DOI: 10.1111/ele.13835
论文题名: Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation
作者: 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.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
语种: 英语
中文关键词: age dependence
; density dependence
; fast–slow axis
; life-history theory
; pace-of-life syndromes
; trade-offs
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166760
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
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]. Ecology Letters,2021-01-01