The intrapopulation structure of the northern fur seal (Callorhinus ursinus L.) on Tyuleniy Island during the post-depression years (1993–2009)

The intrapopulation structure of the northern fur seal (Callorhinus ursinus L.) on Tyuleniy... The dynamics of the intrapopulation parameters of the northern fur seal on Tyuleniy Island are considered for the period when their population was recovering after a depression. Almost all its characteristics, except for those dependent on density, showed a positive tendency. Dynamic processes in the northern fur seal populations in the post-depression years are found to be based on the demographic transformation of the community, which closely correlates with its qualitative changes, predetermined by the dynamics of its age structure. The process of complete reversal in the state of the fur seal population, which is distinguished by peak values at the depression and in the years of prosperity, is approximately equal to the life span of one generation of these animals. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

The intrapopulation structure of the northern fur seal (Callorhinus ursinus L.) on Tyuleniy Island during the post-depression years (1993–2009)

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Publisher
Springer Journals
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1134/S1063074010070047
Publisher site
See Article on Publisher Site

Abstract

The dynamics of the intrapopulation parameters of the northern fur seal on Tyuleniy Island are considered for the period when their population was recovering after a depression. Almost all its characteristics, except for those dependent on density, showed a positive tendency. Dynamic processes in the northern fur seal populations in the post-depression years are found to be based on the demographic transformation of the community, which closely correlates with its qualitative changes, predetermined by the dynamics of its age structure. The process of complete reversal in the state of the fur seal population, which is distinguished by peak values at the depression and in the years of prosperity, is approximately equal to the life span of one generation of these animals.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Jan 18, 2011

References

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