Skip to main content


eCommons@Cornell

eCommons@Cornell >
Cornell University Graduate School >
Theses and Dissertations (OPEN) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1813/3230
Title: Spatial distributions of Lake Erie walleye
Authors: Murphy, James
Keywords: Lake Erie
walleye
movement
tagging
Issue Date: 26-Jun-2006
Abstract: The 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 walleye
URI: http://hdl.handle.net/1813/3230
Appears in Collections:Theses and Dissertations (OPEN)

Files in This Item:

File Description SizeFormat
Murphy_James_MS_Thesis_DNR_6_19_06.pdf576.53 kBAdobe PDFView/Open

Refworks Export

Items in eCommons are protected by copyright, with all rights reserved, unless otherwise indicated.

 

© 2014 Cornell University Library Contact Us