globalchange  > 气候变化与战略
DOI: 10.1111/geb.13035
论文题名:
Temperature drives local contributions to beta diversity in mountain streams: Stochastic and deterministic processes
作者: Wang J.; Legendre P.; Soininen J.; Yeh C.-F.; Graham E.; Stegen J.; Casamayor E.O.; Zhou J.; Shen J.; Pan F.
刊名: Global Ecology and Biogeography
ISSN: 1466822X
出版年: 2020
卷: 29, 期:3
语种: 英语
英文关键词: bacteria ; beta diversity ; diatoms ; elevational gradient ; macroinvertebrates ; streams
Scopus关键词: bacterium ; biodiversity ; diatom ; macroinvertebrate ; stochasticity ; stream ; taxonomy ; temperature effect ; Asia ; Europe ; Bacillariophyta
英文摘要: Aim: Community variation (i.e. beta diversity) along geographical gradients is of substantial interest in ecology and biodiversity reserves in the face of global changes. However, the generality in beta diversity patterns and underlying processes remains less studied across trophic levels and geographical regions. We documented beta diversity patterns and underlying ecological processes of stream bacteria, diatoms and macroinvertebrates along six elevational gradients. Locations: Asia and Europe. Methods: We examined stream communities using molecular and morphological methods. We characterised community uniqueness with local contributions to beta diversity (LCBD), and investigated the drivers of its geographic patterns using Mid-Domain Effect (MDE), coenocline simulation, Raup-Crick null model approach, and through comparisons to environmental factors. MDE is a stochastic model by considering species elevational range, while coenocline simulation is a deterministic model by considering species niche optima and tolerance. The null model provides possible underlying mechanisms of community assembly with the degree to which deterministic processes create communities deviating from those of null expectations. Results: Across all taxa, we revealed a general U-shaped LCBD-elevation relationship, suggesting higher uniqueness of community composition at both elevational ends. This pattern was confirmed and could be explained by both stochastic and deterministic models, that is, MDE and coenocline simulation, respectively, and was supported by the dominance of species replacement. Temperature was the main environmental factor underlying elevational patterns in LCBD. The generalists with broad niche breadths were key in maintaining community uniqueness, and the higher relative importance of deterministic processes resulted in stronger U-shaped patterns regardless of taxonomic group. Conclusions: Our synthesis across both mountains and taxonomic groups clearly shows that there are consistent elevational patterns in LCBD among taxonomic groups, and that these patterns are explained by similar ecological mechanisms, producing a more complete picture for understanding and bridging the spatial variation in biodiversity under changing climate. © 2019 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159058
Appears in Collections:气候变化与战略

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作者单位: State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China; Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland; University of Chinese Academy of Sciences, Beijing, China; Département de sciences biologiques, Université de Montréal, Montréal, QC, Canada; Pacific Northwest National Laboratory, Richland, WA, United States; Integrative Freshwater Ecology Group, Center for Advanced Studies of Blanes-Spanish Council for Research CEAB-CSIC, Blanes, Spain; Institute for Environmental Genomics, Department of Microbiology and Plant Biology, and School of Civil Engineering and Environmental Sciences, University of Oklahoma, Norman, OK, United States; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China; Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Nanjing Normal University, Nanjing, China

Recommended Citation:
Wang J.,Legendre P.,Soininen J.,et al. Temperature drives local contributions to beta diversity in mountain streams: Stochastic and deterministic processes[J]. Global Ecology and Biogeography,2020-01-01,29(3)
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