Distribution, abundance and behavior of endangered whales in the Alaskan Chukchi and Western Beaufort Seas, 1991: With a review 1982-91. Final report, September-November 1991

Technical Report · Tue Sep 01 04:00:00 EDT 1992

OSTI ID:6827538

Moore, S E; Clarke, J T

The report summarizes the 1991 investigations of the distribution, abundance, migration timing and route, behavior, and habitat relationships of endangered whales in the Alaskan Chukchi and western Beaufort seas (hereafter, study area); 1991 was the third year of a three year (1989-91) study. Data were collected during transect and search surveys flown in a specially modified Grumman Goose (model G21G) aircraft over the study area from 20 September through 7 November. The Bering Sea stock of bowhead whales (Balaena mysticetus) was the principal species studied. Gray whales (Eschrichtius robustus) were also studied, with incidental sightings of all other marine mammals routinely recorded. Data collected during the 1991 study were subsequently integrated with the results of surveys conducted from 1982-1990. In 1991, there were 27 sightings of 32 bowhead whales and 20 sightings of 26 gray whales in the study area from 20 September through October.

• Research Organization: Science Applications International Corp., San Diego, CA (United States). Maritime Services Div.
• OSTI ID: 6827538
• Report Number(s): PB-93-135895/XAB; CNN: DI-14-35-0001-30468
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540310* -- Environment
Aquatic-- Basic Studies-- (1990-)
ABSTRACTS
ABUNDANCE
ADMINISTRATIVE PROCEDURES
AIRCRAFT
ALASKA
ANIMALS
AQUATIC ECOSYSTEMS
ARCTIC OCEAN
BEAUFORT SEA
BERING SEA
CHUKCHI SEA
COMPILED DATA
DATA
DEVELOPED COUNTRIES
DISTRIBUTION
DOCUMENT TYPES
ECOSYSTEMS
ENDANGERED SPECIES
HABITAT
INFORMATION
INVESTIGATIONS
LEADING ABSTRACT
MAMMALS
MAPS
MIGRATION
NORTH AMERICA
NUMERICAL DATA
PACIFIC OCEAN
SEAS
SURFACE WATERS
SURVEYS
USA
VERTEBRATES