Show simple item record

dc.contributor.authorMurphy, James
dc.identifier.otherbibid: 6475846
dc.description.abstractThe spatial distributions of Lake Erie walleye stocks are examined from tagging data from 1990-2001. Releases and recoveries from four western basin tagging sites ? Monroe, Chicken and Hen Islands, Sandusky Bay, and Sandusky River ? and from one eastern basin site, Van Buren Bay, are analyzed. Walleye tagged at the Monroe, Chicken and Hen Islands, and Van Buren Bay are considered individual stocks and walleye tagged at the Sandusky Bay and Sandusky River sites are considered one stock. Spatial distributions are quantified by construction of a spatially-explicit population model that follows groups of releases from the first May after spring tagging through October of the second year after release and estimation of model parameters in a maximum-likelihood framework. Two different estimation frameworks are implemented that handle tag-loss rates and tag-reporting rates uniquely, so the effects of these ?nuisance parameters? can be analyzed. The results confirm previous tagging studies that show movement of western basin walleyeen_US
dc.description.sponsorshipGreat Lakes Fisheries Commissionen_US
dc.format.extent590366 bytes
dc.subjectLake Erieen_US
dc.titleSpatial distributions of Lake Erie walleyeen_US
dc.typedissertation or thesisen_US

Files in this item


This item appears in the following Collection(s)

Show simple item record