CPUE as an index of relative abundance for nearshore reef fishes

Last modified: 
October 3, 2018 - 9:15am
Type: Journal Article
Year of publication: 2006
Date published: 06/2006
Authors: Dana Haggarty, Jacquelynne King
Journal title: Fisheries Research
Volume: 81
Issue: 1
Pages: 89 - 93
ISSN: 01657836

Using density measurements derived by SCUBA diving, we have verified that research angling catch per unit of effort (CPUE) is a useful measurement of the relative abundance of nearshore reef species when the appropriate habitat is targeted. We found a strictly proportional relationship between lingcod and copper rockfish CPUE and density using a ranged major axis regression. This relationship did not hold for quillback rockfish since this study did not target their preferred depth range; nor for kelp greenling. Researchers must be aware of such limitations when using CPUE as a measure of relative abundance.

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