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Comparative demography of sea otter populations

January 1, 1996

Population trends are poorly documented and demographic information is typically lacking for many carnivorous mammals. The sea otter (Enhydru lutris) has a well known history of decline and recovery, and while many other species have declined as precipitously, few have recovered so spectacularly. Generally speaking, northern populations (remnants within the range of E. l. lutris and E. l. kenyoni) have recovered at high rates while recovery of the southern sea olter (E. I. nereis), which is listed as legally threatened under the Endangered Species Act (ESA), has progressed more slowly. Our purpose is to contrast trends in abundance and demographic patterns between Southern California and northern (Washington, British Columbia, Alaska, and Asia) sea otter populations. Specifically, we provide (1) a brief review of the main findings to date: (2) a summary of ongoing and planned studies; and (3) recommendations for future research. A more detailed account of these and other issues concerning the conservation and management of sea otters is provided in the U.S. Fish and Wildlife Service's Recovery Plan for the Califomia Sea Otter (U.S. Fish and Wildlife Service 1996).

Citation Information

Publication Year 1996
Title Comparative demography of sea otter populations
Authors James A. Estes, Daniel F. Doak, James L. Bodkin, Ronald J. Jameson, Daniel H. Monson, Jon Watt, M. Tim Tinker
Publication Type Article
Publication Subtype Journal Article
Series Title Endangered Species UPDATE
Index ID 2002255
Record Source USGS Publications Warehouse
USGS Organization Western Ecological Research Center

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