Jump to ContentJump to Main Navigation
Whales, Whaling, and Ocean Ecosystems$
Users without a subscription are not able to see the full content.

James Estes

Print publication date: 2007

Print ISBN-13: 9780520248847

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520248847.001.0001

Show Summary Details
Page of

PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2022. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use.date: 27 June 2022

Potential Influences of Whaling on the Status and Trends of Pinniped Populations

Potential Influences of Whaling on the Status and Trends of Pinniped Populations

Chapter:
(p.344) Twenty-Seven Potential Influences of Whaling on the Status and Trends of Pinniped Populations
Source:
Whales, Whaling, and Ocean Ecosystems
Author(s):

DANIEL P. COSTA

MICHAEL J. WEISE

JOHN P.Y. ARNOULD

Publisher:
University of California Press
DOI:10.1525/california/9780520248847.003.0027

This chapter reviews the current trends of pinniped populations worldwide and summarizes the known or suspected reasons for recent declines. It evaluates trends in pinniped populations attributed to natural biological processes in terms of reproductive strategies, physiological limitations, and the resultant susceptibility to disturbance in prey resources and predation brought about by these factors. Increasing populations include most of the southern hemisphere fur seals, the California sea lion, harbor seal populations off the west coast of the United States, and the northern elephant seal. Populations in decline include northern and southern sea lions, the northern fur seal, the southern elephant seal in parts of the Southern Ocean, and the harbor seal in southwest Alaska. The tropical monk seals are either stable at low levels or in decline. Population trends for polar species are poorly known, although by and large these species appear to be both abundant and fairly stable.

Keywords:   pinniped populations, reproductive strategies, prey resources, predation, California sea lion, fur seals

California Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs, and if you can't find the answer there, please contact us.