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DOI	10.1111/ele.13634
	Environmental change reduces body condition, but not population growth, in a high-arctic herbivore
	Layton-Matthews K.; Grøtan V.; Hansen B.B.; Loonen M.J.J.E.; Fuglei E.; Childs D.Z.
发表日期	2021
ISSN	1461023X
起始页码	227
结束页码	238
卷号	24 期号:2
英文摘要	Environmental change influences fitness-related traits and demographic rates, which in herbivores are often linked to resource-driven variation in body condition. Coupled body condition-demographic responses may therefore be important for herbivore population dynamics in fluctuating environments, such as the Arctic. We applied a transient Life-Table Response Experiment (‘transient-LTRE’) to demographic data from Svalbard barnacle geese (Branta leucopsis), to quantify their population-dynamic responses to changes in body mass. We partitioned contributions from direct and delayed demographic and body condition-mediated processes to variation in population growth. Declines in body condition (1980–2017), which positively affected reproduction and fledgling survival, had negligible consequences for population growth. Instead, population growth rates were largely reproduction-driven, in part through positive responses to rapidly advancing spring phenology. The virtual lack of body condition-mediated effects indicates that herbivore population dynamics may be more resilient to changing body condition than previously expected, with implications for their persistence under environmental change. © 2020 John Wiley & Sons Ltd.
关键词	Arctic barnacle goose climate change integral projection models life table response experiments population dynamics trait-mediated and modified effects transient LTRE
英文关键词	Branta leucopsis; Thoracica; animal; Arctic; goose; herbivory; population dynamics; population growth; population migration; season; Svalbard and Jan Mayen; Animal Migration; Animals; Arctic Regions; Geese; Herbivory; Population Dynamics; Population Growth; Seasons; Svalbard
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/204430
作者单位	Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway; Arctic Centre, University of Groningen, Groningen, Netherlands; Norwegian Polar Institute, Tromsø, Norway; Department of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom
推荐引用方式 GB/T 7714	Layton-Matthews K.,Grøtan V.,Hansen B.B.,et al. Environmental change reduces body condition, but not population growth, in a high-arctic herbivore[J],2021,24(2).
APA	Layton-Matthews K.,Grøtan V.,Hansen B.B.,Loonen M.J.J.E.,Fuglei E.,&Childs D.Z..(2021).Environmental change reduces body condition, but not population growth, in a high-arctic herbivore.Ecology Letters,24(2).
MLA	Layton-Matthews K.,et al."Environmental change reduces body condition, but not population growth, in a high-arctic herbivore".Ecology Letters 24.2(2021).