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The interactive effects of climate, social structure, and life history on the population dynamics of hoary marmots (Marmota caligata) Open Access


Other title
social structure
population modelling
climate change
Type of item
Degree grantor
University of Alberta
Author or creator
Patil, Vijay
Supervisor and department
Hik, David (Biological Sciences
Examining committee member and department
Derocher, Andrew (Biological Sciences)
Nielsen, Scott (Renewable Resources)
Lewis, Mark (Mathematics and Biological Sciences)
Department of Biological Sciences

Date accepted
Graduation date
Master of Science
Degree level
I used 8 years of mark-recapture data to test alternative hypotheses about the relative influence of winter climate, social structure, and life history on survival, reproduction, and population dynamics of hoary marmots (Marmota caligata) in the southwest Yukon. Climate, characterized by the mean winter Pacific Decadal Oscillation index (PDO), was strongly related to juvenile survival, more weakly linked with adult survival and fecundity, and did not appear to influence breeding probability. Group social structure had little influence on population dynamics. Variation in adult and juvenile survival affected the population growth rate more strongly than fecundity or breeding probability, but the relative influence of life history parameters changed from year to year. Comparisons between hoary marmots and other alpine mammals indicated that the average environment to which an animal is adapted, the strategies employed to survive winter, and life history constraints may all affect demographic sensitivity to winter climate.
License granted by Vijay Patil ( on 2010-07-03T15:49:38Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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