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- Len Thomas, Stephen T Buckland, +6 authors Kenneth P Burnham
- 2010

1. Distance sampling is a widely used technique for estimating the size or density of biological populations. Many distance sampling designs and most analyses use the software Distance. 2. We briefly review distance sampling and its assumptions, outline the history, structure and capabilities of Distance, and provide hints on its use. 3. Good survey design… (More)

- Jeff Laake, Eric Rexstad
- 2016

For most of the examples presented in the MARK book, the construction of the design matrix (DM) using the 'graphical DM template' is relatively straightforward. Moreover, by 'forcing' you to confront the actual structure of the design matrix, the relationship between linear models, covariates, even fundamental statistical entities like 'degrees of freedom'… (More)

Line transect sampling is widely used for estimating abundance of primate populations. Animal-to-observer distances (AODs) are commonly used in analysis, in preference to perpendicular distances from the line. This is in marked contrast with standard practice for other applications of line transect sampling. We formalize the mathematical shortcomings of… (More)

Line transect surveys are widely used for estimating abundance of primate populations. The method relies on a small number of key assumptions, and if these are not met, substantial bias may occur. For a variety of reasons, primate surveys often do not follow what is generally considered to be best practice, either in survey design or in analysis. The design… (More)

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