Pup production of the California Stock of northern fur seals from 1969 to 2023 (NCEI Accession 0303532)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: October 04, 2025 | Last Modified: 2025-04-30T00:00:00.000+00:00

The Marine Mammal Laboratories' California Current Ecosystem Program (AFSC/NOAA) in collaboration with Point Blue Conservation Science initiated long-term studies to determine pup abundance of the California Stock of northern fur seals. The California Stock is comprised of northern fur seals inhabiting San Miguel Island (and Castle Rock, and islet ~1 km northwest) and the Farallon Islands (specifically, Southeast Island) off California. Pup production is the sum of the numbers of live pups and dead pups for a given pupping season. This in turn is used as index to estimate total population abundance. Population abundance is vital to knowing the status of a particular stock or the entire species, as well as knowing what factors are driving population trends. Metadata and datasets corresponding to these studies are reported in Stock Assessment Reports (SAR) for the U.S. Congress and other stakeholders.

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0303532 ANIMALS - INDIVIDUAL - COUNTS binoculars in situ NMFS/AFSC Marine Mammal Laboratory Point Blue Conservation Science NMFS/AFSC Marine Mammal Laboratory oceanography DOC/NOAA/NMFS/AFSC/MML > Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce aerial counts fur seal ground counts northern fur seal population abundance pup abundance BINOCULAR > BINOCULAR California Castle Rock Farallon Islands San Miguel Island 3LKHY4

Complete Metadata

describedByType	application/octet-steam
identifier	gov.noaa.nodc:0303532
issued	2025-04-30T00:00:00.000+00:00
landingPage	https://www.ncei.noaa.gov/contact
language	[]
references	[ "https://www.fisheries.noaa.gov/inport/item/75401" ]
rights	otherRestrictions
spatial	-117.0,32.0,-124.0,39.0
temporal	1969-05-01T00:00:00+00:00/2023-09-30T00:00:00+00:00

Location