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<br />COLORADO RIVER RECOVERY PROGRAM <br />FY 2002 ANNUAL PROJECT REPORT <br /> <br />RECOVERY PROGRAM <br />PROJECT NUMBER: 22i <br /> <br />1. Project Title: Abundance Estimates for Colorado pikeminnow in tbe Middle Green <br />River lYampa River System <br /> <br />II. <br /> <br />Principal Investigator(s): <br />Kevin Bestgen/ John Hawkins/ Gary White <br />Department of Fishery and Wildlife <br />Colorado State University <br />Ft. Collins, CO 80523 <br />vOIce: KRB (970) 491-1848, <br />JAB (970) 491-2777 <br />fax: (970) 491-5091 <br />email: kbestgen@picea.cnr.colastate.edu, <br />jhawk@lamar.calastate.edu, <br />gwhite@cnr.colostate.edu <br /> <br />C. Kitcheyan, G. B. Haines, T. Modde <br />U. S. Fish and Wildlife Service <br />1380 S. 2350 W. <br />Vernal, Utah 84078 <br />voice: (435) 789-0354 X-12 <br />fax: (435) 789-4805 <br />email: tim_modde@fWs.gov <br />Chris _ Kitcheyan@fws.gov, <br />bruce _ haines@jWs.gov <br /> <br />III. Project Summary: <br /> <br />Kevin Christopherson <br />Utah Division of Wildlife Resources <br />152 East 100 North <br />Vernal, Utah 84078 <br />voice: (435) 781-5315 <br />fax: (435) 789-8343 <br /> <br />email: nrdwr.rbrunsan@State.ut.us <br /> <br />Thomas P. Nesler <br />Colorado Division of Wildlife <br />31 7 West Prospect <br />Fort Collins, CO 80524 <br />voice: (970) 472-4384 <br /> <br />email: tam.nesler@State.ca.us <br /> <br />Sampling conducted during this project is designed to obtain capture-recapture data needed <br />to estimate abundance of Colorado pikeminnow Ptychocheilus lucius in the mains tern Green <br />River upstream of the White River and the Yampa and White rivers. Abundance estimates of <br />endangered Colorado pikeminnow are needed to better monitor population status and provide <br />benclunarks against which progress toward recovery can be measured. Work started in the <br />spring of2000 and will conclude in 2003. The primary goal each year was to capture and mark <br />as many Colorado pikeminnow as possible during at least three different springtime sampling <br />occasions. The U.S. Fish and Wildlife sampled the White River, Utah Division of Wildlife <br />Resources sampled the Green and Duchesne rivers, and Colorado State University sampled the <br />Yampa River. Sampling occurred during spring runoff and ended before pikeminnow spawning <br />migration. Electrofishing was the primary sampling technique in 2002, but in prior years was <br />supplemented with trammel and fyke nets. In 2002, fyke nets were not used and trammel net <br />effort was minimal because oflow water conditions. In 2000, 1151 Colorado pikeminnow were <br />captured and in 2001 770 Colorado pikeminnow were captured. In 2002, 328 Colorado <br />pikeminnow were captured during all sampling efforts. <br /> <br />FY 2002 Annual Report 22i Page - I <br />