Movements and area use of belugas, Delphinapterus leucas, in a subarctic Alaskan estuary

  • Hobbs R
  • Laidre K
  • Vos D
 et al. 
  • 97

    Readers

    Mendeley users who have this article in their library.
  • 41

    Citations

    Citations of this article.

Abstract

Seasonal movements of 14 belugas in Cook Inlet, Alaska, were monitored by satellite telemetry between July and March in 2000-03. Whales used waters in the upper Cook Inlet intensively between summer and late autumn and dispersed to mid-inlet offshore waters during winter months. All whales remained in Cook Inlet the entire time they were tracked, and several whales were tracked through March. During summer and early fall, movements were clearly concentrated in specific areas, generally river mouths or bays, where whales were likely feeding on fish runs. Average daily travel distances ranged from 11 to 30 km per day. Monthly home ranges, estimated using the 95% kernel probability distribution of average daily positions, were smallest in August (982 km(2)), increased throughout autumn, and peaked in winter (reaching approximately 5000 km(2)). The seasonal variation in distribution and movement patterns displayed by belugas in Cook Inlet affect the sighting rates and seasonal abundance estimates obtained for this depleted population.

Author-supplied keywords

  • Alaska
  • Beluga
  • Cook Inlet
  • Delphinapterus leucas
  • Estuary
  • Satellite tag
  • White whale

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • R. C. Hobbs

  • K. L. Laidre

  • D. J. Vos

  • B. A. Mahoney

  • M. Eagleton

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free