DOI: 10.1111/gcb.13536
论文题名: Response diversity, nonnative species, and disassembly rules buffer freshwater ecosystem processes from anthropogenic change
作者: Moore J.W. ; Olden J.D.
刊名: Global Change Biology
出版年: 2017
卷: 23, 期: 5 起始页码: 1871
结束页码: 1880
语种: 英语
英文关键词: biodiversity
; ecosystem function
; resilience
; stream
; urbanization
Scopus关键词: Pisces
英文摘要: Integrating knowledge of environmental degradation, biodiversity change, and ecosystem processes across large spatial scales remains a key challenge to illuminating the resilience of earth's systems. There is now a growing realization that the manner in which communities will respond to anthropogenic impacts will ultimately control the ecosystem consequences. Here, we examine the response of freshwater fishes and their nutrient excretion – a key ecosystem process that can control aquatic productivity – to human land development across the contiguous United States. By linking a continental-scale dataset of 533 fish species from 8100 stream locations with species functional traits, nutrient excretion, and land remote sensing, we present four key findings. First, we provide the first geographic footprint of nutrient excretion by freshwater fishes across the United States and reveal distinct local- and continental-scale heterogeneity in community excretion rates. Second, fish species exhibited substantial response diversity in their sensitivity to land development; for native species, the more tolerant species were also the species contributing greater ecosystem function in terms of nutrient excretion. Third, by modeling increased land-use change and resultant shifts in fish community composition, land development is estimated to decrease fish nutrient excretion in the majority (63%) of ecoregions. Fourth, the loss of nutrient excretion would be 28% greater if biodiversity loss was random or 84% greater if there were no nonnative species. Thus, ecosystem processes are sensitive to increased anthropogenic degradation but biotic communities provide multiple pathways for resistance and this resistance varies across space. © 2016 John Wiley & Sons Ltd 资助项目: Moore, J.W.
; Earth to Ocean Research Group, Simon Fraser UniversityCanada
; 电子邮件: jwmoore@sfu.ca
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60975
Appears in Collections: 影响、适应和脆弱性
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作者单位: Earth to Ocean Research Group, Simon Fraser University, Burnaby, BC, Canada; School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
Moore J.W.,Olden J.D.. Response diversity, nonnative species, and disassembly rules buffer freshwater ecosystem processes from anthropogenic change[J]. Global Change Biology,2017-01-01,23(5)