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Combining Line Transect and Double Count Sampling Techniques for Aerial Surveys

Pham X. Quang and Earl F. Becker
Journal of Agricultural, Biological, and Environmental Statistics
Vol. 2, No. 2 (Jun., 1997), pp. 230-242
Stable URL: http://www.jstor.org/stable/1400405
Page Count: 13
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Combining Line Transect and Double Count Sampling Techniques for Aerial Surveys
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Abstract

A procedure to estimate an animal population size using simultaneously collected line transect and double count aerial survey data is proposed. Detection functions are modeled as portions of parameterized curves belonging to the Weibull family. We do not assume that observers achieve perfect detectability at a certain distance from the transect line. The procedure is illustrated using a loon dataset that has been previously analyzed by Quang and Lanctot (1991).

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