Publications

Please see my googlescholar page for most updated list: https://scholar.google.com/citations?user=SK8vs4kAAAAJ&hl=en

Spencer, D., D. A. Haukos, C. A. Hagen, M. Daniels, and D. Goodin. Conservation Reserve Program mitigates grassland loss in the lesser prairie-chicken range of Kansas. Global Ecology and Conservation. 9: 21-38.

Coates, P., M A. Ricca, B. G. Prochazka, M. L. Brooks, E. J. Blomberg, K. E. Doherty, C. A. Hagen, and M. L. Casazza. 2016.  Wildfire, Climate, and Invasive Grass Interactions Negatively Impact an Indicator Species by Reshaping Sagebrush Ecosystems. Proceedings of the National Academy of Sciences 45: 12745–12750.

Severson, J.P., C. A. Hagen, J. D. Maestas, D. E. Naugle, J. T. Forbes, and K. P. Reese. 2016.  Conifer Encroachment Effects on Sage-Grouse Nest-Site Selection in Southeastern Oregon. Journal of Wildlife Management online early, 10.1002/jwmg.21183

Miller, R., J.D. Maestas, D. E. Naugle, G. Hall, and C.A. Hagen. Special issue: Targeted woodland removal to recover at-risk grouse and their sagebrush-steppe and prairie ecosystems Rangeland Ecology and Management online early.

Boggie, M.A., C. R. Strong, D. Lusk, S. A. Carleton, W. R. Gould, R. L. Howard, C. Nichols, M. Falkowski, and C. A. Hagen. 2016. Impacts of mesquite distribution on seasonal space use of lesser prairie-chickens. Rangeland Ecology and Management. online early.

Falkowski, M. J., et al (9 co-authors). Mapping tree canopy in support of proactive prairie grouse conservation in western North America. 2016. Rangeland Ecology and Management online early

Severson, J.P., C. A. Hagen, J. D.Maestas, D. E. Naugle, J. T. Forbes, and K. P. Reese. 2016. Short-term response of sage-grouse nesting to conifer removal in the northern Great Basin. Rangeland Ecology and Management: online early

Lautenbach, J. M., R. Plumb, S. Robinson, D. Haukos, J. Pitman and C. A. Hagen. 2016. Lesser Prairie-Chicken avoidance of trees in a grassland landscape. Rangeland Ecology and Management online early

Hagen, C.A., D. C. Pavlacky, K. Adachi, F.E. Hornsby, T.J. Rintz, and L.L. McDonald. 2016. Multiscale occupancy modeling provides insights into range-wide conservation needs of lesser prairie-chicken (Tympanuchus palldicinctus). Condor 118: 597-612.

Ross, B., D. A. Haukos, C.A. Hagen, and J. C. Pitman. 2016. Landscape composition creates a threshold influencing Lesser Prairie-Chicken population resilience to drought. Global Ecology and Conservation. 6:179-188.

Robinson, S., D. Haukos, R. Plumb, C. A. Hagen, J. Pitman, J. Lautenbach, J. Kraft, D. Sullins, and J. Lautenbach.  2016. Lesser prairie-chickens fence collision risk across its northern distribution. Journal of Wildlife Management 80: 906-915.

Oyler-McCance, S., J. Johnson, R. DeYoung, M. Patten, L. Larrson, and C. A. Hagen. 2016. Lesser Prairie-Chicken Genetics a Potpourri of bottlenecks, hybrids, range expansion, and possible introgression. Conservation Genetics 17: 643-660.

Ross, B., D. A. Haukos, C.A. Hagen, and J. C. Pitman. 2016. The relative contribution of variation in climate to changes in Lesser Prairie-Chicken abundance. Ecosphere 7.

Garton, O., C.A. Hagen, G. Beauprez, S. Kyle, J. Pitman, D. Schoeling, and W. Van Pelt. 2016. Population Dynamics of the Lesser Prairie-Chicken. Pg. 49-76, In D. Haukos and C. Boal, editors. Ecology and Conservation of Lesser Prairie Chickens, Studies in Avian Biology.

Haukos, D. A., A. Flanders, J.C. Pitman, and C.A. Hagen. 2016. Lesser prairie-chickens of the sand sagebrush prairie. Pg, 281-298. In D. Haukos and C. Boal, editors. Ecology and Conservation of Lesser Prairie Chickens, Studies in Avian Biology.

Hagen, C.A. and D. Elmore. 2016. Conclusions, synthesis, and future directions. Pg., 345-351. In D. Haukos and C. Boal, editors. Ecology and Conservation of Lesser Prairie Chickens, Studies in Avian Biology.

Donnelly, P., D. Naugle, J. Maestas, and C.A. Hagen. 2016. Public lands and private waters: wetland scarcity and land tenure structure sage-grouse distributions. Ecosphere 7.

Winder, V. et al. (15 authors). 2015. Factors affecting female space use in ten populations of prairie chickens. Ecosphere 6:1-17.

Hansen, M. C., C. A. Hagen, D. A. Budeau, V. L. Coggins, B. S. Reishus.  2015.  Comparison of 3 Surveys for Estimating Forest Grouse Population Trends. Journal of Wildlife Management

Dusek, R. J., C.A. Hagen, J. C. Franson, D.A. Budeau, and E.K. Hoffmeister. 2014. Utilizing Hunter Harvest Effort to Survey for Wildlife Disease: a Case Study of West Nile Virus in Greater Sage-Grouse. Wildlife Society Bulletin

McDonald, L., G. Beauprez, G. Gardner, J. Griswold, C.A. Hagen, D. Klute, S. Kyle, J. Pitman, T. Rintz, D. Schoeling, J. Timmer, B. Van Pelt. 2014. Range-wide Population Size of the Lesser Prairie-Chicken: 2012-2013. Wildlife Society Bulletin, online early

Hagen, C. A., B. A. Grisham, C. W. Boal, and D. A. Haukos. 2014. A meta-analysis of lesser prairie-chicken nesting and brood-rearing habitats: Implications for habitat management. Wildlife Society Bulletin. doi: 10.1002/wsb.313

Baruch-Mordo, S., J. S. Evans, J. P. Severson, D. E. Naugle, J. D. Maestas, J. M. Kiesecker, M. J. Falkowski, C. A. Hagen, K. P. Reese. 2013.  Saving sage-grouse from the trees: A proactive solution to reducing a key threat to a candidate species. Biological Conservation 167:233-241.

Hansen, M., C. A. Hagen, T. Loughin, D. Budeau, V. Coggins, and B. Reishus. 2012. Temporal changes in age and sex ratios of forest grouse harvested in northeastern Oregon. Journal of Wildlife Management 76: 356-362.

Hagen, C. A., M.J. Willis, E. Glenn, and R. G.Anthony. 2011. Winter habitat selection by greater sage-grouse in southeastern Oregon. Western North American Naturalist 71:529-538.

Hagen, C. A.,  J. C. Pitman, T. L. Loughin, B. K. Sandercock, R. J. Robel, and R. D. Applegate. 2011. Potential impacts of anthropogenic features on lesser prairie-chicken habitat use. Studies in Avian Biology 39: 63-75.

Hagen, C. A. 2011.Predation on greater sage-grouse: facts, process and effects. pp 95-100. In S.T. Knick, and J.W. Connelly (editors). Greater sage-grouse: ecology and conservation of a landscape species and its habitats.  Studies in Avian Biology 38. University of Califorina Press, Berkeley, CA.

Garton, E. O., J. W. Connelly, J.S. Horne, C. A. Hagen, A. Moser, and M. A. Schroeder. 2011.Greater sage-grouse population dynamics and probability of persistence. Pp 293-381. In S.T. Knick, and J.W. Connelly (editors). Greater sage-grouse: ecology and conservation of a landscape species and its habitats.  Studies in Avian Biology 38. University of California Press, Berkeley, CA.

Connelly, J.W., C. A. Hagen, and M. A. Schroeder. 2011. Characteristics and dynamics of greater sage-grouse   populations. Pp. 53-68. In S.T. Knick, and J.W. Connelly (editors). Greater sage-grouse: ecology and conservation of a landscape species and its habitats.  Studies in Avian Biology 38. University of California Press, Berkeley, CA.

Hagen, C. A. Impacts of energy development on prairie grouse ecology: a research synthesis. 2010. Transactions of the North American Wildlife and Natural Resources Conference 75: 98-105.

Broms, K., J. R. Skalski, J. J. Millspaugh, C. A. Hagen, J. H. Schulz. 2010. Using statistical population reconstruction to estimate demographic trends in small game populations. 74:310-317.

Hagen, C. A., J. C. Pitman, B. K. Sandercock, D.H. Wolfe, R. J. Robel, R. D. Applegate, and S. J. Oyler-McCance. 2010. Regional variation in mtDNA of the lesser prairie-chicken. Condor 112: 29-37.

Hagen, C. A., J. C. Pitman, B. K. Sandercock, R. J. Robel, and R. D. Applegate.2009. Spatial variation in lesser prairie-chicken demography: a sensitivity analysis of population dynamics and management alternatives. Journal of Wildlife Management 73:1325-1332

Hagen, C. A., and T. M. Loughin. 2008. Productivity estimates from upland bird harvests: estimating variance and necessary sample sizes. Journal of Wildlife Management. 72:1369-1375.

Connelly, J.W., C. E. Braun, M. A. Schroeder, and C. A. Hagen. 2007. Setting the Record Straight: A Response to “Sage-Grouse at the Crossroads.” Rangelands 29: 35-39.

Hagen, C. A., and R. J. Bildfell. An Observation of Clostridium perfringens in Greater Sage-Grouse.  2007. Journal of Wildlife Diseases 43: 545-547.

Hagen, C. A., J. W. Connelly, and M. A. Schroeder. 2007. A meta-analysis of greater sage-grouse Centrocercus urophasianus nesting and brood rearing habitat. Wildlife Biology 12(Suppl): 27-35.

Hagen, C. A., J. C. Pitman, R. J. Robel, T. M. Loughin, and R. D. Applegate. 2007. Niche partitioning  by lesser prairie-chickens Tympanuchus pallidicinctus and ring-necked pheasants Phasianus colchicus in southwestern Kansas. Wildlife Biology 12(Suppl): 51-58.

Hagen, C. A., J. C. Pitman, B. K. Sandercock,R. J. Robel, and R. D. Applegate. 2007. Age-specific  survival and probable causes of mortality in female lesser-prairie-chickens. Journal of Wildlife Management 71: 518-525.

J. Pitman, B. E. Jamison, C. A. Hagen, R. J. Robel, T. M. Loughin and R. D. Applegate. 2006. Brood break-up and dispersal of juvenile lesser prairie-chickens in Kansas. Prairie Naturalist. 38: 86-99.

Hagen, C. A., B. K. Sandercock, J. C. Pitman, R. J. Robel, and R. D. Applegate. 2006. Radiotelemetry survival estimates of lesser-prairie-chickens: are there transmitter biases? Wildlife Society Bulletin 34: 1064-1069.

J.C. Pitman, C. A. Hagen, B. E. Jamison, R. J. Robel, T. M. Loughin and R. D. Applegate. 2006 Survival of juvenile lesser prairie-chickens in Kansas. Wildlife Society Bulletin. 34: 675-681.

Schroeder, M. A., J. W. Connelly, C. L. Wamboldt, C. E. Braun, C. A. Hagen, and M. R. Frisinia. 2006.  Society for range management issue paper: ecology and management of sage grouse and sage- grouse habitat—a reply. Rangelands 28: 3-7.

J.C. Pitman, C. A. Hagen, R. J. Robel, T. M. Loughin and R. D. Applegate. 2006. Nesting ecology of the lesser prairie-chicken in Kansas. Wilson Journal of Ornithology118: 23-35.

Hagen, C. A., G. C. Salter, J. C. Pitman, R. J. Robel, and R. D. Applegate. 2005. Lesser prairie-chicken  brood habitat: invertebrate biomass and vegetation. Wildlife Society Bulletin 33: 1080-1091.

J.C. Pitman, C. A. Hagen, R. J. Robel, T. M. Loughin, and R. D. Applegate. 2005. Location and success of lesser prairie-chicken nests in relation to human disturbance. Journal of Wildlife Management 69: 1259-1269

Hagen, C. A. 2005. Lesser Prairie-Chicken (Tympanuchus pallidicinctus). The Birds of North America  Online. (A. Poole, Ed.) Ithaca: Cornell Laboratory of Ornithology; Retrieved from The Birds of  North American Online database: http://bna.birds.cornell.edu/BNA/account/lesser prairie- chicken.

Hagen, C. A., J. C. Pitman, B. K. Sandercock, R. J. Robel, and R. D. Applegate. 2005. Age specific  variation in apparent survival rates of male lesser-prairie-chickens. Condor 107:78-86

J.C. Pitman, C. A. Hagen, R. J. Robel, T. M. Loughin, and R. D. Applegate. 2005. Gender identification and growth of juvenile lesser prairie-chickens Condor 107:87-96.

Robel, R. J., J. A. Harrington, C. A. Hagen, J. C. Pitman, and R. R. Recker. 2004. Effect of energy development and human activity on the use of sand sagebrush habitat by lesser prairie-chickens in  southwestern Kansas. Transactions of the North American Natural Resources Conference 69: 251-266

Hagen, C. A., J. C. Pitman, R. J. Robel, and R. D. Applegate. 2004. Morphology of lesser-prairie- chickens in Kansas. Prairie Naturalist 36:95-101.

Silvy, N. J., and C. A. Hagen. 2004. Introduction: management of imperiled prairie grouse species and their habitat. Wildl Society Bulletin 32: 2-5.

Hagen, C. A.,  B. E. Jamison, K. M. Giesen, and T. Z. Riley. 2004. Management guidelines for lesser  prairie-chicken habitats and their populations. Wildlife Society Bulletin 32:69-82.

Robel, R. J., T. L. Walker, C. A. Hagen, R. K. Ridley, K. E. Kemp, and R. D. Applegate. 2003.  Internal helminth parasites of the lesser prairie-chicken Tympanuchus pallidicinctus in southwestern Kansas: incidence, burden, and effects. Wildlife Biology. 9: 341-350.

Hagen, C. A., B. E. Jamison, R. J Robel, and R. D. Applegate. 2002. Parasitism of Lesser  Prairie-Chicken Nests by Ring-necked Pheasant. Wilson Bulletin 114: 522-524.

Hagen, C. A., S. Crupper, R.D. Applegate and R. J. Robel. 2002. Prevalence of Mycoplasma antibodies in lesser prairie-chicken sera. Avian Diseases 46: 708-712.

Hagen, C. A., J. C. Pitman, R. J. Robel, and G. C. Salter. 2001. Use of sandsage habitat by lesser  prairie-chickens in southwestern Kansas: a progress report. Grouse News 21: 6-9.

Hagen, C. A., N.C. Kenkel, D. J. Walker, R. K. Baydack, and C. E. Braun. 2001. Fractal-based  spatial analysis of telemetry data. Pages 167-187 in J. Millspaugh and J. Marzluff, editors. Radio Tracking and Animal Populations. Academic Press, San Diego.