气候变化领域集成服务门户(CCPortal): To replicate, or not to replicate – that is the question: how to tackle nonlinear responses in ecological experiments

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DOI	10.1111/ele.13134
	To replicate, or not to replicate – that is the question: how to tackle nonlinear responses in ecological experiments
	Kreyling J.; Schweiger A.H.; Bahn M.; Ineson P.; Migliavacca M.; Morel-Journel T.; Christiansen J.R.; Schtickzelle N.; Larsen K.S.
发表日期	2018
ISSN	1461023X
卷号	21 期号:11
英文摘要	A fundamental challenge in experimental ecology is to capture nonlinearities of ecological responses to interacting environmental drivers. Here, we demonstrate that gradient designs outperform replicated designs for detecting and quantifying nonlinear responses. We report the results of (1) multiple computer simulations and (2) two purpose-designed empirical experiments. The findings consistently revealed that unreplicated sampling at a maximum number of sampling locations maximised prediction success (i.e. the R² to the known truth) irrespective of the amount of stochasticity and the underlying response surfaces, including combinations of two linear, unimodal or saturating drivers. For the two empirical experiments, the same pattern was found, with gradient designs outperforming replicated designs in revealing the response surfaces of underlying drivers. Our findings suggest that a move to gradient designs in ecological experiments could be a major step towards unravelling underlying response patterns to continuous and interacting environmental drivers in a feasible and statistically powerful way. © 2018 John Wiley & Sons Ltd/CNRS
英文关键词	Climate change experiments; experimental design; replication; residuals; stochasticity
语种	英语
scopus关键词	computer simulation; ecology; ecosystem; Computer Simulation; Ecology; Ecosystem
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/121237
作者单位	Experimental Plant Ecology, Institute for Botany and Landscape Ecology, Greifswald University, Soldmannstraße 15, Greifswald, D-17487, Germany; Plant Ecology, Bayreuth, Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Universitaetsstr. 30, Bayreuth, 95447, Germany; Institute of Ecology, University of Innsbruck, Sternwartestr. 15, Innsbruck, 6020, Austria; Department of Biology, University of York, Heslington, York YO10 5DD, United Kingdom; Max Planck Institute for Biogeochemistry, Biogeochemical Integration Department, Hans Knöll Straße, 10, Jena, Germany; Earth and Life Institute, Université catholique de Louvain, Croix du sud 4/L7.07.04, Louvain-la-Neuve, 1348, Belgium; Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23Frederiksberg C 1958, Denmark
推荐引用方式 GB/T 7714	Kreyling J.,Schweiger A.H.,Bahn M.,等. To replicate, or not to replicate – that is the question: how to tackle nonlinear responses in ecological experiments[J],2018,21(11).
APA	Kreyling J..,Schweiger A.H..,Bahn M..,Ineson P..,Migliavacca M..,...&Larsen K.S..(2018).To replicate, or not to replicate – that is the question: how to tackle nonlinear responses in ecological experiments.Ecology Letters,21(11).
MLA	Kreyling J.,et al."To replicate, or not to replicate – that is the question: how to tackle nonlinear responses in ecological experiments".Ecology Letters 21.11(2018).