Decline of the Steller Sea Lion in Alaskan Waters

Decline of the Steller Sea Lion in Alaskan Waters

Untangling Food Webs and Fishing Nets

Book - 2003
Rate this:

For an unknown reason, the Steller sea lion population in Alaska has declined by 80% over the past three decades. In 2001, the National Research Council began a study to assess the many hypotheses proposed to explain the sea lion decline including insufficient food due to fishing or the late 1970s climate/regime shift, a disease epidemic, pollution, illegal shooting, subsistence harvest, and predation by killer whales or sharks. The report's analysis indicates that the population decline cannot be explained only by a decreased availability of food; hence other factors, such as predation and illegal shooting, deserve further study. The report recommends a management strategy that could help determine the impact of fisheries on sea lion survival -- establishing open and closed fishing areas around sea lion rookeries. This strategy would allow researchers to study sea lions in relatively controlled, contrasting environments. Experimental area closures will help fill some short-term data gaps, but long-term monitoring will be required to understand why sea lions are at a fraction of their former abundance.

Publisher: Washington, D.C. : National Academies Press, ©2003
ISBN: 9780309086325
0309086329
Branch Call Number: 333.9597 D295 2003
Characteristics: xii, 204 pages : illustrations (some color), maps (some color) ; 23 cm
Additional Contributors: National Research Council (U.S.)

Opinion

From the critics


Community Activity

Comment

Add a Comment

There are no comments for this title yet.

Age

Add Age Suitability

There are no ages for this title yet.

Summary

Add a Summary

There are no summaries for this title yet.

Notices

Add Notices

There are no notices for this title yet.

Quotes

Add a Quote

There are no quotes for this title yet.

Explore Further

Browse by Call Number

Recommendations

Subject Headings

  Loading...

Find it at MCL

  Loading...
[]
[]
To Top