Research & Monitoring Technical Reports

Bestgen, K.R., R.C. Schelly, R.R. Staffeldt, M.J. Breen, D.E. Snyder & M.T. Jones. 2017. First Reproduction by Stocked Bonytail in the Upper Colorado River Basin, North American Journal of Fisheries Management, 37:2, 445-455, DOI: 10.1080/02755947.2017.1280571.

Francis, T.A. and K.R. Bestgen. 2016. Population Status of Humpback Chub, Gila cypha, and Catch Indices and Population Structure of Sympatric Roundtail Chub, Gila Robusta, in Black Rocks, Colorado River, Colorado, 1998-2012. Larval Fish Laboratory Contribution 199. Final Report to the Upper Colorado River Endangered Fish Recovery Program Project Number 131. Grand Junction, Colorado.

Snyder, D.E., S.C. Seal, J.A. Charles, and C.L. Bjork. 2016. Guide to Cyprinid Fish Larvae and Early Juveniles of the Upper Colorado River Basin with Computer-Interactive Key. Final Report of the Larval Fish Laboratory, Colorado State University to the Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Bestgen, K.R., K.A. Zelasko, and G.C. White. Monitoring Reproduction, Recruitment, and population status of razorback suckers in the Upper Colorado River Basin. Final Report of Larval Fish Laboratory, Colorado State University to Upper Colorado Endangered Fish Recovery Program, Denver, Colorado.

Elverud, D. 2012. Population Estimates for Humpback Chub (Gila cypha) and Roundtail Chub (Gila robusta) in Westwater Canyon, Colorado River, Utah 2007–2008. Final Report of Utah Division of Wildlife Resources to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Hawkins, J. 2008. Fish handling guidance for the Upper Colorado Endangered Fish Recovery Program. Draft Report of Larval Fish Laboratory, Colorado State University to Upper Colorado Endangered Fish Recovery Program, Denver, Colorado.

Badame, P. 2012. Population estimates for humpback chub (Gila cypha) in Desolation and Gray Canyons, Green River, Utah 2006-2007. Final Report of Utah Division of Wildlife Resources to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Francis, T.A., and C.W. McAda. 2011. Population size and structure of humpback chub, Gila cypha and roundtail chub, G. robusta, in Black Rocks, Colorado River, Colorado, 2007–2008. Final Report of U.S. Fish and Wildlife Service to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Valdez, R.A., A. Widmer, K. Bestgen. 2011. Research Framework for the Upper Colorado River Basin. Final Report of SWCA Environmental Consultants and Larval Fish Laboratory, Colorado State Uiversity Resources to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Breen, M.J., M. Swasey, P. Badame, K. Creighton. 2011. Upper Colorado River basin young-of-year Colorado pikeminnow (Ptychocheilus lucius) monitoring: Summary report 1986-2009. Final Report of Utah Division of Wildlife Resources to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Bestgen, K.R., J.A. Hawkins, G.C. White, C.D. Walford, P. Badame, and L. Monroe. 2010. Population status of Colorado pikeminnow in the Green River Basin, Utah and Colorado, 2006-2008. Final Report of the Larval Fish Laboratory, Colorado State Uiversity to the Upper Colorado River Endnagered Fish Recovery Program, Denver, Colorado.

Jackson, J. A. 2010. Population Estimate for Humpback Chub (Gila cypha) and Roundtail Chub (Gila robusta) in Westwater Canyon, Colorado River, Utah 2003-2005. Final Report of Utah Division of Wildlife Resources to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Osmundson, D.B., and S.C. Seal. 2009. Successful Spawning by Stocked Razorback Sucker in the Gunnison and Colorado Rivers, as Evidenced by Larval Fish Collections, 2002-2007. Final Report of U.S. Fish and Wildlife Service to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Osmundson, D.B., and G.C. White. 2009. Population status and trends of Colorado pikeminnow of the upper Colorado River, 1991-2005. Final Report of U.S. Fish and Wildlife Service to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Badame, P.V. 2008. Population Estimates for Humpback Chub (Gila cypha) In Cataract Canyon, Colorado River, Utah, 2003-2005. Final Report of Utah Division of Wildlife Resources to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

McAda, C.W. 2007. Population Size and Structure of Humpback Chub, Gila cypha, in Black Rocks, Colorado River, Colorado, 2003–2004. Final Report of U.S. Fish and Wildlife Service to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Finney. S. 2006. Adult and Juvenile Humpback Chub Monitoring for the Yampa River Population, 2003-2004. Final Report of U.S. Fish and Wildlife Service to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Upper Colorado River Endangered Fish Recovery Program. 2006. Evaluation of Population Estimates for Colorado Pikeminnow and Humpback Chub in the Upper Colorado River Basin. Final Report of Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Bestgen, K.R., J. A. Hawkins, G. C. White, K. Chrisopherson, M. Hudson, M. H. Fuller, D. C. Kitcheyan, R. Brunson, P. Badame, G. B. Haines, J. Jackson, C. D. Walford, T. A. Sorensen, and T. B. Williams. 2005. Population Status of Colorado Pikeminnow in the Green River Basin, Utah and Colorado. Final Report of Colorado State University Larval Fish Laboratory to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Jackson, J.A., and J.M. Hudson. 2005. Population Estimate for Humpback Chub (Gila cypha) in Desolation and Gray Canyons, Green River, Utah 2001-2003. Final Report of Utah Division of Wildlife Resources to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Kitcheyan, D.C., and M. Montagne. 2005. Movement, Migration, and Habitat Use by Colorado Pikeminnow, (Ptychocheilus Lucius) in a Regulated River Below Flaming Gorge Dam, Utah. Final Report of U.S. Fish and Wildlife Service to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Hudson, J.M., and J.A. Jackson. 2003. Population Estimates for Humpback Chub (Gila cypha) and Roundtail Chub (Gila robusta) in Westwater Canyon, Colorado River, Utah, 1998-2000. Final Report of Utah Division of Wildlife Resources to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Bestgen, K. R., G. B. Haines, R. Brunson, T. Chart, M. Trammell, R. T. Muth, G. Birchell, K. Christopherson, and J. M. Bundy. 2002. Status of wild razorback sucker in the Green River Basin, Utah and Colorado, determined from basinwide monitoring and other sampling programs. Final Report, Colorado River Recovery Implementation Program Project Number 22D, Denver, Colorado.

Osmundson, D.B. 2002. Population dynamics of Colorado pikeminnow in the upper Colorado River. Final Report of U.S. Fish and Wildlife Service to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.

Tyus, H.M., and J.F. Saunders, III. 2001. An Evaluation of the Role of Tributary Streams for Recovery of Endangered Fishes in the Upper Colorado River Basin, with Recommendations for Future Recovery Actions. Final Report of University of Colorado at Boulder Center for Limnology to Upper Colorado River Endangered Fish Recovery Program, Denver, Colorado.