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RECOMMENDATIONS <br />Evaluate the relationship between CPE developed using shoreline electrofishing and <br />specific population estimates of Colorado pikeminnow in the four rivers of the upper <br />basin. <br />• Evaluate the variability and biases associated with electrofishing in large rivers with <br />environmental conditions that vary among years and locations. <br />• Expand analysis of ISMP data to develop size-dependent patterns of survival and <br />population rates of change (lambda) to complement CPE data and basin-wide estimates of <br />population size for Colorado pikeminnow. <br />LITERATURE CITED <br />Archer, D. L., L. R. Kaeding, B. D. Burdick, and C. W. McAda. 1985. A study of the <br />endangered fishes of the upper Colorado River. Final Report. U.S. Fish and Wildlife <br />Service, Colorado River Fishery Project. Grand Junction, Colorado. <br />Bayley, P. B., and D. J. Austen. 2002. Capture efficiency of a boat electrofisher. <br />Transactions of the American Fisheries Society 131:435--~51. <br />Biological Subcommittee. 1984. Rare and endangered Colorado River fishes sensitive areas. <br />Report to the Upper Colorado River Basin Coordinating Committee. <br />Burdick, B. D., and L. R. Kaeding. 1990. Biological merits of fish passage as part of <br />recovery of Colorado squawfish in the upper Colorado River basin. Final Report to the <br />Recovery Program for the Endangered Fishes of the Upper Colorado River. U. S. Fish <br />and Wildlife Service, Grand Junction, Colorado. <br />Hall, T. J. 1986. Electrofishing catch per hour as an indicator of largemouth bass density in <br />Ohio impoundment. North American Journal of Fisheries Management 6:397-400. <br />Hawkins, J. A., and T. P. Nesler. 1991. Nonnative fishes of the upper Colorado River basin: <br />an issue paper. Final report to the Upper Colorado River Fish Recovery Program. Larval <br />Fish Laboratory, Colorado State University and Colorado Division of Wildlife, Fort <br />Collins, CO. <br />Herbert, L. R., J. R. Tibbetts, D. W. Wilberg, and D. V. Allen. 1999. Water Resources Data, <br />Utah, Water Year 1998. U. S. Geological Survey, Water-Data Report UT-98-1, Salt Lake <br />City, Utah. <br />22 <br />