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Holocene deglaciati...
Holocene deglaciation drove rapid genetic diversification of Atlantic walrus
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- Ruiz-Puerta, Emily J. (author)
- University of Copenhagen,University of Groningen
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- Keighley, Xénia (author)
- Bureau of Meteorology, Australia,University of Copenhagen
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- Desjardins, Sean P. A. (author)
- Canadian Museum of Nature,University of Groningen
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- Gotfredsen, Anne Birgitte (author)
- University of Copenhagen
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- En Pan, Shyong (author)
- Canadian Museum of Nature
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- Star, Bastiaan (author)
- University of Oslo
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- Boessenkool, Sanne (author)
- University of Oslo
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- Barrett, James H. (author)
- NTNU University Museum,University of Cambridge
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- McCarthy, Morgan L. (author)
- University of Copenhagen
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- Andersen, Liselotte W. (author)
- Aarhus University
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- Born, Erik W. (author)
- Greenland Institute of Natural Resources
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- Howse, Lesley R. (author)
- University of Toronto
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- Szpak, Paul (author)
- Trent University
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- Pálsson, Snæbjörn (author)
- University of Iceland
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- Malmquist, Hilmar J. (author)
- Icelandic Museum of Natural History
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- Rufolo, Scott (author)
- Canadian Museum of Nature
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- Jordan, Peter (author)
- Lund University,Lunds universitet,Arkeologi,Institutionen för arkeologi och antikens historia,Institutioner,Humanistiska och teologiska fakulteterna,Archaeology,Department of Archaeology and Ancient History,Departments,Joint Faculties of Humanities and Theology,Hokkaido University
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- Olsen, Morten Tange (author)
- University of Copenhagen,Natural History Museum of Denmark
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(creator_code:org_t)
- 2023
- 2023
- English 11 s.
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In: Proceedings of the Royal Society B: Biological Sciences. - 1471-2954. ; 290:2007, s. 1-11
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Abstract
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- Rapid global warming is severely impacting Arctic ecosystems and is predicted to transform the abundance, distribution and genetic diversity of Arctic species, though these linkages are poorly understood. We address this gap in knowledge using palaeogenomics to examine how earlier periods of global warming influenced the genetic diversity of Atlantic walrus (Odobenus rosmarus rosmarus), a species closely associated with sea ice and shallow-water habitats. We analysed 82 ancient and historical Atlantic walrus mitochondrial genomes (mitogenomes), including now-extinct populations in Iceland and the Canadian Maritimes, to reconstruct the Atlantic walrus’ response to Arctic deglaciation. Our results demonstrate that the phylogeography and genetic diversity of Atlantic walrus populations was initially shaped by the Last Glacial Maximum (LGM), surviving in distinct glacial refugia, and subsequently expanding rapidly in multiple migration waves during the late Pleistocene and early Holocene. The timing of diversification and establishment of distinct populations corresponds closely with the chronology of the glacial retreat, pointing to a strong link between walrus phylogeography and sea ice. Our results indicate that accelerated ice loss in the modern Arctic may trigger further dispersal events, likely increasing the connectivity of northern stocks while isolating more southerly stocks putatively caught in small pockets of suitable habitat.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- HUMANIORA -- Historia och arkeologi -- Arkeologi (hsv//swe)
- HUMANITIES -- History and Archaeology -- Archaeology (hsv//eng)
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- art (subject category)
- ref (subject category)
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- By the author/editor
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Ruiz-Puerta, Emi ...
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Keighley, Xénia
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Desjardins, Sean ...
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Gotfredsen, Anne ...
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En Pan, Shyong
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Star, Bastiaan
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show more...
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Boessenkool, San ...
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Barrett, James H ...
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McCarthy, Morgan ...
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Andersen, Liselo ...
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Born, Erik W.
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Howse, Lesley R.
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Szpak, Paul
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Pálsson, Snæbjör ...
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Malmquist, Hilma ...
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Rufolo, Scott
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Jordan, Peter
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Olsen, Morten Ta ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Evolutionary Bio ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Climate Research
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- HUMANITIES
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HUMANITIES
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and History and Arch ...
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and Archaeology
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Proceedings of t ...
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Lund University