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Serial population e...
Serial population extinctions in a small mammal indicate Late Pleistocene ecosystem instability
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Brace, Selina (author)
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- Palkopoulou, Eleftheria (author)
- Stockholms universitet,Zoologiska institutionen,Swedish Museum of National History, Sweden
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- Dalen, Love (author)
- Naturhistoriska riksmuseet,Enheten för bioinformatik och genetik
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Lister, Adrian M. (author)
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Miller, Rebecca (author)
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Otte, Marcel (author)
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Germonpre, Mietje (author)
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Blockley, Simon P. E. (author)
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Stewart, John R. (author)
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Barnes, Ian (author)
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(creator_code:org_t)
- 2012-11-26
- 2012
- English.
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In: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 109:50, s. 20532-20536
- Related links:
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https://www.pnas.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- The Late Pleistocene global extinction of many terrestrial mammal species has been a subject of intensive scientific study for over a century, yet the relative contributions of environmental changes and the global expansion of humans remain unresolved. A defining component of these extinctions is a bias toward large species, with the majority of small-mammal taxa apparently surviving into the present. Here, we investigate the population-level history of a key tundra-specialist small mammal, the collared lemming (Dicrostonyx torquatus), to explore whether events during the Late Pleistocene had a discernible effect beyond the large mammal fauna. Using ancient DNA techniques to sample across three sites in North-West Europe, we observe a dramatic reduction in genetic diversity in this species over the last 50,000 y. We further identify a series of extinction-recolonization events, indicating a previously unrecognized instability in Late Pleistocene small-mammal populations, which we link with climatic fluctuations. Our results reveal climate-associated, repeated regional extinctions in a keystone prey species across the Late Pleistocene, a pattern likely to have had an impact on the wider steppe-tundra community, and one that is concordant with environmental change as a major force in structuring Late Pleistocene biodiversity.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
Keyword
- megafauna
- palaeogenetics
- palaeoclimate
- modelling
- Systematic Zoology
- zoologisk systematik och evolutionsforskning
- Diversity of life
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Brace, Selina
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Palkopoulou, Ele ...
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Dalen, Love
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Lister, Adrian M ...
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Miller, Rebecca
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Otte, Marcel
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show more...
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Germonpre, Mietj ...
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Blockley, Simon ...
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Stewart, John R.
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Barnes, Ian
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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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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Zoology
- Articles in the publication
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Proceedings of t ...
- By the university
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Stockholm University
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Swedish Museum of Natural History