Spatial Habitat Use Patterns of Sea Otters in Coastal Washington
نویسندگان
چکیده
Polar Science Center, Applied Physics Laboratory, University of Washington, 1013 NE 40th Street, Seattle, WA 98105, USA (KLL) United States Geological Survey, Western Ecological Research Center, 7801 Folsom Boulevard, Suite 101, Sacramento, CA 95826, USA (RJJ [retired]) Department of Biological and Environmental Sciences, P.O. Box 65, Viikinkaari 1, FI-00014 University of Helsinki, Finland (EG) Washington Department of Fish and Wildlife, Wildlife Science Program, Marine Mammal Investigations, 7801 Phillips Road SW, Lakewood, WA 98498, USA (SJJ) Washington Department of Fish and Wildlife, Wildlife Diversity Program, 600 Capitol Way, Olympia, WA 98501-1091, USA (HA) Present address of RJJ: 392 N 7th Street, Philomath, OR 97370, USA (RJJ)
منابع مشابه
Prey choice and habitat use drive sea otter pathogen exposure in a resource-limited coastal system.
The processes promoting disease in wild animal populations are highly complex, yet identifying these processes is critically important for conservation when disease is limiting a population. By combining field studies with epidemiologic tools, we evaluated the relationship between key factors impeding southern sea otter (Enhydra lutris nereis) population growth: disease and resource limitation....
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Concentrations of organochlorine pesticides (DDTs, HCHs, and chlordanes), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), polycyclic aromatic hydrocarbons (PAHs), perfluorinated compounds (PFCs), and 20 trace elements were determined in livers of 3- to 5-year old stranded sea otters collected from the coastal waters of California, Washington, and Alaska (USA) and from ...
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Sea otters (Enhydra lutris) are keystone predators that consume a variety of benthic invertebrates, including the intertidal mussel, Mytilus californianus. By virtue of their competitive dominance, large size, and longevity, M. californianus are ecosystem engineers that form structurally complex beds that provide habitat for diverse invertebrate communities. We investigated whether otters affec...
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Focal observations of sea otter (Enhydra lutris kenyoni) foraging patterns and prey selection were collected in coastal Washington between 1993 and 1999. Records consisted of 13,847 individual dives from 841 feeding bouts ranging from 1 min to .4 h. Average dive time was 55 s 6 0.9 SE and average surface time was 45 s 6 2.3 SE, irrespective of dive success. At least 77% of all dives (n 1⁄4 10,6...
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We studied seasonal patterns of use of coastal resources by otters, simultaneously performing diet analyses and spraint counts (expressed as marking intensity, MI). In spite of the small size of the study area, two different sectors could be clearly identified, a sandy and a rocky one. We could also determine the origin (freshwater or coastal) of most prey types. Surveys were performed bimonthl...
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