gov.noaa.nmfs.inport:17349 eng UTF8 dataset GIS Alaska Fisheries Science Center 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 0700-1700 Pacific Time resourceProvider Koslovsky, Stacie 206-526-6433 7600 Sand Point Way NE Seattle WA 98115-6349 stacie.koslovsky@noaa.gov pointOfContact 2026-03-04T19:17:17 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) Alaska Harbor Seal Aerial Survey Units Alaska Harbor Seal Aerial Survey Units publication NOAA/NMFS/EDM 17349 https://www.fisheries.noaa.gov/inport/item/17349 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Alaska Fisheries Science Center (206) 526-4000 (206) 526-4004 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA afsc.webmaster@noaa.gov https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center WWW:LINK-1.0-http--link Alaska Fisheries Science Center Website AKFSC Home Page information 0700-1700 Pacific Time originator mapDigital London, J.M., K.M. Yano, E.L. Richmond, R. Montgomery, J.M. Ver Hoef, and P.L. Boveng (2015): Aerial Survey Units for Harbor Seals in Coastal Alaska. Alaska Fisheries Science Center, National Oceanic and Atmospheric Administration. --doi:TBD, contact authors for updated citation details-- Aerial surveys of coastal Alaska are the primary method for estimating abundance of harbor seals. A particular challenge associated with aerial surveys of harbor seals is maintaining consistent spatial representation of haulout locations. In some cases, seals aggregate into a single large grouping at a particular area. In other cases, seals aggregate into several smaller groups spread over a particular area. To establish geo-spatial consistency, the Alaska Fisheries Science Center developed coastal survey units (spatial polygons) throughout the distriubtion of harbor seals in Alaska. Each survey unit was designed to be approximately 10-15 kilometers in coastal length, to faciliate efficient aerial surveys, and to aggregate known harbor seal haulout locations. Each survey unit was assigned a unique alphanumeric identifier and the spatial data are provided in the geographic (epsg:4326) coordinate reference system. The survey units form the spatial foundation for estimation of harbor seal abundance and trend. This geospatial dataset describes the survey units used for coastal aerial surveys of harbor seals in Alaska London, J.M., K.M. Yano, E.L. Richmond, R. Montgomery, J.M. Ver Hoef, and P.L. Boveng (2015): Aerial Survey Units for Harbor Seals in Coastal Alaska. Alaska Fisheries Science Center, National Oceanic and Atmospheric Administration. --doi:TBD, contact authors for updated citation details-- completed Cameron, Mike michael.cameron@noaa.gov pointOfContact Koslovsky, Stacie 206-526-6433 7600 Sand Point Way NE Seattle WA 98115-6349 stacie.koslovsky@noaa.gov custodian asNeeded abundance aerial survey harbor seal theme Alaska coastal intertidal place DOC/NOAA/NMFS/AFSC > Alaska 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 Alaska Harbor Seal Surveys and Abundance project InPort otherRestrictions Cite As: Alaska Fisheries Science Center, [Date of Access]: Alaska Harbor Seal Aerial Survey Units [Data Date Range], https://www.fisheries.noaa.gov/inport/item/17349. 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: The data set is in the process of being archived with the NOAA National Centers for Environmental Information. Once the archival process is complete and verified, the data set will be publicly available. otherRestrictions Use Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Acknowledge NOAA/NMFS/AFSC or the specified citation as the source from which these data were obtained in any publications and/or other representations of these data. Communication and collaboration with dataset authors is strongly encouraged. otherRestrictions Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 17349 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/17349.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 Authoritative data are housed within a PostgreSQL/PostGIS database within AFSC and provided to the public via an ESRI ArcGIS Server at the Alaska Fisheries Science Center. 172 -130 51 61.5 | Currentness: Unknown 2015 ESRI REST Service Shapefile Alaska Fisheries Science Center (206) 526-4000 (206) 526-4004 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA afsc.webmaster@noaa.gov https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center WWW:LINK-1.0-http--link Alaska Fisheries Science Center Website AKFSC Home Page information 0700-1700 Pacific Time distributor https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/pv_cst_polys/FeatureServer WWW:LINK-1.0-http--link https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/pv_cst_polys/FeatureServer Online resource download https://noaa.hub.arcgis.com/datasets/noaa::alaska-harbor-seal-aerial-survey-units/about WWW:LINK-1.0-http--link https://noaa.hub.arcgis.com/datasets/noaa::alaska-harbor-seal-aerial-survey-units/about download dataset The aerial survey units (polygons) were derived from a multi-stage effort that combined historical knowledge of harbor seal haul-outs, typical aerial survey routes and techniques, and detailed coastline maps. Each unit was designed to be approximately 10-15 km in coastline length and 1-2 km in width. The units were designed such that an aircraft surveying obliquely would be within a unit boundary under typical survey conditions. Additionally, the survey unit boundaries were optimized to limit the number of known haul-out locations near the boundary. otherRestrictions otherRestrictions Access Constraints: no metadata access constraints | Use Constraints: Metadata are subject to revision at any time and information within the metadata record should not be cited without author consent. While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.