عنوان

Decline of the Steller sea lion in Alaskan waters :

(Number (ISBN

0309512530

(Number (ISBN

9780309512534

Erroneous ISBN

0309086329

Erroneous ISBN

1280209402

Erroneous ISBN

6610209405

Erroneous ISBN

9780309086325

Erroneous ISBN

9781280209406

Erroneous ISBN

9786610209408

Number

b709517

Title Proper

Decline of the Steller sea lion in Alaskan waters :

General Material Designation

[Book]

Other Title Information

untangling food webs and fishing nets /

First Statement of Responsibility

Committee on the Alaska Groundfish Fishery and Steller Sea Lions, Ocean Studies Board, Polar Research Board, Division on Earth and Life Studies, National Research Council of the National Academies.

Place of Publication, Distribution, etc.

Washington, D.C. :

Name of Publisher, Distributor, etc.

National Academies Press,

Date of Publication, Distribution, etc.

©2003.

Specific Material Designation and Extent of Item

1 online resource (xii, 204 pages) :

Other Physical Details

illustrations, maps

Text of Note

Includes bibliographical references (pages 161-178).

Text of Note

Front Matterr -- Preface -- Acknowledgments -- Contents -- Executive Summary -- 1 Introduction -- 2 The Environmental Setting -- 3 Identifying Clues and Testing Hypotheses -- 4 Review of Steller Sea Lion Biology -- 5 Fisheries -- 5 Fisheries -- 6 Steller Sea Lion Decline: Environmental Context and Compendium of Evidence -- 7 Information Needs and Recommendations -- References -- APPENDIX A Committee and Staff Biographies -- APPENDIX B Acronyms -- APPENDIX C Glossary -- APPENDIX D Early Account of Steller Sea Lions -- APPENDIX E Federal Funding Summary

Text of Note

APPENDIX F Meeting AgendasAPPENDIX G National Research Council Project Oversight Boards -- APPENDIX H Guide to the Common and Scientific Names of Marine Mammal, Fish, Invertebrate, and Bird Species

0

8

Text of Note

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.

Title

Decline of the Steller sea lion in Alaskan waters.

International Standard Book Number

0309086329

Animal populations.

Fisheries-- Alaska.

Fishing nets-- Environmental aspects-- Alaska.

Food chains (Ecology)

Sea lions-- Alaska.

Steller's sea lion-- Alaska.

Animaux-- Populations.

Chaînes alimentaires (Écologie)

Filets de pêche-- Aspect de l'environnement-- Alaska.

Lions de mer-- Alaska.

Otarie de Steller-- Alaska.

Pêches-- Alaska.

Animal populations.

Bedrohte Tiere

Fisheries.

Fishing nets-- Environmental aspects.

Food chains (Ecology)

Nahrungskette

NATURE-- Animals-- Mammals.

Netzfischerei

SCIENCE-- Life Sciences-- Zoology-- Mammals.

Sea lions.

Seelöwen

Steller's sea lion.

Alaska.

Alaska.

7

7

NAT-- 019000

RB

SCI-- 070030

Number

Edition

Class number

Book number

National Research Council (U.S.)., Committee on the Alaska Groundfish Fishery and Steller Sea Lions.

Date of Transaction

20201208002110.0

Cataloguing Rules (Descriptive Conventions))

pn

Electronic name

[Book]

Y