Snake abundance: the limits of occupancy-based estimates

Field studies that have focused on estimation of animal species abundances have for long been confronted by the problem of not counting an individual that was actually present in the habitat or locality. More than 30 years ago, Preston super(1) demonstrated how the detection probability of birds inc...

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Bibliographic Details
Published in:Current science (Bangalore) 2011-07, Vol.101 (2), p.137-138
Main Author: Daniels, R. J. Ranjit
Format: Article
Language:English
Subjects:
Abundance
Animals
Biology
CORRESPONDENCE
Ecological modeling
Hunting
Population estimates
Snakes
Species
Vipers
Wildlife habitats
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Summary:Field studies that have focused on estimation of animal species abundances have for long been confronted by the problem of not counting an individual that was actually present in the habitat or locality. More than 30 years ago, Preston super(1) demonstrated how the detection probability of birds increased with enhanced effort wherein a team of field biologists working simultaneously in a site might detect more birds than a solitary observer would. That the problem of estimating the proportion of elusive individuals in a local population of animals continues to haunt field biologists is evident in the series of recent publications on the subject super(2-4).
ISSN:0011-3891