Corti et al. 2010 - Journal of Mammalogy.pdf (305.46 kB)

Dynamics of a small population of endangered huemul deer (Hippocamelus bisulcus) in Chilean Patagonia

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posted on 18.09.2020 by P Corti, Heiko Wittmer, M Festa-Bianchet
Conservation of huemul (Hippocamelus bisulcus), an endangered South American deer, is hindered by a lack of quantitative information on its population dynamics. We conducted a 3-year study in Chilean Patagonia to assess the dynamics of huemul by monitoring known individuals. We fitted 55 deer of all sexage classes with either radiocollars, radio ear tags, or conventional ear tags, and identified 33 additional deer through natural marks. KaplanMeier estimates revealed that annual survival of adult females was high and stable (0•94 ± 0•07 SD), but survival of female fawns was low and variable (0•13 ± 0•18). Predation was the predominant cause of mortality for deer of all age classes. Fertility rates were lower (0•72 ± 0•20) than in other cervids of similar size. Simulations of the finite rate of increase (λ) suggest that the population is currently stable. Sensitivity analysis showed that any decrease in adult female survival would have drastic effects on λ. Consequently, management should maintain high adult survival and improve recruitment. Continued monitoring of individuals is required to provide baseline data for comparison with other populations and to inform recovery strategies of small and fragmented populations. © 2010 American Society of Mammalogists.

History

Preferred citation

Corti, P., Wittmer, H. & Festa-Bianchet, M. (2010). Dynamics of a small population of endangered huemul deer (Hippocamelus bisulcus) in Chilean Patagonia. Journal of Mammalogy, 91(3), 690-697. https://doi.org/10.1644/09-MAMM-A-047.1

Journal title

Journal of Mammalogy

Volume

91

Issue

3

Publication date

01/01/2010

Pagination

690-697

Publisher

Oxford University Press (OUP)

Publication status

Published

Contribution type

Article

Online publication date

16/06/2010

ISSN

0022-2372

eISSN

1545-1542

Language

en

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