gov.noaa.nmfs.inport:24457 eng UTF8 dataset CSV Files 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) A Dataset of Aerial Survey Counts of Harbor Seals in Iliamna Lake, Alaska: 1984-2013 A Dataset of Aerial Survey Counts of Harbor Seals in Iliamna Lake, Alaska: 1984-2013 2015-02-03 publication NOAA/NMFS/EDM 24457 https://doi.org/10.7289/v5h41pcq https://www.fisheries.noaa.gov/inport/item/24457 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 http://dx.doi.org/10.7289/V5H41PCQ WWW:LINK-1.0-http--link Citation URL Digital Object Identifier download https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0123188 WWW:LINK-1.0-http--link Citation URL NCEI Landing Page download tableDigital Withrow, David E., J.M. London, K.M. Yano, P.L. Boveng 2014. A Dataset of Aerial Survey Counts of Harbor Seals in Iliamna Lake, Alaska: 1984-2013 doi:10.7289/V5H41PCQ This dataset provides counts of harbor seals from aerial surveys over Iliamna Lake, Alaska, USA. The data have been collated from three previously published sources (Mathisen and Kline 1992; Small 2001; ABR Inc. Environmental Research and Services 2011) and newly available data from the NOAA Alaska Fisheries Science Center and the Newhalen Tribal Council. The survey years range between 1984 and 2013. Counts are reported as summed totals across all identified waypoints in the lake for each survey date. The NOAA National Marine Mammal Laboratory (NMML) (Alaska Fisheries Science Center, Seattle, Washington, USA) conducted aerial surveys of Iliamna Lake between 2008 and 2013. Surveys were conducted as part of annual harbor seal survey effort and in collaboration with local community participants and researchers at the University of Alaska. Surveys were flown using high wing, twin engine aircraft (Aero Commander 680, 690 or a de Havilland Twin Otter). Survey altitude was generally 330 m and at an aircraft speed of 120 kts. Surveys were performed seasonally for most years between 2008 and 2013. Surveys were timed so that one survey was conducted while the lake was mostly frozen (Late March/early April), one during pupping (mid July), and often several during the August molt, when the greatest number of seals typically haul out on shore. Surveys were flown, weather allowing, in the mid- to late-afternoon, when the number of seals hauled out was expected to be highest. Aircraft flight track was recorded by GPS and all seals sighted were digitally photographed using a high resolution digital SLR camera with a telephoto zoom lens (up to 400mm). Time, date, latitude, longitude, and altitude were automatically saved into the image metadata or georeferenced post survey using the GPS track and software. The total number of seals hauled out were counted from the digital photographs and recorded for each identified site. Pups were determined by their smaller size, and close proximity (less than 1 body length; either nursing or laying right next) to a larger seal. Pups were no longer recorded beyond about mid-August when many have been weaned and cannot reliably be distinguished from other non-adult seals. In 2009, a collaborative effort between NMML and researchers from the Newhalen Tribal Council (Newhalen Tribal Council 2009) provided 10 additional surveys and similar techniques were used. The raw survey count data from these surveys was provided to NMML. Aerial surveys were authorized under a Marine Mammal Protection Act General Authorization (LOC No. 14590) issued to the NMML. Between 2005 and 2007, ABR, Inc. Environmental Research and Services conducted a series of aerial surveys for harbor seals in Iliamna Lake (ABR Inc. Environmental Research and Services 2011). In addition, earlier counts from surveys conducted by ADFG (Small 2001) and a 1991 census by Mathisen and Kline (Mathisen and Kline 1992) were incorporated into the dataset to expand the historical reach. Geographic coordinates were provided (or, when not provided, determined based on descriptions or phyiscal maps) for each survey site and these sites were compared and merged with locations identified by NMML. In some cases, sites in very close geographic proximity were combined into a single site. This dataset provides counts of harbor seals from aerial survey data collected in Iliamna Lake, Alaska, USA between 1984 and 2013. Withrow, David E., J.M. London, K.M. Yano, P.L. Boveng 2014. A Dataset of Aerial Survey Counts of Harbor Seals in Iliamna Lake, Alaska: 1984-2013 doi:10.7289/V5H41PCQ 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 Harbor Seal theme Integrated Taxonomic Information systems (ITIS) Alaska Iliamna Lake place Geographic Names Information System abundance aerial survey theme 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]: A Dataset of Aerial Survey Counts of Harbor Seals in Iliamna Lake, Alaska: 1984-2013 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/24457. 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: 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 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; Cite as: Withrow, David E., J.M. London, K.M. Yano, P.L. Boveng 2014. A Dataset of Aerial Survey Counts of Harbor Seals in Iliamna Lake, Alaska: 1984-2013 doi:10.7289/V5H41PCQ; otherRestrictions Distribution Liability: 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. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 24457 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/24457.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 -154.94 -154.214 59.5281 59.7512 1984-08-06 2013-08-07 false eng false Data Table iliamna_totalcounts.csv 2024-04-03 publication CSV - Comma Separated Values (Text) 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://accession.nodc.noaa.gov/download/123188 WWW:LINK-1.0-http--link https://accession.nodc.noaa.gov/download/123188 download https://noaa-fisheries-afsc.data.socrata.com/Species/A-Dataset-of-Aerial-Survey-Counts-of-Harbor-Seals-/dfm6-zu9q WWW:LINK-1.0-http--link https://noaa-fisheries-afsc.data.socrata.com/Species/A-Dataset-of-Aerial-Survey-Counts-of-Harbor-Seals-/dfm6-zu9q download dataset Between 2005 and 2007, ABR, Inc. Environmental Research and Services conducted a series of aerial surveys for harbor seals in Iliamna Lake (ABR Inc. Environmental Research and Services 2011). In addition, earlier counts from surveys conducted by ADFG (Small 2001) and a 1991 census by Mathisen and Kline (Mathisen and Kline 1992) were incorporated into the dataset to expand the historical reach. Geographic coordinates were provided (or, when not provided, determined based on descriptions or phyiscial maps) for each survey site and these sites were compared and merged with locations identified by NMML. In some cases, sites in very close geographic proximity were combined into a single site. Aerial Surveys of Harbor Seals in Southern Bristol Bay, Alaska, 1998-1999 in Harbor Seal Investigations in Alaska, Annual Report. NOAA Grant NA87FX0300, 71–83. 2001-03-15 publication Small, Robjert J., Alaska Department of Fish and Game. 1998 1999 Chapter 16. Wildlife and Habitat, Bristol Bay Drainages in Pebble Project Environmental Baseline Document 2004 Through 2008. 2011-07-26 publication ABR Inc. Environmental Research and Services, The Pebble Partnership http://www.pebbleresearch.com/download/ WWW:LINK-1.0-http--link Source Citation URL Source Citation URL information 2004 2008 Harbor Seals in Iliamna Lake, Bristol Bay, Alaska. Report JCFOS 9204. 1992-04-17 publication Mathisen, Ole A., and Thomas C. Kline. Juneau Center for Fisheries; Ocean Sciences, University of Al 1984 1991 Iliamna Harbor Seal Survey Counts Newhalen Tribal Council. PO Box 207 Newhalen, AK. 2009 otherRestrictions otherRestrictions Access Constraints: There are no metadata access constraints | Use Constraints: There are no metadata use constraints