气候变化领域集成服务门户(CCPortal): Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation

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DOI	10.1111/ele.13835
	Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation
	Araya-Ajoy Y.G.; Niskanen A.K.; Froy H.; Ranke P.S.; Kvalnes T.; Rønning B.; Le Pepke M.; Jensen H.; Ringsby T.H.; Sæther B.-E.; Wright J.
发表日期	2021
ISSN	1461023X
英文摘要	Generation time determines the pace of key demographic and evolutionary processes. Quantified as the weighted mean age at reproduction, it can be studied as a life-history trait that varies within and among populations and may evolve in response to ecological conditions. We combined quantitative genetic analyses with age- and density-dependent models to study generation time variation in a bird metapopulation. Generation time was heritable, and males had longer generation times than females. Individuals with longer generation times had greater lifetime reproductive success but not a higher expected population growth rate. Density regulation acted on recruit production, suggesting that longer generation times should be favoured when populations are closer to carrying capacity. Furthermore, generation times were shorter when populations were growing and longer when populations were closer to equilibrium or declining. These results support classic theory predicting that density regulation is an important driver of the pace of life-history strategies. © 2021 The Authors. Ecology Letters published by John Wiley & Sons Ltd.
关键词	age dependence density dependence fast–slow axis life-history theory pace-of-life syndromes trade-offs
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/204319
作者单位	Centre for Biodiversity Dynamics (CBD), Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Ecology and Genetics Research Unit, University of Oulu, Oulu, Finland
推荐引用方式 GB/T 7714	Araya-Ajoy Y.G.,Niskanen A.K.,Froy H.,et al. Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation[J],2021.
APA	Araya-Ajoy Y.G..,Niskanen A.K..,Froy H..,Ranke P.S..,Kvalnes T..,...&Wright J..(2021).Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation.Ecology Letters.
MLA	Araya-Ajoy Y.G.,et al."Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation".Ecology Letters (2021).