DOI: 10.1111/ele.13634
论文题名: Environmental change reduces body condition, but not population growth, in a high-arctic herbivore
作者: Layton-Matthews K. ; Grøtan V. ; Hansen B.B. ; Loonen M.J.J.E. ; Fuglei E. ; Childs D.Z.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期: 2 起始页码: 227
结束页码: 238
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166871
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
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]. Ecology Letters,2021-01-01,24(2)