Northern fur seal demography studies at San Miguel Island, California conducted from 1975-10-07 to 2014-09-26 (NCEI Accession 0141240)

• Main Author: Anthony Orr
• Format: Dataset
• Language: unknown
• Published: NOAA NCEI Environmental Data Archive 2016
• Subjects: DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce; DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce; 0141240; 141240; ANIMALS - INDIVIDUAL - AGE; ANIMALS - INDIVIDUAL - MASS; BIOLOGICAL DATA; cetacean; girth; LATITUDE; LONGITUDE; MARINE MAMMALS; MARINE SPECIES INVENTORY; binocular; biota surveys; scale; visual observation; biological; in situ; visual estimate; US DOC; NOAA; NMFS; Alaska Fisheries Science Center; National Marine Mammal Laboratory; Gulf of the Farallones National Marine Sanctuary; Monterey Bay National Marine Sanctuary; North Pacific Ocean; oceanography; Pacific; San Miguel; Alaska; Callorhinus ursinus; Northern fur seal
• Online Access: https://search.dataone.org/view/{A56A9787-19B5-444C-9474-4D11DA040904}

The National Marine Mammal Laboratories' California Current Ecosystem Program (AFSC/NOAA) initiated a long-term marking program of northern fur seals (Callorhinus ursinus) at San Miguel Island, California in 1975. A sample of up to 300 pups has been tagged in the foreflippers with various types and colors of tags each year between 1975 and the present. Resighting surveys for marked animals are conducted annually at summer breeding sites. Resightings are also obtained from the public when animals are observed on beaches or in fisheries. The data are used in mark-recapture models to estimate the age and sex specific vital parameters of the population and to describe age and sex specific reproductive behavior and seasonal movements of animals throughout their lives.