The distribution, habitat, and conservation status of the Pacific Water Shrew, Sorex bendirii, in British Columbia

During an intensive survey of small mammals in the Lower Mainland of British Columbia, we recorded Pacific Water Shrews (Sorex bendirii) in three sites. We documented habitat and microhabitat characteristics of the sites. Pacific Water Shrews are riparian habitat specialists with a relatively small geographical range in Canada, which overlaps with one of the main urban centres in the country. Although there is little information on S. bendirii abundance and population trends, suitable habitat has disappeared at a rapid rate and most remaining habitat is highly modified, fragmented, and isolated. Recently the Pacific Water Shrew has been designated as threatened in Canada. Factors influencing S. bendirii populations are largely the result of rapid and unplanned urbanization and agricultural development.