Given that small populations are susceptible to extinction and inbreeding, a primary goal of reintroductions should be to maximize the initial rate of increase. We investigated how the rate of increase of newly reintroduced populations of artiodactyl species was affected by population characteristics, such as size, sex, and age structure. All populations >20 grew positively at a median r = 0.17, while several smaller populations declined. Small populations grew faster if they contained more mature individuals. Small, heavily female-biased populations were more variable in r than those of a more equal sex ratio. These female-biased populations also grew on average less well. In sum, populations of <20 were more variable in r than larger ones and both age and sex structure explained a significant portion of this variation. In the experimental part of the study we used fallow deer (Dama dama) as a model species. We observed 2 experimental groups...
Komers, Petr E., Curman, G. Peder; Birgersson, Björn; Ekvall, Kenneth. 1999. The Success of Ungulate Reintroductions: Effects of Age and Sex Structure (in Proc. Conference Biology & Management of Species and Habitats at Risk). Ministry of Environment, Lands and Parks; University College of the Cariboo. Proceedings - Conference Biology & Management
Topic: Species and Ecosystems at Risk
Keywords: age and sex structure, conservation, Dama dama, fallow deer, population, rate of increase, reintroduction, ungulate
Scientific Name: Dama dama
English Name: Fallow Deer
Other Identifier: University College of the Cariboo
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