DOI: 10.1111/gcb.12013
论文题名: Climate change, phenology, and habitat degradation: Drivers of gosling body condition and juvenile survival in lesser snow geese
作者: Aubry L.M. ; Rockwell R.F. ; Cooch E.G. ; Brook R.W. ; Mulder C.P.H. ; Koons D.N.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 1 起始页码: 149
结束页码: 160
语种: 英语
英文关键词: Arctic oscillation index
; Burnham model
; Capture-mark-recapture
; Chen caerulescens caerulescens
; Growing days
; Phenological mismatch
; Survival
Scopus关键词: abundance
; arctic environment
; Arctic Oscillation
; body condition
; breeding population
; climate change
; degradation
; juvenile
; migratory species
; numerical model
; phenology
; population dynamics
; population growth
; trophic cascade
; waterfowl
; animal
; article
; climate change
; ecosystem
; goose
; physiology
; survival rate
; Animals
; Climate Change
; Ecosystem
; Geese
; Survival Rate
; Canada
; Hudson Bay Lowlands
; Anser
; Chen
; Chen caerulescens caerulescens
英文摘要: Nesting migratory geese are among the dominant herbivores in (sub) arctic environments, which have undergone unprecedented increases in temperatures and plant growing days over the last three decades. Within these regions, the Hudson Bay Lowlands are home to an overabundant breeding population of lesser snow geese that has dramatically damaged the ecosystem, with cascading effects at multiple trophic levels. In some areas the overabundance of geese has led to a drastic reduction in available forage. In addition, warming of this region has widened the gap between goose migration timing and plant green-up, and this 'mismatch' between goose and plant phenologies could in turn affect gosling development. The dual effects of climate change and habitat quality on gosling body condition and juvenile survival are not known, but are critical for predicting population growth and related degradation of (sub) arctic ecosystems. To address these issues, we used information on female goslings marked and measured between 1978 and 2005 (4125 individuals). Goslings that developed within and near the traditional center of the breeding colony experienced the effects of long-term habitat degradation: body condition and juvenile survival declined over time. In newly colonized areas, however, we observed the opposite pattern (increase in body condition and juvenile survival). In addition, warmer than average winters and summers resulted in lower gosling body condition and first-year survival. Too few plant 'growing days' in the spring relative to hatch led to similar results. Our assessment indicates that geese are recovering from habitat degradation by moving to newly colonized locales. However, a warmer climate could negatively affect snow goose populations in the long-run, but it will depend on which seasons warm the fastest. These antagonistic mechanisms will require further study to help predict snow goose population dynamics and manage the trophic cascade they induce. © 2012 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62562
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Wildland Resources, Berryman Institute, Utah State University, 5230 OLD Main Hill, Logan, UT 84322-5230, United States; Division of Vertebrate Zoology, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024, United States; Department of Natural Resources, Cornell University, Fernow Hall, Ithaca, NY 14853, United States; Ontario Ministry of Natural Resources, 2140 East Bank Drive, Peterborough, ON K9J 7B8, Canada; Institute of Arctic Biology, Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK 99775, United States
Recommended Citation:
Aubry L.M.,Rockwell R.F.,Cooch E.G.,et al. Climate change, phenology, and habitat degradation: Drivers of gosling body condition and juvenile survival in lesser snow geese[J]. Global Change Biology,2013-01-01,19(1)