Wittmer et al. 2010 - Oryx.pdf (325.51 kB)

Learning to count: adapting population monitoring for Endangered huemul deer Hippocamelus bisulcus to meet conservation objectives

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journal contribution
posted on 18.09.2020 by Heiko Wittmer, P Corti, C Saucedo, J Galaz
Considerable efforts have been invested in recent years to improve methods for both data collection and analyses required for population monitoring. Where historical or current estimates of population size are not adjusted for detection probabilities they may be too inaccurate to provide meaningful estimates of trends and thus monitoring methods need to be adapted. Here, we use data from the Endangered huemul deer Hippocamelus bisulcus to outline a framework to develop accurate robust estimates of detection probabilities that can be incorporated into new surveys in a cost-effective way and applied to existing survey data sets. In particular, by retroactively estimating detection probabilities for surveys of huemul, we show that current survey methods for huemul are inadequate to determine population trends reliably. Based on these results we propose a new monitoring method for the huemul and discuss the importance of estimating accuracies of historical survey data to ensure that changes in the abundance of the species reflect real population trends and are not an artefact of variation over time in the accuracy of survey data. © 2010 Fauna & Flora International.

History

Preferred citation

Wittmer, H., Corti, P., Saucedo, C. & Galaz, J. (2010). Learning to count: adapting population monitoring for Endangered huemul deer Hippocamelus bisulcus to meet conservation objectives. Oryx, 44(4), 516-522. https://doi.org/10.1017/S0030605310001018

Journal title

Oryx

Volume

44

Issue

4

Publication date

01/01/2010

Pagination

516-522

Publisher

Cambridge University Press (CUP)

Publication status

Published

Contribution type

Article

Online publication date

14/10/2010

ISSN

0030-6053

eISSN

1365-3008

Language

en

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