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Lead burdens and behavioral impairments of the lined shore crab Pachygrapsus crassipes

Ecotoxicology

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Abstract

Unless a correction is made, population estimates derived from a sample of belt transects will be biased if a fraction of, the individuals on the sample transects are not counted. An approach, useful for correcting this bias when sampling immotile populations using transects of a fixed width, is presented. The method assumes that a searcher's ability to find objects near the center of the transect is nearly perfect. The method utilizes a mathematical equation, estimated from the data, to represent the searcher's inability to find all objects at increasing distances from the center of the transect. An example of the analysis of data, formation of the equation, and application is presented using waterfowl nesting data collected in Colorado.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Lead burdens and behavioral impairments of the lined shore crab Pachygrapsus crassipes
Series title:
Ecotoxicology
Volume
11
Year Published:
2002
Language:
English
Contributing office(s):
Western Ecological Research Center
Description:
p. 417-421
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Ecotoxicology
First page:
417
Last page:
421