气候变化领域集成服务门户(CCPortal): Evenness effects mask richness effects on ecosystem functioning at macro-scales in lakes

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DOI	10.1111/ele.13407
	Evenness effects mask richness effects on ecosystem functioning at macro-scales in lakes
	Filstrup C.T.; King K.B.S.; McCullough I.M.
发表日期	2019
ISSN	1461023X
卷号	22 期号:12
英文摘要	Biodiversity–ecosystem functioning (BEF) theory has largely focused on species richness, although studies have demonstrated that evenness may have stronger effects. While theory and numerous small-scale studies support positive BEF relationships, regional studies have documented negative effects of evenness on ecosystem functioning. We analysed a lake dataset spanning the continental US to evaluate whether strong evenness effects are common at broad spatial scales and if BEF relationships are similar across diverse regions and trophic levels. At the continental scale, phytoplankton evenness explained more variance in phytoplankton and zooplankton resource use efficiency (RUE; ratio of biomass to resources) than richness. For individual regions, slopes of phytoplankton evenness–RUE relationships were consistently negative and positive for phytoplankton and zooplankton RUE, respectively, and most slopes did not significantly differ among regions. Findings suggest that negative evenness effects may be more common than previously documented and are not exceptions restricted to highly disturbed systems. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Biodiversity; ecosystem functioning; evenness; lakes; macrosystems; National Lakes Assessment; phytoplankton; richness; zooplankton
语种	英语
scopus关键词	animal; biodiversity; biomass; ecosystem; lake; phytoplankton; zooplankton; Animals; Biodiversity; Biomass; Ecosystem; Lakes; Phytoplankton; Zooplankton
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120997
作者单位	Natural Resources Research Institute, University of Minnesota Duluth, Duluth, MN, United States; Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, United States
推荐引用方式 GB/T 7714	Filstrup C.T.,King K.B.S.,McCullough I.M.. Evenness effects mask richness effects on ecosystem functioning at macro-scales in lakes[J],2019,22(12).
APA	Filstrup C.T.,King K.B.S.,&McCullough I.M..(2019).Evenness effects mask richness effects on ecosystem functioning at macro-scales in lakes.Ecology Letters,22(12).
MLA	Filstrup C.T.,et al."Evenness effects mask richness effects on ecosystem functioning at macro-scales in lakes".Ecology Letters 22.12(2019).