Journal
of
Agricultural,
Biological, and
Environmental
Statistics
A journal of applied statistics.
Published by the American Statistical Association and the International
Biometric Society.
|
Combining Line Transect and Double Count Sampling Techniques for
Aerial Surveys
Pham X. Quang and Earl F. Becker
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).
Key Words
Aerial survey; Double count; Line transect; Weibull detection
functions.
Pham X. Quang is Professor of Statistics, Department of
Mathematical Sciences, University of Alaska, Fairbanks, AK 99775.
Earl F. Becker is Biometrician, Alaska Department of Fish and Game,
Division of Wildlife Conservation, 333 Raspberry Road, Anchorage, AK
99518.
Copyright © 2007 American Statistical Association and the International Biometric
Society.
All rights reserved.
Copyright © 1997 American Statistical Association and International Biometric Society. All rights reserved.
