DOI: 10.1111/gcb.13922
Scopus记录号: 2-s2.0-85041283396
论文题名: Climate change impacts on the conservation outlook of populations on the poleward periphery of species ranges: A case study of Canadian black-tailed prairie dogs (Cynomys ludovicianus)
作者: Stephens T. ; Wilson S.C. ; Cassidy F. ; Bender D. ; Gummer D. ; Smith D.H.V. ; Lloyd N. ; McPherson J.M. ; Moehrenschlager A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 2 起始页码: 836
结束页码: 847
语种: 英语
英文关键词: black-footed ferret
; black-tailed prairie dogs
; climate change
; Cynomys ludovicianus
; Grasslands
; northern periphery
; sylvatic plague
; wildlife management
Scopus关键词: climate change
; climate effect
; conservation management
; disease incidence
; drought
; future prospect
; grassland
; range size
; rodent
; species diversity
; survival
; Canada
; North America
; Cynomys ludovicianus
; Mustela nigripes
英文摘要: Given climate change, species' climatically suitable habitats are increasingly expected to shift poleward. Some imperilled populations towards the poleward edge of their species' range might therefore conceivably benefit from climate change. Interactions between climate and population dynamics may be complex, however, with climate exerting effects both indirectly via influence over food availability and more directly, via effects on physiology and its implications for survival and reproduction. A thorough understanding of these interactions is critical for effective conservation management. We therefore examine the relationship between climate, survival and reproduction in Canadian black-tailed prairie dogs, a threatened keystone species in an imperilled ecosystem at the northern edge of the species' range. Our analyses considered 8 years of annual mark–recapture data (2007–2014) in relation to growing degree days, precipitation, drought status and winter severity, as well as year, sex, age and body mass. Survival was strongly influenced by the interaction of drought and body mass class, and winter temperature severity. Female reproductive status was associated with the interaction of growing degree days and growing season precipitation, with spring precipitation and with winter temperature severity. Results related to body mass suggested that climatic variables exerted their effects via regulation of food availability with potential linked effects of food quality, immunological and behavioural implications, and predation risk. Predictions of future increases in drought conditions in North America's grassland ecosystems have raised concerns for the outlook of Canadian black-tailed prairie dogs. Insights gained from the analyses, however, point to mitigating species management options targeted at decoupling the mechanisms by which climate exerts its negative influence. Our approach highlights the importance of understanding the interaction between climate and population dynamics in peripheral populations whose viability might ultimately determine their species' ability to track climatically suitable space. © 2017 The Authors. Global Change Biology 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/110561
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Centre for Conservation Research, Calgary Zoological Society, Calgary, AB, Canada; Department of Biological Sciences, University of Calgary, Calgary, AB, Canada; Department of Geography, University of Calgary, Calgary, AB, Canada; Natural Resource Conservation Branch, Parks Canada Agency, Calgary, AB, Canada; Wildland Consultants Ltd, Christchurch, New Zealand
Recommended Citation:
Stephens T.,Wilson S.C.,Cassidy F.,et al. Climate change impacts on the conservation outlook of populations on the poleward periphery of species ranges: A case study of Canadian black-tailed prairie dogs (Cynomys ludovicianus)[J]. Global Change Biology,2018-01-01,24(2)