Biogeographic and conservation implications of Late Quaternary pygmy rabbits (Brachylagus idahoensis) in eastern Washington

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Five implications of a biogeographic model of pygmy rabbits (Brachylagus idahoensis) in eastern Washington proposed in 1991 are confirmed by 11 new late-Quaternary records. Pygmy rabbits from eastern Oregon colonized eastern Washington during the late Pleistocene and occupied their largest range during the middle and late Holocene. Disjunction of the eastern Washington population from that in eastern Oregon occurred during at least the late Holocene. Nineteenth-century cattle grazing and 20th-century agricultural practices reduced habitat preferred by pygmy rabbits. Conservation of the small remaining population of pygmy rabbits will necessitate altered land use practices.

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ELECTRONIC FILE - Zoology