Publication Type: | Journal Article |
Year of Publication: | 1985 |
Authors: | Eberhardt, LL |
Journal: | The Journal of Wildlife Management |
Volume: | 49 |
Date Published: | 1985 |
ISBN Number: | 0022541X |
Keywords: | Balaenoptera physalus, Ursus arctos |
Abstract: | Lotka's equations summarizing population dynamics can be approximated by functional models of the survivorship and reproductive curves, incorporating three stages of survival and reproduction, respectively. An abbreviated form uses a single reproductive parameter and two survival values. Surviorship and reproductive curves were fitted to data on northern fur seals (Callorhinus ursinus), domestic and feral sheep, white-tailed deer (Odocoileus virginianus), grizzly bears (Ursus arctos), African buffalo (Syncerus caffer), free-ranging horses, and fin whales (Balaenoptera physalus). Data for 10 species suggest a useful relationship between senescence parameters. A bias due to senescence may lead to serious underestimation of survival rates. Observed annual rates of increase of 18-20% for feral horses, 16% for southern fur seals (Arctocephalus gazella), and 60% for white-tailed deer are compatible with observed population parameters. |
URL: | http://www.jstor.org/stable/3801386 |
Assessing the Dynamics of Wild Populations
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