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Northern fur seal foraging strategies, Bogoslof and St. Paul Islands 2004-2006

Published by Alaska Fisheries Science Center | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 02, 2026 at 11:59 PM | Dataset Last Updated: April 30, 2026 at 12:00 AM
These data are part of North Pacific Research Board Project 414 and Project 514. Project 514 provided a second year of data collection to the study detailed in Banks et al. (2006; North Pacific Research Board Project 414 Final Report; https://workspace.aoos.org/published/file/48ffae91-0274-4b2b-bc84-5378554070c1/f0414_final_report.pdf?source=catalog&portalId=92), and are summarized together in Springer et al. (2008; North Pacific Research Board Project 514 Final Report; https://workspace.aoos.org/files/2580819/514_Final%20report.pdf?source=catalog&portalId=92 Adult female northern fur seals were captured with hoop nets at 2 breeding colonies (Reef and Vostochni Rookeries) on St. Paul Island, Alaska, and at the single breeding colony on Bogoslof Island, Alaska. Captures occurred during November, 2004 (St. Paul Island only); July, 2005; October-November, 2005; and July 2006. 20 seals at each island and during each capture period were weighed, measured, flipper tagged, and instrumented with satellite tags (platform transmitter terminals, or PTTs), for a total of 140 deployments. Seals were also instrumented with archival time-depth recorders (TDRs) during the July, 2005 (n = 20 TDRs at each island) and July, 2006 (n = 17 TDRs at each island) capture periods. Seals were recaptured, and the instruments recovered, at the end of the each summer. Data collection began on 11/06/2004 and ended on 10/19/2006; data represent 2 winter (fur seal migration) and 2 summer (fur seal lactation) study seasons. PTT (model: Kiwisat 101 and 202; Sirtrack Limited, Havelock North, New Zealand) transmissions were programmed to duty cycle at 4 hours on, 8 hours off during the winter study seasons and at 4 hours on, 4 hours off during the summer study seasons. TDRs (model Mk9; Wildlife Computers, Redmond, WA) sampled depth and temperature every 5 second. Data are composed of: fur seal capture and instrument deployment histories (1 spreadsheet); seal locations obtained from PTT deployments (4 spreadsheets, each containing all seal locations during a study season); TDR environmental sampling records (65 text files in 4 folders, each file representing a single TDR deployment and each folder representing the deployment island and summer study year for the included TDR files).

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  • http://projects.nprb.org/#metadata/686822bb-2330-4a51-8882-9aec5180ce77/project/files

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  • http://projects.nprb.org/#metadata/216d9052-2a25-4919-b49e-212f8dd122e6/project/files

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Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
{
  "fn": "Ream, Rolf",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:rolf.ream@noaa.gov"
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describedByType application/octet-steam
description These data are part of North Pacific Research Board Project 414 and Project 514. Project 514 provided a second year of data collection to the study detailed in Banks et al. (2006; North Pacific Research Board Project 414 Final Report; https://workspace.aoos.org/published/file/48ffae91-0274-4b2b-bc84-5378554070c1/f0414_final_report.pdf?source=catalog&portalId=92), and are summarized together in Springer et al. (2008; North Pacific Research Board Project 514 Final Report; https://workspace.aoos.org/files/2580819/514_Final%20report.pdf?source=catalog&portalId=92 Adult female northern fur seals were captured with hoop nets at 2 breeding colonies (Reef and Vostochni Rookeries) on St. Paul Island, Alaska, and at the single breeding colony on Bogoslof Island, Alaska. Captures occurred during November, 2004 (St. Paul Island only); July, 2005; October-November, 2005; and July 2006. 20 seals at each island and during each capture period were weighed, measured, flipper tagged, and instrumented with satellite tags (platform transmitter terminals, or PTTs), for a total of 140 deployments. Seals were also instrumented with archival time-depth recorders (TDRs) during the July, 2005 (n = 20 TDRs at each island) and July, 2006 (n = 17 TDRs at each island) capture periods. Seals were recaptured, and the instruments recovered, at the end of the each summer. Data collection began on 11/06/2004 and ended on 10/19/2006; data represent 2 winter (fur seal migration) and 2 summer (fur seal lactation) study seasons. PTT (model: Kiwisat 101 and 202; Sirtrack Limited, Havelock North, New Zealand) transmissions were programmed to duty cycle at 4 hours on, 8 hours off during the winter study seasons and at 4 hours on, 4 hours off during the summer study seasons. TDRs (model Mk9; Wildlife Computers, Redmond, WA) sampled depth and temperature every 5 second. Data are composed of: fur seal capture and instrument deployment histories (1 spreadsheet); seal locations obtained from PTT deployments (4 spreadsheets, each containing all seal locations during a study season); TDR environmental sampling records (65 text files in 4 folders, each file representing a single TDR deployment and each folder representing the deployment island and summer study year for the included TDR files).
distribution 
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    "description": "Data files for NPRB Project 0414 Seasonal foraging strategies and consequences for Northern Fur Seals at Colonies with opposite population trends",
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identifier https://data.noaa.gov/waf/NOAA/nmfs/afsc/iso/xml/28662.xml
keyword 
[
  "marine mammals",
  "northern fur seal",
  "seals",
  "PTT",
  "TDR",
  "attendance",
  "behavior",
  "ecology",
  "foraging ecology",
  "foraging strategy",
  "habitat use",
  "lactation",
  "migration",
  "satellite tag",
  "time depth recorder",
  "Alaska",
  "Aleutian Islands",
  "Bering Sea",
  "Bogoslof Island",
  "North Pacific Ocean",
  "Pribilof Islands",
  "St. Paul Island",
  "DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
  "Alaska Ecosystems Program"
]
landingPage https://www.fisheries.noaa.gov/inport/item/28662
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2026-04-30T00:00:00.000+00:00
publisher 
{
  "name": "Alaska Fisheries Science Center",
  "@type": "org:Organization"
}
rights otherRestrictions, unclassified
spatial -175.0,34.0,150.0,62.0
temporal 2004-11-06T00:00:00+00:00/2006-10-19T00:00:00+00:00
theme 
[
  "geospatial"
]
title Northern fur seal foraging strategies, Bogoslof and St. Paul Islands 2004-2006

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