Aerial surveys of endangered cetaceans and other marine mammals in the northwestern Gulf of Alaska and southeastern Bering Sea. Final report

Technical Report · Tue Sep 01 00:00:00 EDT 1987

OSTI ID:5283568

Brueggeman, J J; Green, G A; Grotefendt, R A; Chapman, D G

Aerial surveys were conducted in the Northwestern Gulf of Alaska and southeastern Bering Sea to determine the abundance, distribution, and habitat use patterns of endangered cetaceans and other marine mammals. Four species of cetaceans listed by the Federal Government as endangered were observed: gray, humpback, finback, and sperm whales. Sightings were also made to seven nonendangered species of cetaceans: minke, Cuvier's beaked, Baird's beaked, belukha, and killer whales, and Dall and harbor porpoises. Results show that the project area is an important feeding ground for relatively large numbers of humpback and finback whales and lower numbers of gray whale migration route between seasonal ranges. The project area also supports a variety of other marine mammals both seasonally and annually.

• Research Organization: Envirosphere Co., Bellevue, WA (USA)
• OSTI ID: 5283568
• Report Number(s): PB-89-234652/XAB
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
02 PETROLEUM
03 NATURAL GAS
BERING SEA
BASELINE ECOLOGY
ENDANGERED SPECIES
ENERGY SOURCE DEVELOPMENT
ENVIRONMENTAL IMPACTS
GULF OF ALASKA
MAMMALS
AERIAL SURVEYING
CETACEANS
HABITAT
MIGRATION
OFFSHORE DRILLING
POPULATIONS
PROGRESS REPORT
SEASONAL VARIATIONS
STATISTICAL DATA
ANIMALS
AQUATIC ORGANISMS
DATA
DOCUMENT TYPES
DRILLING
ECOLOGY
INFORMATION
NUMERICAL DATA
PACIFIC OCEAN
SEAS
SURFACE WATERS
VARIATIONS
VERTEBRATES
540310* - Environment
Aquatic- Basic Studies- (1990-)
020900 - Petroleum- Environmental Aspects
030800 - Natural Gas- Environmental Aspects