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The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.

Large scale wildlife monitoring studies: statistical methods for design and analysis

Pollock, Kenneth H., Nichols, James D., Simons, Theodore R., Farnsworth, George L., Bailey, Larissa L., Sauer, John R.·2002·Environmetrics

Abstract

Techniques for estimation of absolute abundance of wildlife populations have received a lot of attention in recent years. The statistical research has been focused on intensive small‐scale studies. Recently, however, wildlife biologists have desired to study populations of animals at very large scales for monitoring purposes. Population indices are widely used in these extensive monitoring programs because they are inexpensive compared to estimates of absolute abundance. A crucial underlying assumption is that the population index (C) is directly proportional to the population density (D). The proportionality constant, β, is simply the probability of ‘detection’ for animals in the survey. As spatial and temporal comparisons of indices are crucial, it is necessary to also assume that the probability of detection is constant over space and time. Biologists intuitively recognize this when they design rigid protocols for the studies where the indices are collected. Unfortunately, however, in many field studies the assumption is clearly invalid. We believe that the estimation of detection probability should be built into the monitoring design through a double sampling approach. A large sample of points provides an abundance index, and a smaller sub‐sample of the same points is used to estimate detection probability. There is an important need for statistical research on the design and analysis of these complex studies. Some basic concepts based on actual avian, amphibian, and fish monitoring studies are presented in this article. Copyright © 2002 John Wiley & Sons, Ltd.

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Metadata

Authors
Pollock, K. H., Nichols, J. D., Simons, T. R., Farnsworth, G. L., Bailey, L. L., & Sauer, J. R.
Venue
Environmetrics
Publisher
Wiley
Published
2002-02-27
Volume
13
Issue
2
Pages
105-119
ISSN
  • 1099-095X (ISSN-L)
  • 1180-4009
OpenAlex
W1982512880
Cited by
684
References
33
FWCI
15.84
Type
journal article
Language
en
Open access
closed

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