Statistical Methods for Aerial Surveys Using the Double-Count Technique to Correct Visibility Bias

In double-count surveys two observers search the sampled area for the species of interest. The presence of the two observers permits one to calculate a survey-specific correction for visibility bias. This correction factor can be negatively biased, because animals difficult to see for one observer a...

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Veröffentlicht in:	Biometrics 1995-06, Vol.51 (2), p.461-470
Hauptverfasser:	Rivest, Louis-Paul, Potvin, Francois, Crepeau, Helene, Daigle, Gaetan
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Biometrics Estimation bias Estimation methods Estimators Population estimates Probabilities Statistical variance Unbiased estimators Wildlife population estimation
Online-Zugang:	Volltext
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