DOI: 10.1111/gcb.12882
论文题名: Too much of a good thing: Sea ice extent may have forced emperor penguins into refugia during the last glacial maximum
作者: [无可用作者姓名]
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 6 起始页码: 2215
结束页码: 2226
语种: 英语
英文关键词: Aptenodytes forsteri
; Antarctica
; Climate change ecology
; Molecular ecology
; Paleoecology
; Phylogeography
; Polynya
; Ross Sea
Scopus关键词: climate effect
; climate variation
; ice retreat
; Last Glacial Maximum
; paleoclimate
; paleoecology
; phylogeography
; population structure
; refugium
; sea ice
; seabird
; Adelie Coast
; Antarctica
; East Antarctica
; Ross Sea
; Southern Ocean
; Aptenodytes forsteri
; mitochondrial DNA
; animal
; Antarctica
; climate change
; evolution
; fossil
; genetics
; ice cover
; penguin
; phylogeography
; physiology
; population density
; refugium
; Animals
; Antarctic Regions
; Biological Evolution
; Climate Change
; DNA, Mitochondrial
; Fossils
; Ice Cover
; Phylogeography
; Population Density
; Refugium
; Spheniscidae
英文摘要: The relationship between population structure and demographic history is critical to understanding microevolution and for predicting the resilience of species to environmental change. Using mitochondrial DNA from extant colonies and radiocarbon-dated subfossils, we present the first microevolutionary analysis of emperor penguins (Aptenodytes forsteri) and show their population trends throughout the last glacial maximum (LGM, 19.5-16 kya) and during the subsequent period of warming and sea ice retreat. We found evidence for three mitochondrial clades within emperor penguins, suggesting that they were isolated within three glacial refugia during the LGM. One of these clades has remained largely isolated within the Ross Sea, while the two other clades have intermixed around the coast of Antarctica from Adélie Land to the Weddell Sea. The differentiation of the Ross Sea population has been preserved despite rapid population growth and opportunities for migration. Low effective population sizes during the LGM, followed by a rapid expansion around the beginning of the Holocene, suggest that an optimum set of sea ice conditions exist for emperor penguins, corresponding to available foraging area. © 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/61765
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
[无可用作者姓名]. Too much of a good thing: Sea ice extent may have forced emperor penguins into refugia during the last glacial maximum[J]. Global Change Biology,2015-01-01,21(6)