gov.noaa.nmfs.inport:66326 eng UTF8 dataset flat files Southwest Fisheries Science Center (858)546-7000 8901 La Jolla Shores Dr. La Jolla CA 92037 USA https://swfsc.noaa.gov/ WWW:LINK-1.0-http--link Website Website for this organization information 8:00-16:30 resourceProvider Krause, Douglas douglas.krause@noaa.gov pointOfContact 2026-03-04T19:17:18 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) Rapid Population Collapse of a Key Marine Predator in the Northern Antarctic Peninsula - Antarctic Fur Seal Population Dynamics 2022-01-04 creation 2022-01-04 revision 2022-01-03 publication NOAA/NMFS/EDM 66326 DOI Registration Authority 2022-01-03 inForce 10.3389/fmars.2021.796488 https://www.fisheries.noaa.gov/inport/item/66326 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://www.fisheries.noaa.gov/about/antarctic-ecosystem-research-division-southwest-fisheries-science-center WWW:LINK-1.0-http--link U.S. Antarctic Marine Living Resources (US-AMLR) Program NOAA, NMFS, SWFSC, Antarctic Ecosystem Research Division download tableDigital Krause DJ, Bonin CA, Goebel ME, Reiss CS and Watters GM (2022) The Rapid Population Collapse of a Key Marine Predator in the Northern Antarctic Peninsula Endangers Genetic Diversity and Resilience to Climate Change. Front. Mar. Sci. 8:796488. doi: 10.3389/fmars.2021.796488 Antarctic fur seals (AFS) are an ecologically important predator and a focal indicator species for ecosystem-based Antarctic fisheries management. This species suffered intensive anthropogenic exploitation until the early 1900s, but recolonized most of its former distribution, including the southern-most colony at Cape Shirreff, South Shetland Islands (SSI). The IUCN describes a single, global AFS population of least concern; however, extensive genetic analyses clearly identify four distinct breeding stocks, including one in the SSI. To update the population status of SSI AFS, we analyzed 20 years of field-based data including population counts, body size and condition, natality, recruitment, foraging behaviors, return rates, and pup mortality at the largest SSI colony. Our findings show a precipitous decline in AFS abundance (86% decrease since 2007), likely driven by leopard seal predation (increasing since 2001, p << 0.001) and potentially worsening summer foraging conditions. We estimated that leopard seals consumed an average of 69.3% (range: 50.3–80.9%) of all AFS pups born each year since 2010. AFS foraging-trip durations, an index of their foraging habitat quality, were consistent with decreasing krill and fish availability. Significant improvement in the age-specific over-winter body condition of AFS indicates that observed population declines are driven by processes local to the northern Antarctic Peninsula. The loss of SSI AFS would substantially reduce the genetic diversity of the species, and decrease its resilience to climate change. There is an urgent need to reevaluate the conservation status of Antarctic fur seals, particularly for the rapidly declining SSI population. To provide empirical data documenting the rapid decline of Antarctic Fur Seals at Cape Shirreff, as well as the important genetic diversity of this population. US Antarctic Marine Living Resources Program and collaborators completed Krause, Douglas douglas.krause@noaa.gov pointOfContact Woodman, Sam 858-546-7138 8901 La Jolla Shores Dr La Jolla CA 92037 USA sam.woodman@noaa.gov custodian notPlanned CONTINENT > ANTARCTICA > ANTARCTIC PENINSULA place Global Change Master Directory (GCMD) Location Keywords 20.8 Antarctic fur seal Arctocephalus gazella Top-down and bottom-up control conservation status edge population population dynamics (ecology) theme Cape Shirreff Livingston Island San Telmo Islets South Shetland Islands place DOC/NOAA/NMFS/SWFSC > Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA. U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian AMLR Predator Data project InPort otherRestrictions Cite As: Southwest Fisheries Science Center, [Date of Access]: Rapid Population Collapse of a Key Marine Predator in the Northern Antarctic Peninsula - Antarctic Fur Seal Population Dynamics [Data Date Range], https://www.fisheries.noaa.gov/inport/item/66326. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: None otherRestrictions Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the National Marine Fisheries Service, US AMLR or its partners. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 66326 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/swfsc/dmp/pdf/66326.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US oceans FAO Area 48.1, CCAMLR Area 48.1, Antarctic Peninsula, South Shetland Islands, South Orkney Islands -64 -43 -65 -58 2001 2020 false eng false Spreadsheet Table_2_The Rapid Population Collapse of a Key Marine Predator in the Northern Antarctic Peninsula Endangers Genetic Diversity and Resilience to Clima.csv 2022-01-04 publication Table_1_The Rapid Population Collapse of a Key Marine Predator in the Northern Antarctic Peninsula Endangers Genetic Diversity and Resilience to Clima.docx 2022-01-04 publication Zip Zip Southwest Fisheries Science Center (858)546-7000 8901 La Jolla Shores Dr. La Jolla CA 92037 USA https://swfsc.noaa.gov/ WWW:LINK-1.0-http--link Southwest Fisheries Science Center Website Website listed for Southwest Fisheries Science Center information 8:00-16:30 distributor https://www.frontiersin.org/articles/10.3389/fmars.2021.796488/full#supplementary-material WWW:LINK-1.0-http--link 5773724.zip download dataset Conceptual Consistency Data were collected using agreed, standard field protocols. Raw data are collected by researchers at land based stations, entered into data files, reviewed for QA/QC and later on shore-based servers. otherRestrictions otherRestrictions Access Constraints: None | Use Constraints: None