气候变化领域集成服务门户(CCPortal): Climate and land-use changes interact to drive long-term reorganization of riverine fish communities globally

CCPortal

DOI	10.1073/pnas.2011639118
	Climate and land-use changes interact to drive long-term reorganization of riverine fish communities globally
	Comte L.; Olden J.D.; Tedesco P.A.; Ruhi A.; Giam X.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:27
英文摘要	As climate change unfolds, changes in population dynamics and species distribution ranges are expected to fundamentally reshuffle communities worldwide. Yet, a comprehensive understanding of the mechanisms and extent of community reorganization remains elusive. This is particularly true in riverine systems, which are simultaneously exposed to changing temperature and streamflow, and where land-use change continues to be a major driver of biodiversity loss. Here, we use the most comprehensive compilation of fish abundance time series to date to provide a global synthesis of climate- and LU-induced effects on riverine biota with respect to changes in species thermal and streamflow affinities. We demonstrate that fish communities are increasingly dominated by thermophilic (warm-water) and limnophilic (slow-water) species. Despite being consistent with trends in water temperature and streamflow observed over recent decades, these community changes appear largely decoupled from each other and show wide spatial variation. We further reveal a synergy among climate- and land use-related drivers, such that community thermophilization is heightened in more human-modified systems. Importantly, communities in which species experience thermal and flow regimes that approach or exceed their tolerance thresholds (high community sensitivity), as well as species-poor communities (low community resilience), also display faster rates of compositional change. This research illustrates that quantifying vulnerability of riverine systems to climate change requires a broadening from a narrower thermal focus to more integrative approaches that account for the spatially varying and multifaceted sensitivity of riverine organisms to the interactive effects of water temperature, hydrology, and other anthropogenic changes. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Climate vulnerability; Community flow index; Community temperature index; Freshwater ecosystems; River fragmentation
语种	英语
scopus关键词	hot water; Article; climate change; community dynamics; fish; hydrology; land use; nonhuman; population abundance; river ecosystem; slow water; thermophilization; thermoregulation; water flow; water temperature
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238696
作者单位	Department of Ecology and Evolutionary Biology, The University of Tennessee, Knoxville, TN 37996, United States; School of Biological Sciences, Illinois State University, Normal, IL 61790, United States; School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98105, United States; Laboratoire Evolution et Diversité Biologique (EDB), UMR5174, Université Toulouse 3 Paul Sabatier, CNRS, Institut de Recherche pour le Développement (IRD), Toulouse, F-31062, France; Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720, United States
推荐引用方式 GB/T 7714	Comte L.,Olden J.D.,Tedesco P.A.,et al. Climate and land-use changes interact to drive long-term reorganization of riverine fish communities globally[J],2021,118(27).
APA	Comte L.,Olden J.D.,Tedesco P.A.,Ruhi A.,&Giam X..(2021).Climate and land-use changes interact to drive long-term reorganization of riverine fish communities globally.Proceedings of the National Academy of Sciences of the United States of America,118(27).
MLA	Comte L.,et al."Climate and land-use changes interact to drive long-term reorganization of riverine fish communities globally".Proceedings of the National Academy of Sciences of the United States of America 118.27(2021).