Scientists Report Drop in California Sea Otters
Submitted on Jul 15, 2009 (Original item from May 2009)
Wildlife and Exotics | Preservation or Restoration | Wildlife
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Short Description:
For the second year in a row, the 2009 census by the U.S. Geological Survey shows that the California sea otter populations have declined. The most recent population estimates show a marked improvement from the 1911 estimate, when international law first put an end to hunting for otters, however the latest figure is 3.8% below the 2008 population estimate.
Abstract:
According to the 2009 census, 2,654 otters live along the California Central Coast, which represents a 3.8% decline from the previous year's estimate. Researchers believe this decline is due to increased disease and immunity problems traced to ocean pollutants like DDT, a lack of food, and changes in their environment.
California sea otter populations declined in the late 1990s as well, for unknown reasons. This census was conducted in May 2009 and covered 375 miles of California coastline. The animals were found primarily along the Monterey Bay and Big Sur.
Spot Check Number:
1106
Sponsor:
United States Geological Survey
Animal Type:
Marine Animals
Record Type:
News Article
Research Method:
Unknown or Not Applicable
Geographic Region:
United States Regional
Number of Participants:
2,654
Population Descriptors:
California otters
Year Conducted:
May 2009
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