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SWFSC Marine Mammal Abundance Data for Input into LMRIS
Final technical rept. 1 Sep 2000-31 Dec 2001
SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA
Pagination or Media Count:
We estimated meso-scale density and abundance of cetaceans in the eastern Pacific Ocean during the summer and fall seasons. The study area encompasses over 25 million sq km, ranging from the tip of the Olympic Peninsula to the north, the coast of Peru to the south, and the Hawaiian archipelago to the west. Cetacean sighting data were obtained from nine research vessel surveys conducted between 1986 and 1996. We used line-transect methods to analyze the data, relying on published estimates of the line-transect parameters f0 and g0. When data were adequate, we stratified geographically by 5-degree squares of latitude and longitude. Our results illustrate clear patterns in cetacean distribution and abundance that differed for virtually every species.
APPROVED FOR PUBLIC RELEASE