Line Transect Sampling of Primates: Can Animal-to-Observer Distance Methods Work? View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2010-06

AUTHORS

Stephen T. Buckland, Andrew J. Plumptre, Len Thomas, Eric A. Rexstad

ABSTRACT

Line transect sampling is widely used for estimating abundance of primate populations. Researchers commonly use animal-to-observer distances (AODs) in analysis, in preference to perpendicular distances from the line, which is in marked contrast with standard practice for other applications of line transect sampling. We formalize the mathematical shortcomings of approaches based on AODs, and show that they are likely to give strongly biased estimates of density. We review papers that claim good performance for the method, and explore this performance through simulations. These confirm strong bias in estimates of density using AODs. We conclude that AOD methods are conceptually flawed, and that they cannot in general provide valid estimates of density. More... »

PAGES

485-499

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10764-010-9408-4

DOI

http://dx.doi.org/10.1007/s10764-010-9408-4

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1003317788


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