| A report of the Oregon, California and Washington line-transect experiment (ORCAWALE) conducted in west coast waters during summer/fall 1996 - :3703 | National Marine Fisheries Service (NMFS)
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A report of the Oregon, California and Washington line-transect experiment (ORCAWALE) conducted in west coast waters during summer/fall 1996
  • Published Date:
    1999
Filetype[PDF-4.72 MB]


Details:
  • Corporate Authors:
    Southwest Fisheries Science Center (U.S.)
  • Description:
    "This report summarizes information collected on a survey of marine mammals off the contiguous west coast of the United States aboard the National Oceanographic and Atmospheric Administration (NOAA) research ships McArthur and David Starr Jordan during three months in the summer/fall of 1996. The primary purposes of this research were to estimate the abundance of and to describe the distribution of dolphins, whales, and porpoises in the coastal waters of the eastern Pacific Ocean out to 300 nautical miles and to compare passing and closing search modes. This research was sponsored by the National Marine Fisheries Service's Southwest Fisheries Science Center (SWFSC) and Office of Protected Resources. In addition to the primary mission of determining cetacean abundances, several ancillary projects were included. Photographs were taken for the identification of individual whales and projectile biopsy samples were taken for genetic analysis of cetacean population structure. Dive interval studies were conducted on sperm whales, Baird's beaked whales, and blue whales. Oceanographic data were collected to better understand cetacean habitats and the physical environment of the study area. A seabird survey was also conducted. This report describes the experimental procedures and summarizes the cetacean observations made during this project. Separate reports will be published which will describe the oceanographic and seabird studies completed during the survey. Barlow (1 997) presents preliminary estimates of cetacean abundances from this survey."--Introduction.

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