Statistical inference about the relative efficiency of a new survey protocol, based on paired-tow survey calibration data

Cadigan, Noel G. and Dowden, Jeff J. (2010) Statistical inference about the relative efficiency of a new survey protocol, based on paired-tow survey calibration data. Fishery Bulletin, 108(1), pp. 15-29.

[img] PDF (The document's language is English .) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (536Kb)
Official URL: http://fishbull.noaa.gov/1081/cadigan.pdf

Abstract

Paired-tow calibration studies provide information on changes in survey catchability that may occur because of some necessary change in protocols (e.g., change in vessel or vessel gear) in a fish stock survey. This information is important to ensure the continuity of annual time-series of survey indices of stock size that provide the basis for fish stock assessments. There are several statistical models used to analyze the paired-catch data from calibration studies. Our main contributions are results from simulation experiments designed to measure the accuracy of statistical inferences derived from some of these models. Our results show that a model commonly used to analyze calibration data can provide unreliable statistical results when there is between-tow spatial variation in the stock densities at each paired-tow site. However, a generalized linear mixed-effects model gave very reliable results over a wide range of spatial variations in densities and we recommend it for the analysis of paired-tow survey calibration data. This conclusion also applies if there is between-tow variation in catchability.

Item Type: Article
Title: Statistical inference about the relative efficiency of a new survey protocol, based on paired-tow survey calibration data
Personal Creator/Author:
CreatorsEmail
Cadigan, Noel G.
Dowden, Jeff J.
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 108
Number: 1
Page Range: pp. 15-29
Date: 2010
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 8763
Depositing User: Patti M. Marraro
Date Deposited: 11 Jun 2012 18:31
Last Modified: 11 Jun 2012 18:31
URI: http://aquaticcommons.org/id/eprint/8763

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...