that LWD species invested more nitrogen in photosynthetic capacity than HWD species, had higher photosynthetic rates and higher stomatal conductance. However, contrary to expectations, we showed that the stomatal control of the balance between transpiration and carbon assimilation was similar in LWD and HWD species and that they had the same dark respiration rates.
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Affiliation(s)
- Julien Lamour
- Department of Environmental & Climate Sciences, Brookhaven National Laboratory, Upton, New York, USA
- Evolution and Biological Diversity (EDB), CNRS/IRD/UPS, Toulouse, France
| | - Daisy C Souza
- National Institute of Amazonian Research (INPA), Forest Management Laboratory (LMF), Manaus, Amazonas, Brazil
| | - Bruno O Gimenez
- National Institute of Amazonian Research (INPA), Forest Management Laboratory (LMF), Manaus, Amazonas, Brazil
- Department of Geography, University of California, Berkeley, California, USA
| | - Niro Higuchi
- National Institute of Amazonian Research (INPA), Forest Management Laboratory (LMF), Manaus, Amazonas, Brazil
| | - Jérôme Chave
- Evolution and Biological Diversity (EDB), CNRS/IRD/UPS, Toulouse, France
| | - Jeffrey Chambers
- Department of Geography, University of California, Berkeley, California, USA
| | - Alistair Rogers
- Department of Environmental & Climate Sciences, Brookhaven National Laboratory, Upton, New York, USA
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16
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Sun DL, Yao BM, Yang G, Sun GX. Climate and soil properties regulate the vertical heterogeneity of minor and trace elements in the alpine topsoil of the Hengduan Mountains. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 899:165653. [PMID: 37474062 DOI: 10.1016/j.scitotenv.2023.165653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/17/2023] [Accepted: 07/17/2023] [Indexed: 07/22/2023]
Abstract
Soil minor and trace elements are vital regulators of ecological processes that sustain alpine ecosystem functions. In this study, the vertical pattern and driving factors of element concentrations in alpine soils of the Tibetan Plateau were investigated. Three snow mountains (Meili, Baima, and Haba) part of the Hengduan Mountain range, were selected as the study area to determine the vertical distribution of 12 typical elements (Cr, Ni, Cu, Fe, Mn, Zn, Cd, Pb, Ca, Sr, As, and Se) in topsoil with increasing and decreasing elevation, as well as the dominant driving factors of their spatial heterogeneity. Results showed that all elements, except Se, showed strong vertical heterogeneity, among which Cr, Ni, Cu, and Fe showed peak concentrations at 2700-3000 m; the highest concentrations of Mn and Zn were at 3200 m and 2700 m, with Cd and Pb at 2500 m. Ca and Sr levels gradually decreased with increasing elevation. According to the structural equation model and random forest analysis, the vertical heterogeneity of soil elements is directly regulated by the variability of climate and soil properties due to changes in elevation. A three-way PERMANOVA further quantized the contributions of climate and soil properties on vertical heterogeneity of all soil elements, which were 35.2 % and 50.5 %, respectively. This study used various statistical tools to reveal the dominant factors affecting the vertical heterogeneity of soil elements. These findings provided a scientific overview of element distribution on the Tibetan Plateau and significant references for the vertical distribution of elements in the topsoil of other snow mountains worldwide.
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Affiliation(s)
- Dong-Li Sun
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, the Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bao-Min Yao
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, the Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guang Yang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, the Chinese Academy of Sciences, Beijing 100085, China
| | - Guo-Xin Sun
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, the Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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17
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Wu X, Fu B, Wang S, Liu Y, Yao Y, Li Y, Xu Z, Liu J. Three main dimensions reflected by national SDG performance. Innovation (N Y) 2023; 4:100507. [PMID: 37744178 PMCID: PMC10514454 DOI: 10.1016/j.xinn.2023.100507] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 08/31/2023] [Indexed: 09/26/2023] Open
Abstract
Unraveling the complexity of the 17 interacting sustainable development goals (SDGs) is crucial for their achievement. Empirically revealing the dimensions of the SDGs helps generalize the dominant features of SDGs and better understand their drivers. Here, using a database of 166 countries' progress toward achieving each individual SDG, we found that about 70% of the variability of national SDG performance can be captured by three dimensions: socioeconomic development at the expense of resource and climate, the environment, and development at the expense of equality. Moreover, these dimensions are mainly affected by the economy; as gross domestic product (GDP) per capita increases, the first dimension increases monotonically, the environment dimension decreases and then increases, and the inequality dimension increases and then decreases. Our findings indicate a dim prospect of eventually achieving all SDGs because of the conflicts between economic growth and resource and climate goals under the current development paradigm, highlighting the importance of sustainable transformation.
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Affiliation(s)
- Xutong Wu
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Bojie Fu
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Shuai Wang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Yanxu Liu
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Ying Yao
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Yingjie Li
- Natural Capital Project, Stanford University, Stanford, CA 94305, USA
| | - Zhenci Xu
- Department of Geography, The University of Hong Kong, Hong Kong 999077, China
| | - Jianguo Liu
- Center for Systems Integration and Sustainability, Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48823, USA
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18
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Maitner B, Gallagher R, Svenning JC, Tietje M, Wenk EH, Eiserhardt WL. A global assessment of the Raunkiaeran shortfall in plants: geographic biases in our knowledge of plant traits. THE NEW PHYTOLOGIST 2023; 240:1345-1354. [PMID: 37369249 DOI: 10.1111/nph.18999] [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: 11/11/2022] [Accepted: 05/03/2023] [Indexed: 06/29/2023]
Abstract
This article is part of the Special Collection ‘Global plant diversity and distribution’. See https://www.newphytologist.org/global-plant-diversity for more details.
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Affiliation(s)
- Brian Maitner
- Department of Geography, University at Buffalo, 125a Wilkeson Quadrangle, Buffalo, NY, 14261, USA
| | - Rachael Gallagher
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - Jens-Christian Svenning
- Department of Biology, Center for Ecological Dynamics in a Novel Biosphere (ECONOVO) & Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Aarhus University, Ny Munkegade 114, DK-8000, Aarhus C, Denmark
| | - Melanie Tietje
- Section for Ecoinformatics and Biodiversity, Department of Biology, Aarhus University, Ny Munkegade 114, DK-8000, Aarhus C, Denmark
| | - Elizabeth H Wenk
- Evolution & Ecology Research Centre, School of Biological, Earth, and Environmental Sciences, UNSW Sydney, Sydney, NSW, 2033, Australia
| | - Wolf L Eiserhardt
- Section for Ecoinformatics and Biodiversity, Department of Biology, Aarhus University, Ny Munkegade 114, DK-8000, Aarhus C, Denmark
- Royal Botanic Gardens, Kew, Richmond, TW9 3AE, Surrey, UK
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19
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Futter MN, Dirnböck T, Forsius M, Bäck JK, Cools N, Diaz-Pines E, Dick J, Gaube V, Gillespie LM, Högbom L, Laudon H, Mirtl M, Nikolaidis N, Poppe Terán C, Skiba U, Vereecken H, Villwock H, Weldon J, Wohner C, Alam SA. Leveraging research infrastructure co-location to evaluate constraints on terrestrial carbon cycling in northern European forests. AMBIO 2023; 52:1819-1831. [PMID: 37725249 PMCID: PMC10562320 DOI: 10.1007/s13280-023-01930-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 07/03/2023] [Accepted: 08/28/2023] [Indexed: 09/21/2023]
Abstract
Integrated long-term, in-situ observations are needed to document ongoing environmental change, to "ground-truth" remote sensing and model outputs and to predict future Earth system behaviour. The scientific and societal value of in-situ observations increases with site representativeness, temporal duration, number of parameters measured and comparability within and across sites. Research Infrastructures (RIs) can support harmonised, cross-site data collection, curation and publication. Integrating RI networks through site co-location and standardised observation methods can help answers three questions about the terrestrial carbon sink: (i) What are present and future carbon sequestration rates in northern European forests? (ii) How are these rates controlled? (iii) Why do the observed patterns exist? Here, we present a conceptual model for RI co-location and highlight potential insights into the terrestrial carbon sink achievable when long-term in-situ Earth observation sites participate in multiple RI networks (e.g., ICOS and eLTER). Finally, we offer recommendations to promote RI co-location.
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Affiliation(s)
- Martyn N. Futter
- Institutionen för vatten och miljö, Lennart Hjelms Väg 9, Box 7050, 75007 Uppsala, Sweden
| | | | - Martin Forsius
- Finnish Environment Institute, Latokartanonkaari 11, 00790 Helsinki, Finland
| | | | | | - Eugenio Diaz-Pines
- Institute of Soil Research, University of Natural Resources and Life Sciences, Peter-Jordan-Straße 82, 1190 Vienna, Austria
| | - Jan Dick
- University of Helsinki, Helsinki, Finland
| | | | - Lauren M. Gillespie
- Institute of Soil Research (IBF), Peter-Jordan-Straße 82, 1190 Vienna, Austria
| | - Lars Högbom
- Skogforsk, Uppsala Science Park, 751 83 Uppsala, Sweden
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, 901 83 Umeå, Sweden
| | - Hjalmar Laudon
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, 901 83 Umeå, Sweden
| | | | | | | | - Ute Skiba
- UK Centre for Ecology & Hydrology, Bush Estate, Penicuik, EH26 0QB UK
| | - Harry Vereecken
- Agropshere Institute (IBG-3), Forschungszentrum Jülich Gmbh, 52425 Jülich, Germany
| | - Holger Villwock
- Institutionen för vatten och miljö, Lennart Hjelms Väg 9, Box 7050, 75007 Uppsala, Sweden
| | - James Weldon
- Institutionen för vatten och miljö, Lennart Hjelms Väg 9, Box 7050, 75007 Uppsala, Sweden
| | | | - Syed Ashraful Alam
- Department of Forest Sciences, University of Helsinki, Latokartanonkaari 7, 00014 Helsinki, Finland
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20
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Lang N, Jetz W, Schindler K, Wegner JD. A high-resolution canopy height model of the Earth. Nat Ecol Evol 2023; 7:1778-1789. [PMID: 37770546 PMCID: PMC10627820 DOI: 10.1038/s41559-023-02206-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 08/24/2023] [Indexed: 09/30/2023]
Abstract
The worldwide variation in vegetation height is fundamental to the global carbon cycle and central to the functioning of ecosystems and their biodiversity. Geospatially explicit and, ideally, highly resolved information is required to manage terrestrial ecosystems, mitigate climate change and prevent biodiversity loss. Here we present a comprehensive global canopy height map at 10 m ground sampling distance for the year 2020. We have developed a probabilistic deep learning model that fuses sparse height data from the Global Ecosystem Dynamics Investigation (GEDI) space-borne LiDAR mission with dense optical satellite images from Sentinel-2. This model retrieves canopy-top height from Sentinel-2 images anywhere on Earth and quantifies the uncertainty in these estimates. Our approach improves the retrieval of tall canopies with typically high carbon stocks. According to our map, only 5% of the global landmass is covered by trees taller than 30 m. Further, we find that only 34% of these tall canopies are located within protected areas. Thus, the approach can serve ongoing efforts in forest conservation and has the potential to foster advances in climate, carbon and biodiversity modelling.
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Affiliation(s)
- Nico Lang
- EcoVision Lab, Photogrammetry and Remote Sensing, ETH Zürich, Zürich, Switzerland.
- Department of Computer Science, University of Copenhagen, Copenhagen, Denmark.
| | - Walter Jetz
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
| | - Konrad Schindler
- EcoVision Lab, Photogrammetry and Remote Sensing, ETH Zürich, Zürich, Switzerland
| | - Jan Dirk Wegner
- EcoVision Lab, Photogrammetry and Remote Sensing, ETH Zürich, Zürich, Switzerland.
- Institute for Computational Science, University of Zurich, Zürich, Switzerland.
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21
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Yang Y, Shi Y, Wei X, Han J, Wang J, Mu C, Zhang J. Changes in mass allocation play a more prominent role than morphology in resource acquisition of the rhizomatous Leymus chinensis under drought stress. ANNALS OF BOTANY 2023; 132:121-132. [PMID: 37279964 PMCID: PMC10550271 DOI: 10.1093/aob/mcad073] [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: 12/08/2022] [Accepted: 06/05/2023] [Indexed: 06/08/2023]
Abstract
BACKGROUND AND AIMS Plants can respond to drought by changing their relative investments in the biomass and morphology of each organ. The aims of this study were to quantify the relative contribution of changes in morphology vs. allocation and determine how they affect each other. These results should help us understand the mechanisms that plants use to respond to drought events. METHODS In a glasshouse experiment, we applied a drought treatment (well-watered vs. drought) at early and late stages of plant growth, leading to four treatment combinations (well-watered in both early and late periods, WW; drought in the early period and well-watered in the late period, DW; well-watered in the early period and drought in the late period, WD; drought in both early and late periods, DD). We used the variance partitioning method to compare the contribution of organ (leaf and root) biomass allocation and morphology to the leaf area ratio, root length ratio and root area ratio, for the rhizomatous grass Leymus chinensis (Trin.) Tzvelev. KEY RESULTS Compared with the continuously well-watered treatment, the leaf area ratio, root length ratio and root area ratio showed increasing trends under various drought treatments. The contribution of leaf mass allocation to leaf area ratio differed among the drought treatments and was 2.1- to 5.3-fold greater than leaf morphology, and the contribution of root mass allocation to root length ratio was ~2-fold greater than that of root morphology. In contrast, root morphology contributed more to the root area ratio than biomass allocation under drought in both the early and late periods. There was a negative correlation between the ratio of leaf mass fraction to root mass fraction and the ratio of specific leaf area to specific root length (or specific root area). CONCLUSIONS This study suggested that organ biomass allocation drove a larger proportion of variation than morphological traits for the absorption of resources in this rhizomatous grass. These findings should help us understand the adaptive mechanisms of plants when they are confronted with drought stress.
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Affiliation(s)
- Yuheng Yang
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun 130024, China
| | - Yujie Shi
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun 130024, China
| | - Xiaowei Wei
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun 130024, China
| | - Jiayu Han
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun 130024, China
| | - Junfeng Wang
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun 130024, China
| | - Chunsheng Mu
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun 130024, China
| | - Jinwei Zhang
- Institute of Grassland Science, Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun 130024, China
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22
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Xu X, Liu J, Jiao F, Zhang K, Yang Y, Qiu J, Zhu Y, Lin N, Zou C. Spatial variations and mechanisms for the stability of water use efficiency in China. FRONTIERS IN PLANT SCIENCE 2023; 14:1254395. [PMID: 37810375 PMCID: PMC10552151 DOI: 10.3389/fpls.2023.1254395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/01/2023] [Indexed: 10/10/2023]
Abstract
A clearer understanding of the stability of water use efficiency (WUE) and its driving factors contributes to improving water use efficiency and strengthening water resource management. However, the stability of WUE is unclear. Based on the EEMD method, this study analyses the spatial variations and mechanisms for the stability of WUE in China, especially in the National Forest Protection Project (NFPP) areas. It is found that the stable WUE was dominated by non-significant trends and increasing trends in China, accounting for 33.59% and 34.19%, respectively. The non-significant trend of stable WUE was mainly located in the Three-North shelterbelt program area, and the increasing trend of stable WUE was in Huaihe and Taihu, Taihang Mountains, and Pearl River shelterbelt program areas. Precipitation and soil moisture promoted the stable WUE in these project areas. The unstable WUE was dominated by positive reversals or negative reversals of WUE trends. The positive reversals of unstable WUE were mainly located in the Yellow River shelterbelt program areas, which was promoted by temperature and radiation, while the negative reversals of unstable WUE were mainly distributed in the Yangtze River and Liaohe shelterbelt program areas, which were mainly induced by saturation water vapor pressure difference (VPD). Our results highlight that some ecological restoration programs need to be improved to cope with the negative climate impact on the stability of WUE.
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Affiliation(s)
- Xiaojuan Xu
- Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Jing Liu
- Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Fusheng Jiao
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Kun Zhang
- Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Yue Yang
- Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Jie Qiu
- Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Yingying Zhu
- Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Naifeng Lin
- Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Changxin Zou
- Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
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23
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Chu H, Christianson DS, Cheah YW, Pastorello G, O'Brien F, Geden J, Ngo ST, Hollowgrass R, Leibowitz K, Beekwilder NF, Sandesh M, Dengel S, Chan SW, Santos A, Delwiche K, Yi K, Buechner C, Baldocchi D, Papale D, Keenan TF, Biraud SC, Agarwal DA, Torn MS. AmeriFlux BASE data pipeline to support network growth and data sharing. Sci Data 2023; 10:614. [PMID: 37696825 PMCID: PMC10495345 DOI: 10.1038/s41597-023-02531-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 08/31/2023] [Indexed: 09/13/2023] Open
Abstract
AmeriFlux is a network of research sites that measure carbon, water, and energy fluxes between ecosystems and the atmosphere using the eddy covariance technique to study a variety of Earth science questions. AmeriFlux's diversity of ecosystems, instruments, and data-processing routines create challenges for data standardization, quality assurance, and sharing across the network. To address these challenges, the AmeriFlux Management Project (AMP) designed and implemented the BASE data-processing pipeline. The pipeline begins with data uploaded by the site teams, followed by the AMP team's quality assurance and quality control (QA/QC), ingestion of site metadata, and publication of the BASE data product. The semi-automated pipeline enables us to keep pace with the rapid growth of the network. As of 2022, the AmeriFlux BASE data product contains 3,130 site years of data from 444 sites, with standardized units and variable names of more than 60 common variables, representing the largest long-term data repository for flux-met data in the world. The standardized, quality-ensured data product facilitates multisite comparisons, model evaluations, and data syntheses.
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Affiliation(s)
- Housen Chu
- Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
| | | | - You-Wei Cheah
- Scientific Data Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Gilberto Pastorello
- Scientific Data Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Fianna O'Brien
- Scientific Data Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Joshua Geden
- Scientific Data Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Sy-Toan Ngo
- Scientific Data Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Rachel Hollowgrass
- Department of Environmental Science, Policy, and Management, University of California Berkeley, Berkeley, CA, 94720, USA
| | | | - Norman F Beekwilder
- Department of Computer Science, University of Virginia, Charlottesville, VA, 22903, USA
| | - Megha Sandesh
- Scientific Data Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Sigrid Dengel
- Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Stephen W Chan
- Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - André Santos
- Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Kyle Delwiche
- Department of Environmental Science, Policy, and Management, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Koong Yi
- Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Christin Buechner
- Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Dennis Baldocchi
- Department of Environmental Science, Policy, and Management, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Dario Papale
- DIBAF, University of Tuscia, Viterbo, 01100, Italy
- Euro-Mediterranean Center on Climate Change CMCC IAFES, Viterbo, 01100, Italy
| | - Trevor F Keenan
- Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Environmental Science, Policy, and Management, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Sébastien C Biraud
- Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Deborah A Agarwal
- Scientific Data Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Margaret S Torn
- Climate & Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Energy and Resources Group, University of California Berkeley, Berkeley, CA, 94720, USA
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24
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Graf A, Wohlfahrt G, Aranda-Barranco S, Arriga N, Brümmer C, Ceschia E, Ciais P, Desai AR, Di Lonardo S, Gharun M, Grünwald T, Hörtnagl L, Kasak K, Klosterhalfen A, Knohl A, Kowalska N, Leuchner M, Lindroth A, Mauder M, Migliavacca M, Morel AC, Pfennig A, Poorter H, Terán CP, Reitz O, Rebmann C, Sanchez-Azofeifa A, Schmidt M, Šigut L, Tomelleri E, Yu K, Varlagin A, Vereecken H. Joint optimization of land carbon uptake and albedo can help achieve moderate instantaneous and long-term cooling effects. COMMUNICATIONS EARTH & ENVIRONMENT 2023; 4:298. [PMID: 38665193 PMCID: PMC11041785 DOI: 10.1038/s43247-023-00958-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 08/07/2023] [Indexed: 04/28/2024]
Abstract
Both carbon dioxide uptake and albedo of the land surface affect global climate. However, climate change mitigation by increasing carbon uptake can cause a warming trade-off by decreasing albedo, with most research focusing on afforestation and its interaction with snow. Here, we present carbon uptake and albedo observations from 176 globally distributed flux stations. We demonstrate a gradual decline in maximum achievable annual albedo as carbon uptake increases, even within subgroups of non-forest and snow-free ecosystems. Based on a paired-site permutation approach, we quantify the likely impact of land use on carbon uptake and albedo. Shifting to the maximum attainable carbon uptake at each site would likely cause moderate net global warming for the first approximately 20 years, followed by a strong cooling effect. A balanced policy co-optimizing carbon uptake and albedo is possible that avoids warming on any timescale, but results in a weaker long-term cooling effect.
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Affiliation(s)
- Alexander Graf
- Institute of Bio- and Geosciences: Agrosphere (IBG-3), Research Centre Jülich, Jülich, Germany
| | - Georg Wohlfahrt
- Universität Innsbruck, Institut für Ökologie, Innsbruck, Austria
| | - Sergio Aranda-Barranco
- Andalusian Institute for Earth System Research (IISTA-CEAMA), 18071 Granada, Spain
- Departament of Ecology, University of Granada, 18071 Granada, Spain
| | - Nicola Arriga
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Christian Brümmer
- Thünen Institute of Climate-Smart Agriculture, Braunschweig, Germany
| | - Eric Ceschia
- CESBIO, Université de Toulouse, CNES/CNRS/INRA/IRD/UPS, Toulouse, France
| | - Philippe Ciais
- Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, 91191 France
| | - Ankur R. Desai
- Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, Madison, WI USA
| | - Sara Di Lonardo
- Research Institute on Terrestrial Ecosystems-National Research Council (IRET-CNR), Sesto Fiorentino, Italy
| | - Mana Gharun
- Institute of Landscape Ecology, University of Münster, Münster, Germany
| | - Thomas Grünwald
- Technische Universität Dresden, Institute of Hydrology and Meteorology, Dresden, Germany
| | - Lukas Hörtnagl
- Department of Environmental Systems Science, ETH Zürich, Universitätstrasse 2, Zürich, 8092 Switzerland
| | - Kuno Kasak
- Department of Geography, University of Tartu, Tartu, Estonia
| | | | | | - Natalia Kowalska
- Global Change Research Institute CAS, Bělidla 986/4a, CZ-60300 Brno, Czech Republic
| | - Michael Leuchner
- Physical Geography and Climatology, Institute of Geography, RWTH Aachen University, Aachen, Germany
| | - Anders Lindroth
- Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden
| | - Matthias Mauder
- Technische Universität Dresden, Institute of Hydrology and Meteorology, Dresden, Germany
| | | | - Alexandra C. Morel
- Division of Energy, Environment and Society, University of Dundee, Dundee, UK
| | - Andreas Pfennig
- Department of Chemical Engineering, University of Liège, Liège, Belgium
| | - Hendrik Poorter
- Institute of Bio- and Geosciences: Plant Sciences (IBG-2), Research Centre Jülich, Jülich, Germany
- Department of Natural Sciences, Macquarie University, North Ryde, NSW 2109 Australia
| | - Christian Poppe Terán
- Institute of Bio- and Geosciences: Agrosphere (IBG-3), Research Centre Jülich, Jülich, Germany
| | - Oliver Reitz
- Physical Geography and Climatology, Institute of Geography, RWTH Aachen University, Aachen, Germany
| | - Corinna Rebmann
- Department Computational Hydrosystems, Helmholtz Centre for Environmental Research (UFZ), Permoserstr. 15, 04318 Leipzig, Germany
| | - Arturo Sanchez-Azofeifa
- Earth and Atmospheric Sciences Department, Centre for Earth Observation Sciences (CEOS), Edmonton, AB Canada
| | - Marius Schmidt
- Institute of Bio- and Geosciences: Agrosphere (IBG-3), Research Centre Jülich, Jülich, Germany
| | - Ladislav Šigut
- Global Change Research Institute CAS, Bělidla 986/4a, CZ-60300 Brno, Czech Republic
| | - Enrico Tomelleri
- Faculty of Agricultural, Environmental and Food Sciences, Free University of Bolzano, Piazza Università 5, 39100 Bolzano, Italy
| | - Ke Yu
- Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, 91191 France
| | - Andrej Varlagin
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 119071 Leninsky pr.33, Moscow, Russia
| | - Harry Vereecken
- Institute of Bio- and Geosciences: Agrosphere (IBG-3), Research Centre Jülich, Jülich, Germany
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25
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Gomarasca U, Migliavacca M, Kattge J, Nelson JA, Niinemets Ü, Wirth C, Cescatti A, Bahn M, Nair R, Acosta ATR, Arain MA, Beloiu M, Black TA, Bruun HH, Bucher SF, Buchmann N, Byun C, Carrara A, Conte A, da Silva AC, Duveiller G, Fares S, Ibrom A, Knohl A, Komac B, Limousin JM, Lusk CH, Mahecha MD, Martini D, Minden V, Montagnani L, Mori AS, Onoda Y, Peñuelas J, Perez-Priego O, Poschlod P, Powell TL, Reich PB, Šigut L, van Bodegom PM, Walther S, Wohlfahrt G, Wright IJ, Reichstein M. Leaf-level coordination principles propagate to the ecosystem scale. Nat Commun 2023; 14:3948. [PMID: 37402725 DOI: 10.1038/s41467-023-39572-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 06/15/2023] [Indexed: 07/06/2023] Open
Abstract
Fundamental axes of variation in plant traits result from trade-offs between costs and benefits of resource-use strategies at the leaf scale. However, it is unclear whether similar trade-offs propagate to the ecosystem level. Here, we test whether trait correlation patterns predicted by three well-known leaf- and plant-level coordination theories - the leaf economics spectrum, the global spectrum of plant form and function, and the least-cost hypothesis - are also observed between community mean traits and ecosystem processes. We combined ecosystem functional properties from FLUXNET sites, vegetation properties, and community mean plant traits into three corresponding principal component analyses. We find that the leaf economics spectrum (90 sites), the global spectrum of plant form and function (89 sites), and the least-cost hypothesis (82 sites) all propagate at the ecosystem level. However, we also find evidence of additional scale-emergent properties. Evaluating the coordination of ecosystem functional properties may aid the development of more realistic global dynamic vegetation models with critical empirical data, reducing the uncertainty of climate change projections.
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Affiliation(s)
- Ulisse Gomarasca
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany.
| | | | - Jens Kattge
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
| | - Jacob A Nelson
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
| | - Ülo Niinemets
- Chair of Plant and Crop Science, Estonian University of Life Sciences, Kreutzwaldi 1, 51006, Tartu, Estonia
| | - Christian Wirth
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
- Institute of Biology, Leipzig University, Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena Leipzig, Leipzig, Germany
| | | | - Michael Bahn
- Universität Innsbruck, Institut für Ökologie, Innsbruck, Austria
| | - Richard Nair
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
- Discipline of Botany, School of Natural Sciences Trinity College Dublin, Dublin, Ireland
| | - Alicia T R Acosta
- Dipartimento di Scienze - Università Roma TRE - V.le Marconi 446, 00146, Roma, Italy
| | - M Altaf Arain
- School of Earth, Environment & Society and McMaster Centre for Climate Change, McMaster University, Hamilton, ON, Canada
| | - Mirela Beloiu
- Institute of Terrestrial Ecosystems, ETH Zurich, Zurich, Switzerland
| | - T Andrew Black
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada
| | - Hans Henrik Bruun
- Department of Biology, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen Ø, Denmark
| | - Solveig Franziska Bucher
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena Leipzig, Leipzig, Germany
- Institute of Ecology and Evolution - Friedrich Schiller University Jena, Philosophenweg 16, 07743, Jena, Germany
| | - Nina Buchmann
- Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland
| | - Chaeho Byun
- Department of Biological Sciences, Andong National University, Andong, 36729, Republic of Korea
| | - Arnaud Carrara
- Fundación Centro de Estudios Ambientales del Mediterráneo (CEAM), Paterna, Spain
| | - Adriano Conte
- National Research Council of Italy (CNR), Institute for Sustainable Plant Protection (IPSP), Metaponto, 75012, Italy
| | - Ana C da Silva
- Santa Catarina State University, Agroveterinary Center, Forestry Department, Av Luiz de Camões, 2090, Conta Dinheiro, 88.520-000, Lages, SC, Brazil
| | - Gregory Duveiller
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
| | - Silvano Fares
- National Research Council of Italy (CNR), Institute for Agriculture and Forestry Systems in the Mediterranean (ISAFOM), Naples, 80055, Italy
| | - Andreas Ibrom
- Technical University of Denmark (DTU), Environmental Engineering and Resource Management, Bygningstorvet 115, 2800 Kgs., Lyngby, Denmark
| | - Alexander Knohl
- Bioclimatology, University of Göttingen, Büsgenweg 2, 37077, Göttingen, Germany
| | - Benjamin Komac
- Andorra Research + Innovation; Avinguda Rocafort 21-23, Edifici Molí, 3r pis, AD600, Sant Julià de Lòria, Andorra
| | | | - Christopher H Lusk
- Environmenal Research Institute, University of Waikato, Private Bag, 3105, Hamilton, New Zealand
| | - Miguel D Mahecha
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena Leipzig, Leipzig, Germany
- Remote Sensing Centre for Earth System Research, Leipzig University, 04103, Leipzig, Germany
| | - David Martini
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
| | - Vanessa Minden
- Department of Biology, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussel, Belgium
| | - Leonardo Montagnani
- Faculty of Science and Technology, Free University of Bolzano, Piazza Università 5, 39100, Bolzano, Italy
| | - Akira S Mori
- Research Center for Advanced Science and Technology, the University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo, 153-8904, Japan
| | - Yusuke Onoda
- Graduate School of Agriculture, Kyoto University, Oiwake, Kitashirakawa, Kyoto, 606-8502, Japan
| | - Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Barcelona, 08193, Catalonia, Spain
- CREAF, Cerdanyola del Vallès, Barcelona, 08193, Catalonia, Spain
| | - Oscar Perez-Priego
- Department of Forestry Engineering, University of Córdoba, Edif. Leonardo da Vinci, Campus de Rabanales s/n, 14071, Córdoba, Spain
| | - Peter Poschlod
- Ecology and Conservation Biology, Institute of Plant Sciences - Faculty of Biology and Preclinical Medicine - University of Regensburg, Universitaetsstrasse 31, D-93053, Regensburg, Germany
| | - Thomas L Powell
- The Department of Earth and Environmental Systems, The University of the South, Sewanee, TN, USA
| | - Peter B Reich
- Department of Forest Resources, University of Minnesota, St. Paul, MN, 55108, USA
- Institute for Global Change Biology, and School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, 48109, USA
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2753, Australia
| | - Ladislav Šigut
- Department of Matter and Energy Fluxes, Global Change Research Institute of the Czech Academy of Sciences, Bělidla 986/4a, 603 00, Brno, Czech Republic
| | - Peter M van Bodegom
- Institute of Environmental Sciences, Leiden University, Einsteinweg 2, 2333 CC, Leiden, the Netherlands
| | - Sophia Walther
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
| | - Georg Wohlfahrt
- Universität Innsbruck, Institut für Ökologie, Innsbruck, Austria
| | - Ian J Wright
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2753, Australia
- School of Natural Sciences, Macquarie University, Macquarie Park, NSW, 2109, Australia
| | - Markus Reichstein
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07745, Jena, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena Leipzig, Leipzig, Germany
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26
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Kashyap R, Kuttippurath J, Kumar P. Browning of vegetation in efficient carbon sink regions of India during the past two decades is driven by climate change and anthropogenic intrusions. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 336:117655. [PMID: 36898237 DOI: 10.1016/j.jenvman.2023.117655] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/25/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Accurate estimation of carbon cycle is a challenging task owing to the complexity and heterogeneity of ecosystems. Carbon Use Efficiency (CUE) is a metric to define the ability of vegetation to sequester carbon from the atmosphere. It is key to understand the carbon sink and source pathways of ecosystems. Here, we quantify CUE using remote sensing measurements to examine its variability, drivers and underlying mechanisms in India for the period 2000-2019, by applying the principal component analyses (PCA), multiple linear regression (MLR) and causal discovery. Our analysis shows that the forests in the hilly regions (HR) and northeast (NE), and croplands in the western areas of South India (SI) exhibit high (>0.6) CUE. The northwest (NW), Indo-Gangetic plain (IGP) and some areas in Central India (CI) show low (<0.3) CUE. In general, the water availability as soil moisture (SM) and precipitation (P) promote higher CUE, but higher temperature (T) and air organic carbon content (AOCC) reduce CUE. It is found that SM has the strongest relative influence (33%) on CUE, followed by P. Also, SM has a direct causal link with all drivers and CUE; reiterating its importance in driving vegetation carbon dynamics (VCD) for the cropland dominated India. The long-term analysis reveals that the low CUE regions in NW (moisture induced greening) and IGP (irrigation induced agricultural boom) have an increasing trend in productivity (greening). However, the high CUE regions in NE (deforestation and extreme events) and SI (warming induced moisture stress) exhibit a decreasing trend in productivity (browning), which is a great concern. Our study, therefore, provides new insights on the rate of carbon allocation and the need of proper planning for maintaining balance in the terrestrial carbon cycle. This is particularly important in the context of drafting policy decisions for the mitigation of climate change, food security and sustainability.
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Affiliation(s)
- Rahul Kashyap
- CORAL, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | | | - Pankaj Kumar
- CORAL, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
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27
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Estrada JS, Fuentes A, Reszka P, Auat Cheein F. Machine learning assisted remote forestry health assessment: a comprehensive state of the art review. FRONTIERS IN PLANT SCIENCE 2023; 14:1139232. [PMID: 37332724 PMCID: PMC10272373 DOI: 10.3389/fpls.2023.1139232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 05/08/2023] [Indexed: 06/20/2023]
Abstract
Forests are suffering water stress due to climate change; in some parts of the globe, forests are being exposed to the highest temperatures historically recorded. Machine learning techniques combined with robotic platforms and artificial vision systems have been used to provide remote monitoring of the health of the forest, including moisture content, chlorophyll, and nitrogen estimation, forest canopy, and forest degradation, among others. However, artificial intelligence techniques evolve fast associated with the computational resources; data acquisition, and processing change accordingly. This article is aimed at gathering the latest developments in remote monitoring of the health of the forests, with special emphasis on the most important vegetation parameters (structural and morphological), using machine learning techniques. The analysis presented here gathered 108 articles from the last 5 years, and we conclude by showing the newest developments in AI tools that might be used in the near future.
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Affiliation(s)
- Juan Sebastián Estrada
- Department of Electronic Engineering, Universidad Tecnica Federico, Santamaria, Valparaíso, Chile
| | - Andrés Fuentes
- Department of Industrial Engeneering, Universidad Tecnica Federica, Santamaria, Valparaíso, Chile
| | - Pedro Reszka
- Faculty on Engineering and Science, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Fernando Auat Cheein
- Department of Electronic Engineering, Universidad Tecnica Federico, Santamaria, Valparaíso, Chile
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28
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Pan Y, García-Girón J, Iversen LL. Global change and plant-ecosystem functioning in freshwaters. TRENDS IN PLANT SCIENCE 2023; 28:646-660. [PMID: 36628654 DOI: 10.1016/j.tplants.2022.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 05/13/2023]
Abstract
Freshwater ecosystems are of worldwide importance for maintaining biodiversity and sustaining the provision of a myriad of ecosystem services to modern societies. Plants, one of the most important components of these ecosystems, are key to water nutrient removal, carbon storage, and food provision. Understanding how the functional connection between freshwater plants and ecosystems is affected by global change will be key to our ability to predict future changes in freshwater systems. Here, we synthesize global plant responses, adaptations, and feedbacks to present-day and future freshwater environments through trait-based approaches, from single individuals to entire communities. We outline the transdisciplinary knowledge benchmarks needed to further understand freshwater plant biodiversity and the fundamental services they provide.
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Affiliation(s)
- Yingji Pan
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102 Changchun, China; Institute of Environmental Sciences (CML), Leiden University, Einsteinweg 2, 2333 CC Leiden, The Netherlands.
| | - Jorge García-Girón
- Geography Research Unit, University of Oulu, PO Box 3000, FI-90014 Oulu, Finland; Department of Biodiversity and Environmental Management, University of León, Campus de Vegazana, 24007 León, Spain
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29
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Zhou L, Wang S. The bright side of ecological stressors. Trends Ecol Evol 2023; 38:568-578. [PMID: 36906435 DOI: 10.1016/j.tree.2023.01.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 01/09/2023] [Accepted: 01/19/2023] [Indexed: 03/12/2023]
Abstract
Ecological stressors are considered to negatively affect biological systems; however, corresponding responses to stressors can be complex, depending on the ecological functions and the number and duration of the stressors. Mounting evidence indicates potential benefits of stressors. Here, we develop an integrative framework to understand stressor-induced benefits by clarifying three categories of mechanisms: seesaw effects, cross-tolerance, and memory effects. These mechanisms operate across various organizational levels (e.g., individual, population, community) and can be extended to an evolutionary context. One remaining challenge is to develop scaling approaches for linking stressor-induced benefits across organizational levels. Our framework provides a novel platform for predicting the consequences of global environmental changes and informing management strategies in conservation and restoration practices.
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Affiliation(s)
- Libin Zhou
- Institute of Ecology, Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, 100871 Beijing, China
| | - Shaopeng Wang
- Institute of Ecology, Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, 100871 Beijing, China.
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30
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Lamour J, Davidson KJ, Ely KS, Le Moguédec G, Anderson JA, Li Q, Calderón O, Koven CD, Wright SJ, Walker AP, Serbin SP, Rogers A. The effect of the vertical gradients of photosynthetic parameters on the CO 2 assimilation and transpiration of a Panamanian tropical forest. THE NEW PHYTOLOGIST 2023; 238:2345-2362. [PMID: 36960539 DOI: 10.1111/nph.18901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 03/14/2023] [Indexed: 05/19/2023]
Abstract
Terrestrial biosphere models (TBMs) include the representation of vertical gradients in leaf traits associated with modeling photosynthesis, respiration, and stomatal conductance. However, model assumptions associated with these gradients have not been tested in complex tropical forest canopies. We compared TBM representation of the vertical gradients of key leaf traits with measurements made in a tropical forest in Panama and then quantified the impact of the observed gradients on simulated canopy-scale CO2 and water fluxes. Comparison between observed and TBM trait gradients showed divergence that impacted canopy-scale simulations of water vapor and CO2 exchange. Notably, the ratio between the dark respiration rate and the maximum carboxylation rate was lower near the ground than at the top-of-canopy, leaf-level water-use efficiency was markedly higher at the top-of-canopy, and the decrease in maximum carboxylation rate from the top-of-canopy to the ground was less than TBM assumptions. The representation of the gradients of leaf traits in TBMs is typically derived from measurements made within-individual plants, or, for some traits, assumed constant due to a lack of experimental data. Our work shows that these assumptions are not representative of the trait gradients observed in species-rich, complex tropical forests.
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Affiliation(s)
- Julien Lamour
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Kenneth J Davidson
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
- Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY, 11974, USA
| | - Kim S Ely
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Gilles Le Moguédec
- AMAP, Université Montpellier, INRAE, Cirad CNRS, IRD, Montpellier, 34000, France
| | - Jeremiah A Anderson
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Qianyu Li
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Osvaldo Calderón
- Smithsonian Tropical Research Institute, Balboa, 0843-03092, Republic of Panama
| | - Charles D Koven
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - S Joseph Wright
- Smithsonian Tropical Research Institute, Balboa, 0843-03092, Republic of Panama
| | - Anthony P Walker
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Shawn P Serbin
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Alistair Rogers
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
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31
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Li C, Miao L, Adyel TM, Huang W, Wang J, Wu J, Hou J, Wang Z. Eukaryotes contribute more than bacteria to the recovery of freshwater ecosystem functions under different drought durations. Environ Microbiol 2023. [PMID: 36916068 DOI: 10.1111/1462-2920.16370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 03/10/2023] [Indexed: 03/16/2023]
Abstract
Global climate change mostly impacts river ecosystems by affecting microbial biodiversity and ecological functions. Considering the high functional redundancy of microorganisms, the unknown relationship between biodiversity and ecosystem functions obstructs river ecological research, especially under the influence of increasing weather extremes, such as in intermittent rivers and ephemeral streams (IRES). Herein, dry-wet alternation experiments were conducted in artificial stream channels for 25 and 90 days of drought, both followed by 20 days of rewetting. The dynamic recovery of microbial biodiversity and ecosystem functions (represented by ecosystem metabolism and denitrification rate) were determined to analyse biodiversity-ecosystem-function (BEF) relationships after different drought durations. There was a significant difference between bacterial and eukaryotic biodiversity recovery after drought. Eukaryotic biodiversity was more sensitive to drought duration than bacterial, and the eukaryotic network was more stable under dry-wet alternations. Based on the establishment of partial least squares path models, we found that eukaryotic biodiversity has a stronger effect on ecosystem functions than bacteria after long-term drought. Indeed, this work represents a significant step forward for further research on the ecosystem functions of IRES, especially emphasizing the importance of eukaryotic biodiversity in the BEF relationship.
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Affiliation(s)
- Chaoran Li
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 210098, Nanjing, People's Republic of China
| | - Lingzhan Miao
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 210098, Nanjing, People's Republic of China
| | - Tanveer M Adyel
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Melbourne, Victoria, Australia
- STEM, University of South Australia, Mawson Lakes Campus, 5095, Mawson, Australia
| | - Wei Huang
- China Institute of Water Resources and Hydropower Research, 100038, Beijing, People's Republic of China
| | - Jianjun Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
| | - Jun Wu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 210098, Nanjing, People's Republic of China
| | - Jun Hou
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 210098, Nanjing, People's Republic of China
| | - Zhiyuan Wang
- Center for Eco-Environmental Research, Nanjing Hydraulic Research Institute, National Energy Administration, Ministry of Transport, Ministry of Water Resources, 210029, Nanjing, China
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32
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Yan P, He N, Yu K, Xu L, Van Meerbeek K. Integrating multiple plant functional traits to predict ecosystem productivity. Commun Biol 2023; 6:239. [PMID: 36869238 PMCID: PMC9984401 DOI: 10.1038/s42003-023-04626-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 02/23/2023] [Indexed: 03/05/2023] Open
Abstract
Quantifying and predicting variation in gross primary productivity (GPP) is important for accurate assessment of the ecosystem carbon budget under global change. Scaling traits to community scales for predicting ecosystem functions (i.e., GPP) remain challenging, while it is promising and well appreciated with the rapid development of trait-based ecology. In this study, we aim to integrate multiple plant traits with the recently developed trait-based productivity (TBP) theory, verify it via Bayesian structural equation modeling (SEM) and complementary independent effect analysis. We further distinguish the relative importance of different traits in explaining the variation in GPP. We apply the TBP theory based on plant community traits to a multi-trait dataset containing more than 13,000 measurements of approximately 2,500 species in Chinese forest and grassland systems. Remarkably, our SEM accurately predicts variation in annual and monthly GPP across China (R2 values of 0.87 and 0.73, respectively). Plant community traits play a key role. This study shows that integrating multiple plant functional traits into the TBP theory strengthens the quantification of ecosystem primary productivity variability and further advances understanding of the trait-productivity relationship. Our findings facilitate integration of the growing plant trait data into future ecological models.
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Affiliation(s)
- Pu Yan
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
- Division Forest, Nature and Landscape, Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
| | - Nianpeng He
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.
- Center for Ecological Research, Northeast Forestry University, Harbin, 150040, China.
| | - Kailiang Yu
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA
- High Meadows Environmental Institute, Princeton University, Princeton, NJ, USA
| | - Li Xu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
- Earth Critical Zone and Flux Research Station of Xing'an Mountains, Chinese Academy of Sciences, Daxing'anling, 165200, China
| | - Koenraad Van Meerbeek
- Division Forest, Nature and Landscape, Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
- KU Leuven Plant Institute, KU Leuven, Leuven, Belgium
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33
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Zhang Y, Ren Z, Lu H, Chen X, Liu R, Zhang Y. Autumn nitrogen enrichment destabilizes ecosystem biomass production in a semiarid grassland. FUNDAMENTAL RESEARCH 2023; 3:170-178. [PMID: 38932923 PMCID: PMC11197746 DOI: 10.1016/j.fmre.2022.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 08/19/2022] [Accepted: 08/19/2022] [Indexed: 11/15/2022] Open
Abstract
Nitrogen (N) deposition decreases the temporal stability of ecosystem aboveground biomass production (ecosystem stability). However, little is known about how the responses of ecosystem stability differ based on seasonal N enrichment. By adding N in autumn, winter, or growing season, from October 2014 to May 2020, in a temperate grassland in northern China, we found that only N addition in autumn resulted in a significantly positive correlation between ecosystem mean aboveground net primary productivity (ANPP) and its standard deviation and significantly reduced ecosystem stability. Autumn N-induced reduction in ecosystem stability was associated with the vanished negative effect of community-wide species asynchrony (asynchronous dynamics among populations to environmental perturbations) on the standard deviation of ecosystem ANPP in combination with the emerged positive effect of dominance (Simpson's dominance index that indicates the relative weight of dominant species in a community). Our findings indicate that autumn N addition might overestimate the negative effect of annual atmospheric N deposition on ecosystem stability, suggesting that to better evaluate the influence of N deposition in temperate grasslands, both field experiments and global modeling should consider not only the annual N load but also its seasonal dynamics. Moreover, further studies should pay more attention to the alteration in the ecosystem temporal deviations, which might be more sensitive to human-induced environmental changes.
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Affiliation(s)
- Yuqiu Zhang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Yuquan Road, Beijing 100049, China
| | - Zhengru Ren
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Yuquan Road, Beijing 100049, China
| | - Haining Lu
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Yuquan Road, Beijing 100049, China
| | - Xu Chen
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Yuquan Road, Beijing 100049, China
| | - Ruoxuan Liu
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Yuquan Road, Beijing 100049, China
| | - Yunhai Zhang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Yuquan Road, Beijing 100049, China
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Zhou X, Gu X, Smaill SJ. Rethinking experiments that explore multiple global change factors. Trends Ecol Evol 2023; 38:399-401. [PMID: 36774260 DOI: 10.1016/j.tree.2023.01.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 01/09/2023] [Accepted: 01/19/2023] [Indexed: 02/11/2023]
Abstract
Our current capacity to predict the responses of ecosystem functions under global change factors is limited. We propose new and more efficient approaches to experimental design and modeling that utilize interactions between ecosystem functions to improve our understanding of their sensitivity to global change factors.
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Affiliation(s)
- Xiaoqi Zhou
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-restoration, Institute of Eco-Chongming, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China.
| | - Xinyun Gu
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-restoration, Institute of Eco-Chongming, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Simeon J Smaill
- Scion, PO Box 29237, Riccarton, Christchurch 8440, New Zealand.
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Rojas-Botero S, Teixeira LH, Kollmann J. Low precipitation due to climate change consistently reduces multifunctionality of urban grasslands in mesocosms. PLoS One 2023; 18:e0275044. [PMID: 36735650 PMCID: PMC9897532 DOI: 10.1371/journal.pone.0275044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 01/10/2023] [Indexed: 02/04/2023] Open
Abstract
Urban grasslands are crucial for biodiversity and ecosystem services in cities, while little is known about their multifunctionality under climate change. Thus, we investigated the effects of simulated climate change, i.e., increased [CO2] and temperature, and reduced precipitation, on individual functions and overall multifunctionality in mesocosm grasslands sown with forbs and grasses in four different proportions aiming at mimicking road verge grassland patches. Climate change scenarios RCP2.6 (control) and RCP8.5 (worst-case) were simulated in walk-in climate chambers of an ecotron facility, and watering was manipulated for normal vs. reduced precipitation. We measured eight indicator variables of ecosystem functions based on below- and aboveground characteristics. The young grassland communities responded to higher [CO2] and warmer conditions with increased vegetation cover, height, flower production, and soil respiration. Lower precipitation affected carbon cycling in the ecosystem by reducing biomass production and soil respiration. In turn, the water regulation capacity of the grasslands depended on precipitation interacting with climate change scenario, given the enhanced water efficiency resulting from increased [CO2] under RCP8.5. Multifunctionality was negatively affected by reduced precipitation, especially under RCP2.6. Trade-offs arose among single functions that performed best in either grass- or forb-dominated grasslands. Grasslands with an even ratio of plant functional types coped better with climate change and thus are good options for increasing the benefits of urban green infrastructure. Overall, the study provides experimental evidence of the effects of climate change on the functionality of urban ecosystems. Designing the composition of urban grasslands based on ecological theory may increase their resilience to global change.
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Affiliation(s)
- Sandra Rojas-Botero
- Chair of Restoration Ecology, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- * E-mail:
| | - Leonardo H. Teixeira
- Chair of Restoration Ecology, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Johannes Kollmann
- Chair of Restoration Ecology, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
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Brandl SJ, Lefcheck JS, Bates AE, Rasher DB, Norin T. Can metabolic traits explain animal community assembly and functioning? Biol Rev Camb Philos Soc 2023; 98:1-18. [PMID: 36054431 DOI: 10.1111/brv.12892] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 01/12/2023]
Abstract
All animals on Earth compete for free energy, which is acquired, assimilated, and ultimately allocated to growth and reproduction. Competition is strongest within communities of sympatric, ecologically similar animals of roughly equal size (i.e. horizontal communities), which are often the focus of traditional community ecology. The replacement of taxonomic identities with functional traits has improved our ability to decipher the ecological dynamics that govern the assembly and functioning of animal communities. Yet, the use of low-resolution and taxonomically idiosyncratic traits in animals may have hampered progress to date. An animal's metabolic rate (MR) determines the costs of basic organismal processes and activities, thus linking major aspects of the multifaceted constructs of ecological niches (where, when, and how energy is obtained) and ecological fitness (how much energy is accumulated and passed on to future generations). We review evidence from organismal physiology to large-scale analyses across the tree of life to propose that MR gives rise to a group of meaningful functional traits - resting metabolic rate (RMR), maximum metabolic rate (MMR), and aerobic scope (AS) - that may permit an improved quantification of the energetic basis of species coexistence and, ultimately, the assembly and functioning of animal communities. Specifically, metabolic traits integrate across a variety of typical trait proxies for energy acquisition and allocation in animals (e.g. body size, diet, mobility, life history, habitat use), to yield a smaller suite of continuous quantities that: (1) can be precisely measured for individuals in a standardized fashion; and (2) apply to all animals regardless of their body plan, habitat, or taxonomic affiliation. While integrating metabolic traits into animal community ecology is neither a panacea to disentangling the nuanced effects of biological differences on animal community structure and functioning, nor without challenges, a small number of studies across different taxa suggest that MR may serve as a useful proxy for the energetic basis of competition in animals. Thus, the application of MR traits for animal communities can lead to a more general understanding of community assembly and functioning, enhance our ability to trace eco-evolutionary dynamics from genotypes to phenotypes (and vice versa), and help predict the responses of animal communities to environmental change. While trait-based ecology has improved our knowledge of animal communities to date, a more explicit energetic lens via the integration of metabolic traits may further strengthen the existing framework.
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Affiliation(s)
- Simon J Brandl
- Department of Marine Science, The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, 78373, USA
| | - Jonathan S Lefcheck
- Tennenbaum Marine Observatories Network and MarineGEO Program, Smithsonian Environmental Research Center, Edgewater, MD, 21037, USA
| | - Amanda E Bates
- Biology Department, University of Victoria, 3800 Finnerty Road, Victoria, BC, V8P 5C2, Canada
| | - Douglas B Rasher
- Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, 04544, USA
| | - Tommy Norin
- DTU Aqua: National Institute of Aquatic Resources, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
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37
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Guo H, Dou C, Chen H, Liu J, Fu B, Li X, Zou Z, Liang D. SDGSAT-1: the world's first scientific satellite for sustainable development goals. Sci Bull (Beijing) 2023; 68:34-38. [PMID: 36588025 DOI: 10.1016/j.scib.2022.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Huadong Guo
- International Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China; Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Changyong Dou
- International Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China; Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
| | - Hongyu Chen
- International Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China; Innovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai 201304, China
| | - Jianbo Liu
- International Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China
| | - Bihong Fu
- Innovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai 201304, China
| | - Xiaoming Li
- International Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China; Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
| | - Ziming Zou
- International Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China; National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
| | - Dong Liang
- International Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China; Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
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Lian X, Zhao W, Gentine P. Recent global decline in rainfall interception loss due to altered rainfall regimes. Nat Commun 2022; 13:7642. [PMID: 36496496 PMCID: PMC9741630 DOI: 10.1038/s41467-022-35414-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 12/01/2022] [Indexed: 12/13/2022] Open
Abstract
Evaporative loss of interception (Ei) is the first process occurring during rainfall, yet its role in large-scale surface water balance has been largely underexplored. Here we show that Ei can be inferred from flux tower evapotranspiration measurements using physics-informed hybrid machine learning models built under wet versus dry conditions. Forced by satellite and reanalysis data, this framework provides an observationally constrained estimate of Ei, which is on average 84.1 ± 1.8 mm per year and accounts for 8.6 ± 0.2% of total rainfall globally during 2000-2020. Rainfall frequency regulates long-term average Ei changes, and rainfall intensity, rather than vegetation attributes, determines the fraction of Ei in gross precipitation (Ei/P). Rain events have become less frequent and more intense since 2000, driving a global decline in Ei (and Ei/P) by 4.9% (6.7%). This suggests that ongoing rainfall changes favor a partitioning towards more soil moisture and runoff, benefiting ecosystem functions but simultaneously increasing flood risks.
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Affiliation(s)
- Xu Lian
- Department of Earth and Environmental Engineering, Columbia University, New York, NY, USA.
| | - Wenli Zhao
- Department of Earth and Environmental Engineering, Columbia University, New York, NY, USA
| | - Pierre Gentine
- Department of Earth and Environmental Engineering, Columbia University, New York, NY, USA
- Center for Learning the Earth with Artificial intelligence and Physics (LEAP), Columbia University, New York, NY, USA
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Desai AR, Murphy BA, Wiesner S, Thom J, Butterworth BJ, Koupaei‐Abyazani N, Muttaqin A, Paleri S, Talib A, Turner J, Mineau J, Merrelli A, Stoy P, Davis K. Drivers of Decadal Carbon Fluxes Across Temperate Ecosystems. JOURNAL OF GEOPHYSICAL RESEARCH. BIOGEOSCIENCES 2022; 127:e2022JG007014. [PMID: 37502709 PMCID: PMC10369927 DOI: 10.1029/2022jg007014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 07/29/2023]
Abstract
Long-running eddy covariance flux towers provide insights into how the terrestrial carbon cycle operates over multiple timescales. Here, we evaluated variation in net ecosystem exchange (NEE) of carbon dioxide (CO2) across the Chequamegon Ecosystem-Atmosphere Study AmeriFlux core site cluster in the upper Great Lakes region of the USA from 1997 to 2020. The tower network included two mature hardwood forests with differing management regimes (US-WCr and US-Syv), two fen wetlands with varying levels of canopy sheltering and vegetation (US-Los and US-ALQ), and a very tall (400 m) landscape-level tower (US-PFa). Together, they provided over 70 site-years of observations. The 19-tower Chequamegon Heterogenous Ecosystem Energy-balance Study Enabled by a High-density Extensive Array of Detectors 2019 campaign centered around US-PFa provided additional information on the spatial variation of NEE. Decadal variability was present in all long-term sites, but cross-site coherence in interannual NEE in the earlier part of the record became weaker with time as non-climatic factors such as local disturbances likely dominated flux time series. Average decadal NEE at the tall tower transitioned from carbon source to sink to near neutral over 24 years. Respiration had a greater effect than photosynthesis on driving variations in NEE at all sites. Declining snowfall offset potential increases in assimilation from warmer springs, as less-insulated soils delayed start of spring green-up. Higher CO2 increased maximum net assimilation parameters but not total gross primary productivity. Stand-scale sites were larger net sinks than the landscape tower. Clustered, long-term carbon flux observations provide value for understanding the diverse links between carbon and climate and the challenges of upscaling these responses across space.
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Affiliation(s)
- Ankur R. Desai
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Bailey A. Murphy
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Susanne Wiesner
- Department of Plant and Earth ScienceUniversity of Wisconsin–River FallsRiver FallsWIUSA
| | - Jonathan Thom
- Space Science and Engineering CenterUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Brian J. Butterworth
- Cooperative Institute for Research in Environmental SciencesCU BoulderBoulderCOUSA
- NOAA Physical Sciences LaboratoryBoulderCOUSA
| | | | - Andi Muttaqin
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Sreenath Paleri
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Ammara Talib
- Department of Civil and Environmental EngineeringUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Jess Turner
- Freshwater & Marine SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - James Mineau
- Department of Atmospheric and Oceanic SciencesUniversity of Wisconsin–MadisonMadisonWIUSA
| | - Aronne Merrelli
- Department of Climate and Space Sciences and EngineeringUniversity of MichiganAnn ArborMIUSA
| | - Paul Stoy
- Department of Plant and Earth ScienceUniversity of Wisconsin–River FallsRiver FallsWIUSA
| | - Ken Davis
- Department of MeteorologyPennsylvania State UniversityUniversity ParkPAUSA
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40
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Fu Z, Ciais P, Feldman AF, Gentine P, Makowski D, Prentice IC, Stoy PC, Bastos A, Wigneron JP. Critical soil moisture thresholds of plant water stress in terrestrial ecosystems. SCIENCE ADVANCES 2022; 8:eabq7827. [PMID: 36332021 PMCID: PMC9635832 DOI: 10.1126/sciadv.abq7827] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
Plant water stress occurs at the point when soil moisture (SM) limits transpiration, defining a critical SM threshold (θcrit). Knowledge of the spatial distribution of θcrit is crucial for future projections of climate and water resources. Here, we use global eddy covariance observations to quantify θcrit and evaporative fraction (EF) regimes. Three canonical variables describe how EF is controlled by SM: the maximum EF (EFmax), θcrit, and slope (S) between EF and SM. We find systematic differences of these three variables across biomes. Variation in θcrit, S, and EFmax is mostly explained by soil texture, vapor pressure deficit, and precipitation, respectively, as well as vegetation structure. Dryland ecosystems tend to operate at low θcrit and show adaptation to water deficits. The negative relationship between θcrit and S indicates that dryland ecosystems minimize θcrit through mechanisms of sustained SM extraction and transport by xylem. Our results further suggest an optimal adaptation of local EF-SM response that maximizes growing-season evapotranspiration and photosynthesis.
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Affiliation(s)
- Zheng Fu
- Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Philippe Ciais
- Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Andrew F. Feldman
- NASA Goddard Space Flight Center, Earth Sciences Division, Greenbelt, MD 20771, USA
| | - Pierre Gentine
- Department of Earth and Environmental Engineering, Columbia University, New York, NY 10027, USA
| | - David Makowski
- Unit Applied Mathematics and Computer Science (UMR 518), INRAE, AgroParisTech, Université Paris-Saclay, Paris, France
| | - I. Colin Prentice
- Georgina Mace Centre for the Living Planet, Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot SL5 7PY, UK
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing 100084, China
| | - Paul C. Stoy
- Department of Biological Systems Engineering, University of Wisconsin–Madison, Madison, WI 53706, USA
| | - Ana Bastos
- Department Biogeochemical Integration, Max Planck Institute for Biogeochemistry, D-07745 Jena, Germany
| | - Jean-Pierre Wigneron
- ISPA, INRAE, Université de Bordeaux, Bordeaux Sciences Agro, F-33140 Villenave d’Ornon, France
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41
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Wang Y, Liu B, Zhao J, Ye C, Wei L, Sun J, Chu C, Lee TM. Global patterns and abiotic drivers of ecosystem multifunctionality in dominant natural ecosystems. ENVIRONMENT INTERNATIONAL 2022; 168:107480. [PMID: 36007300 DOI: 10.1016/j.envint.2022.107480] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 07/24/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
The potential patterns and processes of ecosystem multifunctionality (EMF) across global ecosystems are largely unknown, which limits our understanding of how ecosystems respond to drivers. Here we compile a global dataset that consists of 973 unique sites across the forest, grassland, and shrub ecosystems. We identify a critical global pattern of hump-shaped EMF relationship with mean annual precipitation at a threshold of ∼671 mm, where low and high precipitation patterns are discriminated. We find that climatic and soil factors jointly drive the EMF in low precipitation areas, and climatic factors dominate the EMF in high precipitation regions. However, when comparing across the three dominant ecosystems and precipitation regions, the key driver in EMF differs substantially. Specifically, climatic and soil factors dominate the EMF of low and high precipitation regions across forest ecosystems, respectively. Climatic drivers dominate the EMF under different precipitation conditions across grassland and shrub ecosystems. Overall, our findings highlight the importance of climatic and soil drivers on EMF, which should be considered in ecosystem stability models in response to global climate and land-use change scenarios.
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Affiliation(s)
- Yi Wang
- School of Life Sciences and State Key Laboratory of Biological Control, Sun Yat-sen University, Guangzhou 510275, China.
| | - Biying Liu
- School of Life Sciences and State Key Laboratory of Biological Control, Sun Yat-sen University, Guangzhou 510275, China
| | - Jingjing Zhao
- School of Life Sciences and State Key Laboratory of Biological Control, Sun Yat-sen University, Guangzhou 510275, China
| | - Chongchong Ye
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Lan Wei
- Center for Dynamic Supervision for Usage of Fangchenggang City Sea Area, Fangchenggang, 538001, China
| | - Jian Sun
- State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Chengjin Chu
- School of Ecology and State Key Laboratory of Biological Control, Sun Yat-sen University, Guangzhou 510275, China
| | - Tien Ming Lee
- School of Life Sciences and State Key Laboratory of Biological Control, Sun Yat-sen University, Guangzhou 510275, China; School of Ecology and State Key Laboratory of Biological Control, Sun Yat-sen University, Guangzhou 510275, China.
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42
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Lamour J, Davidson KJ, Ely KS, Le Moguédec G, Leakey ADB, Li Q, Serbin SP, Rogers A. An improved representation of the relationship between photosynthesis and stomatal conductance leads to more stable estimation of conductance parameters and improves the goodness-of-fit across diverse data sets. GLOBAL CHANGE BIOLOGY 2022; 28:3537-3556. [PMID: 35090072 DOI: 10.1111/gcb.16103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 01/17/2022] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Stomata play a central role in surface-atmosphere exchange by controlling the flux of water and CO2 between the leaf and the atmosphere. Representation of stomatal conductance (gsw ) is therefore an essential component of models that seek to simulate water and CO2 exchange in plants and ecosystems. For given environmental conditions at the leaf surface (CO2 concentration and vapor pressure deficit or relative humidity), models typically assume a linear relationship between gsw and photosynthetic CO2 assimilation (A). However, measurement of leaf-level gsw response curves to changes in A are rare, particularly in the tropics, resulting in only limited data to evaluate this key assumption. Here, we measured the response of gsw and A to irradiance in six tropical species at different leaf phenological stages. We showed that the relationship between gsw and A was not linear, challenging the key assumption upon which optimality theory is based-that the marginal cost of water gain is constant. Our data showed that increasing A resulted in a small increase in gsw at low irradiance, but a much larger increase at high irradiance. We reformulated the popular Unified Stomatal Optimization (USO) model to account for this phenomenon and to enable consistent estimation of the key conductance parameters g0 and g1 . Our modification of the USO model improved the goodness-of-fit and reduced bias, enabling robust estimation of conductance parameters at any irradiance. In addition, our modification revealed previously undetectable relationships between the stomatal slope parameter g1 and other leaf traits. We also observed nonlinear behavior between A and gsw in independent data sets that included data collected from attached and detached leaves, and from plants grown at elevated CO2 concentration. We propose that this empirical modification of the USO model can improve the measurement of gsw parameters and the estimation of plant and ecosystem-scale water and CO2 fluxes.
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Affiliation(s)
- Julien Lamour
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, New York, USA
| | - Kenneth J Davidson
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, New York, USA
- Department of Ecology and Evolution, Stony Brook University, Stony Brook, New York, USA
| | - Kim S Ely
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, New York, USA
| | - Gilles Le Moguédec
- AMAP, Université Montpellier, INRAE, Cirad CNRS, IRD, Montpellier, France
| | - Andrew D B Leakey
- Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Qianyu Li
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, New York, USA
| | - Shawn P Serbin
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, New York, USA
| | - Alistair Rogers
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, New York, USA
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Zhou G, Zhou X, Eldridge DJ, Han X, Song Y, Liu R, Zhou L, He Y, Du Z, Delgado‐Baquerizo M. Temperature and Rainfall Patterns Constrain the Multidimensional Rewilding of Global Forests. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201144. [PMID: 35470591 PMCID: PMC9218649 DOI: 10.1002/advs.202201144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/30/2022] [Indexed: 06/14/2023]
Abstract
The long-term contribution of global forest restoration to support multiple dimensions of biodiversity and ecosystem function remains largely illusive across contrasting climates and forest types. This hampers the capacity to predict the future of forest rewilding under changing global climates. Here, 120 studies are synthesized across five continents, and it is found that forest restoration promotes multiple dimensions of biodiversity and ecosystem function such as soil fertility, plant biomass, microbial habitat, and carbon sequestration across contrasting climates and forest types. Based on global relationship between stand age and soil organic carbon stock, planting 350 million hectares of forest under the UN Bonn Challenge can sequester >30 Gt soil C in the surface 20 cm over the next century. However, these findings also indicate that predicted increases in temperature and reductions in precipitation can constrain the positive effects of forest rewilding on biodiversity and ecosystem function. Further, important tradeoffs are found in very old forests, with considerable disconnection between biodiversity and ecosystem function. Together, these findings provide evidence of the importance of the multidimensional rewilding of forests, suggesting that on-going climatic changes may dampen the expectations of the positive effects of forest restoration on biodiversity and ecosystem function.
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Affiliation(s)
- Guiyao Zhou
- Zhejiang Tiantong Forest Ecosystem National Observation and Research StationCenter for Global Change and Ecological ForecastingSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai200241China
| | - Xuhui Zhou
- Zhejiang Tiantong Forest Ecosystem National Observation and Research StationCenter for Global Change and Ecological ForecastingSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai200241China
- Northeast Asia Ecosystem Carbon Sink Research Center (NACC)Center for Ecological ResearchKey Laboratory of Sustainable Forest Ecosystem Management‐Ministry of EducationSchool of ForestryNortheast Forestry UniversityHarbin150040China
| | - David J. Eldridge
- Centre for Ecosystem ScienceSchool of BiologicalEarth and Environmental SciencesUniversity of New South WalesSydneyNew South Wales2052Australia
| | - Ximei Han
- Zhejiang Tiantong Forest Ecosystem National Observation and Research StationCenter for Global Change and Ecological ForecastingSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai200241China
| | - Yanjun Song
- Forest Ecology and Forest Management GroupWageningen University and ResearchP.O. Box 47Wageningen6700 AAthe Netherlands
| | - Ruiqiang Liu
- Northeast Asia Ecosystem Carbon Sink Research Center (NACC)Center for Ecological ResearchKey Laboratory of Sustainable Forest Ecosystem Management‐Ministry of EducationSchool of ForestryNortheast Forestry UniversityHarbin150040China
| | - Lingyan Zhou
- Zhejiang Tiantong Forest Ecosystem National Observation and Research StationCenter for Global Change and Ecological ForecastingSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai200241China
| | - Yanghui He
- Northeast Asia Ecosystem Carbon Sink Research Center (NACC)Center for Ecological ResearchKey Laboratory of Sustainable Forest Ecosystem Management‐Ministry of EducationSchool of ForestryNortheast Forestry UniversityHarbin150040China
| | - Zhenggang Du
- Northeast Asia Ecosystem Carbon Sink Research Center (NACC)Center for Ecological ResearchKey Laboratory of Sustainable Forest Ecosystem Management‐Ministry of EducationSchool of ForestryNortheast Forestry UniversityHarbin150040China
| | - Manuel Delgado‐Baquerizo
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS)CSICAv. Reina Mercedes 10SevillaE‐41012Spain
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44
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Thakur G, Schymanski SJ, Mallick K, Trebs I, Sulis M. Downwelling longwave radiation and sensible heat flux observations are critical for surface temperature and emissivity estimation from flux tower data. Sci Rep 2022; 12:8592. [PMID: 35597778 PMCID: PMC9124221 DOI: 10.1038/s41598-022-12304-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 05/09/2022] [Indexed: 12/03/2022] Open
Abstract
Land surface temperature (LST) is a preeminent state variable that controls the energy and water exchange between the Earth’s surface and the atmosphere. At the landscape-scale, LST is derived from thermal infrared radiance measured using space-borne radiometers. In contrast, plot-scale LST estimation at flux tower sites is commonly based on the inversion of upwelling longwave radiation captured by tower-mounted radiometers, whereas the role of the downwelling longwave radiation component is often ignored. We found that neglecting the reflected downwelling longwave radiation leads not only to substantial bias in plot-scale LST estimation, but also have important implications for the estimation of surface emissivity on which LST is co-dependent. The present study proposes a novel method for simultaneous estimation of LST and emissivity at the plot-scale and addresses in detail the consequences of omitting down-welling longwave radiation as frequently done in the literature. Our analysis uses ten eddy covariance sites with different land cover types and found that the LST values obtained using both upwelling and downwelling longwave radiation components are 0.5–1.5 K lower than estimates using only upwelling longwave radiation. Furthermore, the proposed method helps identify inconsistencies between plot-scale radiometric and aerodynamic measurements, likely due to footprint mismatch between measurement approaches. We also found that such inconsistencies can be removed by slight corrections to the upwelling longwave component and subsequent energy balance closure, resulting in realistic estimates of surface emissivity and consistent relationships between energy fluxes and surface-air temperature differences. The correspondence between plot-scale LST and landscape-scale LST depends on site-specific characteristics, such as canopy density, sensor locations and viewing angles. Here we also quantify the uncertainty in plot-scale LST estimates due to uncertainty in tower-based measurements using the different methods. The results of this work have significant implications for the combined use of aerodynamic and radiometric measurements to understand the interactions and feedbacks between LST and surface-atmosphere exchange processes.
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Affiliation(s)
- Gitanjali Thakur
- Environmental Sensing and Modelling Unit (ENVISION), Environmental Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg.
| | - Stanislaus J Schymanski
- Environmental Sensing and Modelling Unit (ENVISION), Environmental Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg.
| | - Kaniska Mallick
- Environmental Sensing and Modelling Unit (ENVISION), Environmental Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg
| | - Ivonne Trebs
- Environmental Sensing and Modelling Unit (ENVISION), Environmental Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg
| | - Mauro Sulis
- Environmental Sensing and Modelling Unit (ENVISION), Environmental Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg
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Cui E, Lu R, Xu X, Sun H, Qiao Y, Ping J, Qiu S, Lin Y, Bao J, Yong Y, Zheng Z, Yan E, Xia J. Soil phosphorus drives plant trait variations in a mature subtropical forest. GLOBAL CHANGE BIOLOGY 2022; 28:3310-3320. [PMID: 35234326 DOI: 10.1111/gcb.16148] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Earth system models are implementing soil phosphorus dynamic and plant functional traits to predict functional changes in global forests. However, the linkage between soil phosphorus and plant traits lacks empirical evidence, especially in mature forests. Here, we examined the soil phosphorus constraint on plant functional traits in a mature subtropical forest based on observations of 9943 individuals from 90 species in a 5-ha forest dynamic plot and 405 individuals from 15 species in an adjacent 10-year nutrient-addition experiment. We first confirmed a pervasive phosphorus limitation on subtropical tree growth based on leaf N:P ratios. Then, we found that soil phosphorus dominated multidimensional trait variations in the 5-ha forest dynamic plot. Soil phosphorus content explained 44% and 53% of the variance in the traits defining the main functional space across species and communities, respectively. Lastly, we found much stronger phosphorus effects on most plant functional traits than nitrogen at both species and community levels in the 10-year nutrient-addition experiment. This study provides evidence for the consistent pattern of soil phosphorus constraint on plant trait variations between the species and community levels in a mature evergreen broadleaf forest in the East Asian monsoon region. These findings shed light on the predominant role of soil phosphorus on plant functional trait variations in mature subtropical forests, providing new insights for models to incorporate soil phosphorus constraint in predicting future vegetation dynamics.
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Affiliation(s)
- Erqian Cui
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Center for Global Change and Complex Ecosystems, East China Normal University, Shanghai, China
| | - Ruiling Lu
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Center for Global Change and Complex Ecosystems, East China Normal University, Shanghai, China
| | - Xiaoni Xu
- School of Life Sciences, Fudan University, Shanghai, China
| | - Huanfa Sun
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Center for Global Change and Complex Ecosystems, East China Normal University, Shanghai, China
| | - Yang Qiao
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Center for Global Change and Complex Ecosystems, East China Normal University, Shanghai, China
| | - Jiaye Ping
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Center for Global Change and Complex Ecosystems, East China Normal University, Shanghai, China
| | - Shuying Qiu
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Center for Global Change and Complex Ecosystems, East China Normal University, Shanghai, China
| | - Yihua Lin
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Jiehuan Bao
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Yutong Yong
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Zemei Zheng
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Enrong Yan
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Forest Ecosystem Research and Observation Station in Putuo Island, East China Normal University, Shanghai, China
| | - Jianyang Xia
- Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
- Center for Global Change and Complex Ecosystems, East China Normal University, Shanghai, China
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Singh C, van der Ent R, Wang‐Erlandsson L, Fetzer I. Hydroclimatic adaptation critical to the resilience of tropical forests. GLOBAL CHANGE BIOLOGY 2022; 28:2930-2939. [PMID: 35100483 PMCID: PMC9306811 DOI: 10.1111/gcb.16115] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 01/28/2022] [Indexed: 06/06/2023]
Abstract
Forest and savanna ecosystems naturally exist as alternative stable states. The maximum capacity of these ecosystems to absorb perturbations without transitioning to the other alternative stable state is referred to as 'resilience'. Previous studies have determined the resilience of terrestrial ecosystems to hydroclimatic changes predominantly based on space-for-time substitution. This substitution assumes that the contemporary spatial frequency distribution of ecosystems' tree cover structure holds across time. However, this assumption is problematic since ecosystem adaptation over time is ignored. Here we empirically study tropical forests' stability and hydroclimatic adaptation dynamics by examining remotely sensed tree cover change (ΔTC; aboveground ecosystem structural change) and root zone storage capacity (Sr ; buffer capacity towards water-stress) over the last two decades. We find that ecosystems at high (>75%) and low (<10%) tree cover adapt by instigating considerable subsoil investment, and therefore experience limited ΔTC-signifying stability. In contrast, unstable ecosystems at intermediate (30%-60%) tree cover are unable to exploit the same level of adaptation as stable ecosystems, thus showing considerable ΔTC. Ignoring this adaptive mechanism can underestimate the resilience of the forest ecosystems, which we find is largely underestimated in the case of the Congo rainforests. The results from this study emphasise the importance of the ecosystem's temporal dynamics and adaptation in inferring and assessing the risk of forest-savannah transitions under rapid hydroclimatic change.
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Affiliation(s)
- Chandrakant Singh
- Stockholm Resilience CentreStockholm UniversityStockholmSweden
- Bolin Centre for Climate ResearchStockholm UniversityStockholmSweden
| | - Ruud van der Ent
- Department of Water ManagementFaculty of Civil Engineering and GeosciencesDelft University of TechnologyDelftThe Netherlands
- Department of Physical GeographyFaculty of GeosciencesUtrecht UniversityUtrechtThe Netherlands
| | - Lan Wang‐Erlandsson
- Stockholm Resilience CentreStockholm UniversityStockholmSweden
- Bolin Centre for Climate ResearchStockholm UniversityStockholmSweden
| | - Ingo Fetzer
- Stockholm Resilience CentreStockholm UniversityStockholmSweden
- Bolin Centre for Climate ResearchStockholm UniversityStockholmSweden
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Variability of ecosystem carbon source from microbial respiration is controlled by rainfall dynamics. Proc Natl Acad Sci U S A 2021; 118:2115283118. [PMID: 34930848 DOI: 10.1073/pnas.2115283118] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2021] [Indexed: 11/18/2022] Open
Abstract
Soil heterotrophic respiration (R h) represents an important component of the terrestrial carbon cycle that affects whether ecosystems function as carbon sources or sinks. Due to the complex interactions between biological and physical factors controlling microbial growth, R h is uncertain and difficult to predict, limiting our ability to anticipate future climate trajectories. Here we analyze the global FLUXNET 2015 database aided by a probabilistic model of microbial growth to examine the ecosystem-scale dynamics of R h and identify primary predictors of its variability. We find that the temporal variability in R h is consistently distributed according to a Gamma distribution, with shape and scale parameters controlled only by rainfall characteristics and vegetation productivity. This distribution originates from the propagation of fast hydrologic fluctuations on the slower biological dynamics of microbial growth and is independent of biome, soil type, and microbial physiology. This finding allows us to readily provide accurate estimates of the mean R h and its variance, as confirmed by a comparison with an independent global dataset. Our results suggest that future changes in rainfall regime and net primary productivity will significantly alter the dynamics of R h and the global carbon budget. In regions that are becoming wetter, R h may increase faster than net primary productivity, thereby reducing the carbon storage capacity of terrestrial ecosystems.
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48
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Abstract
[Figure: see text].
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Affiliation(s)
- Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany.,Institute of Biology, Leipzig University, Puschstraße 4, 04103 Leipzig, Germany
| | - Alexandra Weigelt
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany.,Institute of Biology, Leipzig University, Johannisallee 21, 04103 Leipzig, Germany
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