气候变化领域集成服务门户(CCPortal): Optimal germination timing in unpredictable environments: the importance of dormancy for both among- and within-season variation

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DOI	10.1111/ele.13461
	Optimal germination timing in unpredictable environments: the importance of dormancy for both among- and within-season variation
	ten Brink H.; Gremer J.R.; Kokko H.
发表日期	2020
ISSN	1461023X
英文摘要	For organisms living in unpredictable environments, timing important life-history events is challenging. One way to deal with uncertainty is to spread the emergence of offspring across multiple years via dormancy. However, timing of emergence is not only important among years, but also within each growing season. Here, we study the evolutionary interactions between germination strategies that deal with among- and within-season uncertainty. We use a modelling approach that considers among-season dormancy and within-season germination phenology of annual plants as potentially independent traits and study their separate and joint evolution in a variable environment. We find that higher among-season dormancy selects for earlier germination within the growing season. Furthermore, our results indicate that more unpredictable natural environments can counter-intuitively select for less risk-spreading within the season. Furthermore, strong priority effects select for earlier within-season germination phenology which in turn increases the need for bet hedging through among-season dormancy. © 2020 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd
英文关键词	Bet hedging; competition; desert annuals; dormancy; environmental variation; evolution; germination phenology
语种	英语
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/120970
作者单位	Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland; Department of Evolution and Ecology, University of California, Davis, CA 95616, United States
推荐引用方式 GB/T 7714	ten Brink H.,Gremer J.R.,Kokko H.. Optimal germination timing in unpredictable environments: the importance of dormancy for both among- and within-season variation[J],2020.
APA	ten Brink H.,Gremer J.R.,&Kokko H..(2020).Optimal germination timing in unpredictable environments: the importance of dormancy for both among- and within-season variation.Ecology Letters.
MLA	ten Brink H.,et al."Optimal germination timing in unpredictable environments: the importance of dormancy for both among- and within-season variation".Ecology Letters (2020).