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DENSITY: software for analysing capture-recapture data from passive detector arrays

Animal Biodiversity and Conservation

Proceedings of the International Conference EURING 2003, held in Radolfzell (Germany) from 6th-10th October 2003. The conference focused on the quantitative study of marked individuals in ecology, evolution and conservation biology, and there were ten sessions. Full text of the individual paper is available from the first URL. The whole journal from the second URL. 6319_Efford.pdf
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Abstract

A general computer-intensive method is described for fitting spatial detection functions to capture-recapture data from arrays of passive detectors such as live traps and mist nets. The method is used to estimate the population density of 10 species of breeding birds sampled by mist-netting in deciduous forest at Patuxent Research Refuge, Laurel, Maryland, U.S.A., from 1961 to 1972. Total density (9.9 ? 0.6 ha-1 mean ? SE) appeared to decline over time (slope -0.41 ? 0.15 ha-1y-1). The mean precision of annual estimates for all 10 species pooled was acceptable (CV(D) = 14%). Spatial analysis of closed-population capture-recapture data highlighted deficiencies in non-spatial methodologies. For example, effective trapping area cannot be assumed constant when detection probability is variable. Simulation may be used to evaluate alternative designs for mist net arrays where density estimation is a study goal.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
DENSITY: software for analysing capture-recapture data from passive detector arrays
Series title:
Animal Biodiversity and Conservation
Volume
27
Issue:
1
Year Published:
2004
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
217-228
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Animal Biodiversity and Conservation
First page:
217
Last page:
228
Number of Pages:
12