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- Len Thomas, Stephen T Buckland, Eric A Rexstad, Jeff L Laake, Samantha Strindberg, Sharon L Hedley +3 others
- 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)

- Stephen T Buckland, Andrew J Plumptre, Len Thomas, Eric A Rexstad, S T Buckland, bullet L Thomas +2 others
- 2009

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)

- Stephen T Buckland, Andrew J Plumptre, Len Thomas, Eric A Rexstad, S T Buckland, bullet L Thomas +2 others
- 2009

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)

- Abby N Powell, Research, Laura Phillips, Eric A Rexstad, Associate, Eric J Taylor
- 2005

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