气候变化领域集成服务门户(CCPortal): Embracing scale-dependence to achieve a deeper understanding of biodiversity and its change across communities

CCPortal

DOI	10.1111/ele.13151
	Embracing scale-dependence to achieve a deeper understanding of biodiversity and its change across communities
	Chase J.M.; McGill B.J.; McGlinn D.J.; May F.; Blowes S.A.; Xiao X.; Knight T.M.; Purschke O.; Gotelli N.J.
发表日期	2018
ISSN	1461023X
卷号	21 期号:11
英文摘要	Because biodiversity is multidimensional and scale-dependent, it is challenging to estimate its change. However, it is unclear (1) how much scale-dependence matters for empirical studies, and (2) if it does matter, how exactly we should quantify biodiversity change. To address the first question, we analysed studies with comparisons among multiple assemblages, and found that rarefaction curves frequently crossed, implying reversals in the ranking of species richness across spatial scales. Moreover, the most frequently measured aspect of diversity – species richness – was poorly correlated with other measures of diversity. Second, we collated studies that included spatial scale in their estimates of biodiversity change in response to ecological drivers and found frequent and strong scale-dependence, including nearly 10% of studies which showed that biodiversity changes switched directions across scales. Having established the complexity of empirical biodiversity comparisons, we describe a synthesis of methods based on rarefaction curves that allow more explicit analyses of spatial and sampling effects on biodiversity comparisons. We use a case study of nutrient additions in experimental ponds to illustrate how this multi-dimensional and multi-scale perspective informs the responses of biodiversity to ecological drivers. © 2018 John Wiley & Sons Ltd/CNRS
英文关键词	Evenness; Hill number; rarefaction; scale-dependence; Simpson's index; species richness; species–area relationship
语种	英语
scopus关键词	biodiversity; complexity; index method; scale effect; species diversity; species evenness; species richness; biodiversity; ecology; Biodiversity; Ecology
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/121232
作者单位	German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, 04103, Germany; Department of Computer Science, Martin Luther University, Halle, 06099, Germany; School of Biology and Ecology, University of Maine, Orono, ME 04469, United States; Mitchell Center for Sustainability Solutions, University of Maine, Orono, ME 04469, United States; Biology Department, College of Charleston, Charleston, SC 29424, United States; Leuphana University Lüneburg, Universitätsallee 1, Lüneburg, D-21335, Germany; Department Community Ecology, Helmholtz Centre for Environmental Research – UFZ, Theodor-Lieser-Strasse 4, Halle, 06120, Germany; Institute of Biology, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, Halle, 06108, Germany; Department of Biology, University of Vermont, Burlington, VT 05405, United States
推荐引用方式 GB/T 7714	Chase J.M.,McGill B.J.,McGlinn D.J.,et al. Embracing scale-dependence to achieve a deeper understanding of biodiversity and its change across communities[J],2018,21(11).
APA	Chase J.M..,McGill B.J..,McGlinn D.J..,May F..,Blowes S.A..,...&Gotelli N.J..(2018).Embracing scale-dependence to achieve a deeper understanding of biodiversity and its change across communities.Ecology Letters,21(11).
MLA	Chase J.M.,et al."Embracing scale-dependence to achieve a deeper understanding of biodiversity and its change across communities".Ecology Letters 21.11(2018).