Climate change and contrasting plasticity in timing of a two-step migration episode of an Arctic-nesting avian herbivore
Climate change and contrasting plasticity in timing of a two-step migration episode of an Arctic-nesting avian herbivore作者机构：Department of Bioscience Aarhus University Kalo Grenavej 14 DK-8410 Ronde Denmark Centre for Ecology and Conservation College of Life and Environmental Sciences University of Exeter Cornwall CampusTR10 9EZ UK Wildfowl and Wetlands Trust Slimbridge Gloucester GL2 7BT UK Wildfowl and Wetlands Trust Eastpark Farm Caerlaverock Dumfriesshire DGI 4RS UK Greenland White-fronted Goose Study c/o Spring Meadows Taylors Green Warmington Peterborough PE8 6TG UK National Parks and Wildlife Service Wexford Wildfowl Reserve North Slob Wexford Ireland
出 版 物：《Current Zoology》 (动物学报（英文版）)
年 卷 期：2014年第60卷第2期
页 面：233-242页
核心收录：
学科分类：090502[农学-动物营养与饲料科学] 07[理学] 070601[理学-气象学] 0905[农学-畜牧学] 09[农学] 0706[理学-大气科学]
基 金：Beckett Foundation British Ornithologists' Union Canadian Wildlife Service Dansk Jagtforenings Jubilaeumsfund Japetus Steenstrups Legat Mansons Rejsefond Nordisk Forskerutdanningsakademi Palms Legat Peter Scott Trust for Education and Research in Conservation National Parks and Wildlife Service of the Irish government's Heritage Service through office of John Wilson National Parks and Wildlife Service of the Irish government's Heritage Service through office of David Tierney
主 题：Anser albifronsflavirostris Climate mismatch Greenland white-fronted geese Migration phenology Vernalmigration
摘 要：Greenland white-fronted geese Anser albifrons flavirostris wintering in Britain and Ireland migrate over the sea for 700-1200 km to stage 3-5 weeks in Iceland in spring, continuing a similar distance over the sea and Greenland Ice Cap to West Greenland breeding grounds. During 1969 to 2012, the geese advanced the mean departure date from Ireland by 15 days, during which time also they attained threshold fat stores earlier as well as departing in fatter condition. Over that period, Iceland spring-staging geese shifted from consuming underground plant storage organs to grazing managed hayfields, which provide fresh grass growth despite sub-zero temperatures, when traditional natural foods are inaccessible in frozen substrates. In 2012 and 2013, geese arrived three weeks earlier to Iceland, in fatter condition and accumulated fat significantly slower than in 1997-1999 and 2007. Although geese accumulated sufficient fat stores earlier in Iceland in 2007, 2012 and 2013, they departed around the same date as in 1997-1999, prolonging spring staging by three weeks. Plasticity in winter departure dates is likely due to improved winter feeding conditions （enabling earlier departure in better condition） and a novel predictable food resource in Iceland. Greenland white-fronted geese attained threshold fat stores in Iceland earlier, but remained rather than departing earlier to Greenland. Despite arriving earlier in Iceland, arrival dates on the breeding areas have not changed since the 1880s, presumably because of relatively constant cool springs and heavy snowfall in West Greenland during recent years [Current Zoology 60 （2）： 233-242, 2014].
维普期刊数据库