globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13286
论文题名:
Differential plasticity of size and mass to environmental change in a hibernating mammal
作者: Canale C.I.; Ozgul A.; Allainé D.; Cohas A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期:10
起始页码: 3286
结束页码: 3303
语种: 英语
英文关键词: Alpine marmot ; body size ; climate change ; food availability ; French Alps ; normalized difference vegetation index ; phenotypic plasticity ; reaction norm
Scopus关键词: annual variation ; body size ; climate change ; food availability ; life history ; mammal ; NDVI ; phenotypic plasticity ; population modeling ; Alps ; France ; Mammalia ; Marmota marmota ; Marmota marmota marmota
英文摘要: Morphological changes following changes in species' distribution and phenology have been suggested to be the third universal response to global environmental change. Although structural size and body mass result from different genetic, physiological, and ecological mechanisms, they are used interchangeably in studies evaluating population responses to environmental change. Using a 22-year (1991–2013) dataset including 1768 individuals, we investigated the coupled dynamics of size and mass in a hibernating mammal, the Alpine marmot (Marmota marmota), in response to local environmental conditions. We (i) quantified temporal trends in both traits, (ii) determined the environmental drivers of trait dynamics, and (iii) identified the life-history processes underlying the observed changes. Both phenotypic traits were followed through life: we focused on the initial trait value (juvenile size and mass) and later-life development (annual change in size [Δsize] and mass [Δmass]). First, we demonstrated contrasting dynamics between size and mass over the study period. Juvenile size and subsequent Δsize showed significant declines, whereas juvenile mass and subsequent Δmass remained constant. As a consequence of smaller size associated with a similar mass, individuals were in better condition in recent years. Second, size and mass showed different sensitivities to environmental variables. Both traits benefited from early access to resources in spring, whereas Δmass, particularly in early life, also responded to summer and winter conditions. Third, the interannual variation in both traits was caused by changes in early life development. Our study supports the importance of considering the differences between size and mass responses to the environment when evaluating the mechanisms underlying population dynamics. The current practice of focusing on only one trait in population modeling can lead to misleading conclusions when evaluating species' resilience to contemporary climate change. © 2016 John Wiley & Sons Ltd
资助项目: We warmly thank all students and Earthwatch volunteers involved in catching the marmots and the authorities of the Vanoise National Park for granting us permission to work in the Grande Sassière Nature Reserve. The fieldwork conducted complies with French laws. All the handling and sampling were done by DA and AC who are authorized for experimentation with animals by the French Ministry of Agriculture and Fisheries (diploma no. R45GRETAF110). The protocol was approved by the ethical committee of the University Claude Bernard Lyon 1 no. BH2012-92 V1. Our research was supported by the ‘Agence Nationale de la Recherche’ (ANR, project ANR-13-JSV7-0005). CIC was supported by an Intra-European Marie Curie Postdoctoral Fellowship (# 330282), an AXA research fund and a Forschungskredit of the University of Zurich (# 14097), AO by an ERC Starting Grant (# 337785). We greatly acknowledge the support of the Centre for Advanced Study in Oslo, Norway that funded and hosted the research project (‘Climate effects on harvested large mammal populations’) in which AC was participating during the academic year of 2015/16.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61286
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich, Switzerland; UMR-CNRS 5558, Laboratoire de Biométrie et Biologie Evolutive, Université Claude Bernard, Lyon 1, 43 Bd. du 11 novembre 1918, Villeurbanne Cedex, France

Recommended Citation:
Canale C.I.,Ozgul A.,Allainé D.,et al. Differential plasticity of size and mass to environmental change in a hibernating mammal[J]. Global Change Biology,2016-01-01,22(10)
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