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Original Article

Can Roads Be Used as Transects for Primate Population Surveys?

Hilário R.R.a · Rodrigues F.H.G.a · Chiarello A.G.c · Mourthé Í.b

Author affiliations

Departments of aGeneral Biology and bZoology, Universidade Federal de Minas Gerais, Belo Horizonte, and cDepartment of Biology, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil

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Folia Primatol 2012;83:47–55

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Article / Publication Details

First-Page Preview
Abstract of Original Article

Received: April 28, 2011
Accepted: May 30, 2012
Published online: August 01, 2012
Issue release date: August 2012

Number of Print Pages: 9
Number of Figures: 0
Number of Tables: 2

ISSN: 0015-5713 (Print)
eISSN: 1421-9980 (Online)

For additional information: http://www.karger.com/FPR

Abstract

Line transect distance sampling (LTDS) can be applied to either trails or roads. However, it is likely that sampling along roads might result in biased density estimates. In this paper, we compared the results obtained with LTDS applied on trails and roads for two primate species (Callithrix penicillata and Callicebus nigrifrons) to clarify whether roads are appropriate transects to estimate densities. We performed standard LTDS surveys in two nature reserves in south-eastern Brazil. Effective strip width and population density were different between trails and roads for C. penicillata, but not for C. nigrifrons. The results suggest that roads are not appropriate for use as transects in primate surveys, at least for some species. Further work is required to fully understand this issue, but in the meantime we recommend that researchers avoid using roads as transects or treat roads and trails as covariates when sampling on roads is unavoidable.

© 2012 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Article

Received: April 28, 2011
Accepted: May 30, 2012
Published online: August 01, 2012
Issue release date: August 2012

Number of Print Pages: 9
Number of Figures: 0
Number of Tables: 2

ISSN: 0015-5713 (Print)
eISSN: 1421-9980 (Online)

For additional information: http://www.karger.com/FPR


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