Exploring ecological changes in Cook Inlet beluga whale habitat though traditional and local ecological knowledge of contributing factors for population decline

Brian T G Carter, Erik Nielsen

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The Cook Inlet beluga whale, one of five Alaskan stocks, is genetically distinct and geographically isolated from other populations. Historically, Cook Inlet whales were hunted commercially, for sport, and for subsistence uses. The Marine Mammal Protection Act (MMPA) of 1972 ended commercial and sport hunting; in 1999, subsistence hunting voluntarily ended. In 2008, Cook Inlet beluga whales were listed as endangered under the Endangered Species Act after annual aerial surveys indicated the population was not recovering as expected. A combination of natural and anthropogenic factors may be affecting this population's recovery. This study documented traditional and local ecological knowledge of Alaska Native subsistence hunters and fishers and commercial fishers through participatory research to explore ecological changes in Cook Inlet over time and to identify potential factors impacting this beluga whale population. Study results identified potential environmental and climate change factors including prey competition, health of beluga and their prey, and the presence of killer whales, the majority of which may indicate an ecosystem regime shift in the Cook Inlet region. Human-related factors included fisheries management and related prey reduction, water contamination, and anthropogenic-related noise. These results corroborate identified threats to beluga whales and also identify potential new areas of scientific investigation and management. As such this study demonstrates the value of incorporating traditional and local ecological knowledge into ongoing science and management.

Original languageEnglish (US)
Pages (from-to)299-308
Number of pages10
JournalMarine Policy
Volume35
Issue number3
DOIs
StatePublished - May 2011

Fingerprint

Delphinapterus leucas
population decrease
population decline
whale
habitat
habitats
subsistence
Sports
Alaska Natives
sport hunting
act
management
sport
Orcinus orca
hunting
marine mammals
water pollution
sports
whales
fisheries management

Keywords

  • Beluga whale
  • Endangered species
  • LEK
  • TEK

ASJC Scopus subject areas

  • Aquatic Science
  • Economics and Econometrics
  • Environmental Science(all)
  • Law
  • Management, Monitoring, Policy and Law

Cite this

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