DOI: 10.1111/gcb.12811
论文题名: Arctic warming: Nonlinear impacts of sea-ice and glacier melt on seabird foraging
作者: Grémillet D. ; Fort J. ; Amélineau F. ; Zakharova E. ; Le Bot T. ; Sala E. ; Gavrilo M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 3 起始页码: 1116
结束页码: 1123
语种: 英语
英文关键词: Arctic climate change
; Arctic marine fauna
; Behavioural plasticity
; Cryosphere
; Historical data
; Little auk
Scopus关键词: arctic environment
; climate effect
; cryosphere
; environmental conditions
; foraging behavior
; glacier dynamics
; sea ice
; seabird
; warming
; Arkhangelsk [Russian Federation]
; Franz Josef Land
; Russian Federation
; Alle alle
; Aves
; Pinguinus
; anatomy and histology
; animal
; Arctic
; biological model
; Charadriiformes
; climate change
; feeding behavior
; growth, development and aging
; ice cover
; nonlinear system
; physiology
; remote sensing
; Russian Federation
; Animals
; Arctic Regions
; Charadriiformes
; Climate Change
; Feeding Behavior
; Ice Cover
; Models, Biological
; Nonlinear Dynamics
; Remote Sensing Technology
; Russia
英文摘要: Arctic climate change has profound impacts on the cryosphere, notably via shrinking sea-ice cover and retreating glaciers, and it is essential to evaluate and forecast the ecological consequences of such changes. We studied zooplankton-feeding little auks (Alle alle), a key sentinel species of the Arctic, at their northernmost breeding site in Franz-Josef Land (80°N), Russian Arctic. We tested the hypothesis that little auks still benefit from pristine arctic environmental conditions in this remote area. To this end, we analysed remote sensing data on sea-ice and coastal glacier dynamics collected in our study area across 1979-2013. Further, we recorded little auk foraging behaviour using miniature electronic tags attached to the birds in the summer of 2013, and compared it with similar data collected at three localities across the Atlantic Arctic. We also compared current and historical data on Franz-Josef Land little auk diet, morphometrics and chick growth curves. Our analyses reveal that summer sea-ice retreated markedly during the last decade, leaving the Franz-Josef Land archipelago virtually sea-ice free each summer since 2005. This had a profound impact on little auk foraging, which lost their sea-ice-associated prey. Concomitantly, large coastal glaciers retreated rapidly, releasing large volumes of melt water. Zooplankton is stunned by cold and osmotic shock at the boundary between glacier melt and coastal waters, creating new foraging hotspots for little auks. Birds therefore switched from foraging at distant ice-edge localities, to highly profitable feeding at glacier melt-water fronts within <5 km of their breeding site. Through this behavioural plasticity, little auks maintained their chick growth rates, but showed a 4% decrease in adult body mass. Our study demonstrates that arctic cryosphere changes may have antagonistic ecological consequences on coastal trophic flow. Such nonlinear responses complicate modelling exercises of current and future polar ecosystem dynamics. © 2015 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61580
Appears in Collections: 影响、适应和脆弱性
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作者单位: CEFE UMR 5175, CNRS - Université de Montpellier - Université Paul-Valéry Montpellier - EPHE, 1919 route de Mende, Montpellier, France; FitzPatrick Institute, DST/NRF Excellence Centre at the University of Cape Town, Rondebosch, South Africa; LIENSs UMR 7266, CNRS - Université La Rochelle, 2 rue Olympe de Gouges, La Rochelle, France; LEGOS UMR5566, CNRS - CNES - IRD - Université Toulouse III), 14 Avenue Edouard Belin, Toulouse, France; State Oceanography Institute, ul. Beringa 38, St. Petersburg, Russian Federation; National Geographic Society, Washington, DC, United States; Centre d'Estudis Avançats de Blanes (CEAB-CSIC), Girona, Spain; National Park Russian Arctic, Sovetskikh Kosmonavtov Avenue, 57, Archangelsk, Russian Federation
Recommended Citation:
Grémillet D.,Fort J.,Amélineau F.,et al. Arctic warming: Nonlinear impacts of sea-ice and glacier melt on seabird foraging[J]. Global Change Biology,2015-01-01,21(3)