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Estimating Population Density of Amazonian Titi Monkeys (Callicebus discolor) via Playback Point Counts

Abstract:

We describe a new method for estimating population density of vocally responsive animals, which is based on playback calls coupled with auditory point transect sampling. The method yielded, for red titi monkeys (Callicebus discolor), better estimates than traditional line transect surveys. We propose it as an effective alternative for sampling certain cryptic, but vocally responsive animal species. Abstract in Spanish is available at © 2011 The Author(s). Journal compilation © 2011 by The Association for Tropical Biology and Conservation.