National Park Service

Marine Predators Monitoring

Parks monitored: Glacier Bay

Protocol under development - contents subject to change.

  • Program
  • Reports &
  • Original Source Data


Marine Predators

SEAN's long-term Marine Predators monitoring program is still under development. It is intended to fulfill these objectives:

  • Determine long-term trends in the numbers and spatial distribution of marine birds and mammals within GLBA proper using grid-based sampling of at-sea surveys twice a summer stratified by along-shore (shoreline) and pelagic line transects that covers approximately 10% of the marine habitat.
  • Generate population estimates for select marine seabird and mammal species or guilds from annual counts over the next 15-20 years.


AC Geiser Brinkman, Aleya, Brendan J. Moynahan, and Mark S. Lindberg. 2013. Black-legged kittiwakes in Glacier Bay National Park and Preserve: a review of existing data and recommendations for long-term population monitoring. Natural Resource Technical Report NPS/SEAN/NRTR—2013/672. National Park Service, Fort Collins, Colorado.

AC Graw Drew, Gary S., Suzann G. Speckman, John F. Piatt, Julian M. Burgos, and James L. Bodkin. 2008.Survey design considerations for monitoring marine predator populations in Glacier Bay, Alaska: results and post-hoc analyses of surveys conducted in 1999-2003. U.S. Geological Survey, Reston, VA.

No Marine Predators monitoring data are currently available.

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