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1 September 2012 High Shrew Diversity on Alaska's Seward Peninsula: Community Assembly and Environmental Change
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Abstract

In September 2010, 6 species of shrews (genus: Sorex) were collected at a single locality on the Seward Peninsula of Alaska. Such high sympatric diversity within a single mammalian genus is seldom realized. This phenomenon at high latitudes highlights complex Arctic community dynamics that reflect significant turnover through time as a consequence of environmental change. Each of these shrew species occupies a broad geographic distribution collectively spanning the entire Holarctic, although the study site lies within Eastern Beringia, near the periphery of all individual ranges. A review of published genetic evidence reflects a depauperate shrew community within ice-free Beringia through the last glaciation, and recent assembly of current diversity during the Holocene.

Andrew G. Hope "High Shrew Diversity on Alaska's Seward Peninsula: Community Assembly and Environmental Change," Northwestern Naturalist 93(2), (1 September 2012). https://doi.org/10.1898/nwn11-26.1
Received: 22 December 2011; Accepted: 1 April 2012; Published: 1 September 2012
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