A combination line transect and capturerecapture sampling model for multiple observers in aerial surveys
 Russell AlpízarJara,
 Kenneth H. Pollock
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We present a robust sampling methodology to estimate population size using line transect and capturerecapture procedures for aerial surveys. Aerial surveys usually underestimate population density due to animals being missed. A combination of capturerecapture and line transect sampling methods with multiple observers allows violation of the assumption that all animals on the centreline are sighted from the air. We illustrate our method with an example of inanimate objects which shows evidence of failure of the assumption that all objects on the centreline have probability 1 of being detected. A simulation study is implemented to evaluate the performance of three variations of the LincolnPetersen estimator: the overall estimator, the stratified estimator, and the general stratified estimator based on the combined likelihood proposed in this paper. The stratified LincolnPetersen estimator based on the combined likelihood is found to be generally superior to the other estimators.
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 Title
 A combination line transect and capturerecapture sampling model for multiple observers in aerial surveys
 Journal

Environmental and Ecological Statistics
Volume 3, Issue 4 , pp 311327
 Cover Date
 19961201
 DOI
 10.1007/BF00539369
 Print ISSN
 13528505
 Online ISSN
 15733009
 Publisher
 Kluwer Academic Publishers
 Additional Links
 Topics
 Keywords

 detection function
 program DISTANCE
 program SURVIV
 visibility bias
 wildlife population density estimation
 Authors

 Russell AlpízarJara ^{(1)}
 Kenneth H. Pollock ^{(1)}
 Author Affiliations

 1. Biomathematics Graduate Program, Department of Statistics, North Carolina State University, Box 8203, 276958203, Raleigh, NC, USA