Education

PhD 2003	University of Missouri; Fisheries and Wildlife Sciences
MS 1999	University of Missouri; Fisheries and Wildlife Sciences
BS 1996	University of Nebraska; Forestry, Fisheries, and Wildlife

Professional Experience

2018 – Present	University of Connecticut, Professor & Department Head
2010 – 2018	University of Connecticut, Associate Professor
2004 – 2010	University of Connecticut, Assistant Professor

Undergraduate Courses

NRE 3245	Environmental Law (summer online)
NRE 3385W	Fisheries Techniques
NRE 4000W	Natural Resources Planning and Management (in rotation)
NRE 4335	Fisheries Management

Research Interests

Resource selection and habitat use of aquatic species; statistical modeling of habitat use; fish movement and migration; conservation of stream ecosystems; species of special conservation concern; fisheries sampling issues dealing with sample sizes and effort.

Publications

Recent Manuscripts

• Sullivan, C. J., N.H. Schumaker, and J.C. Vokoun. 2025. Warming riverscapes annually challenge the role of thermal refuges for thermoregulating salmonids. Journal of Applied Ecology, 00, 1–12. https://doi.org/10.1111/1365-2664.70146
• Manstan, S.E., C.J. Sullivan, and J.C. Vokoun. 2025. Movement and survival of stocked Brown Trout in a climate-altered fifth-order river. North American Journal of Fisheries Management DOI: 10.1093/najfmt/vqaf013
• Liberati, M.R., C.D. Rittenhouse, and J.C. Vokoun. 2024. Making decisions under demographic, management, and monitoring uncertainty with value of information. Journal of Wildlife Management DOI: 10.1002/jwmg.22582
• Sullivan, C.J., J.C. Vokoun. 2023. Disentangling effects of habitat on salmonid abundance in thermal refuges while accounting for imperfect detection. Ecosphere DOI: 10.1002/ecs2.4727
• Sullivan, C.J., C.D. Rittenhouse, and J.C. Vokoun. 2023. Camera traps reveal that terrestrial predators are pervasive at riverscape cold-water thermal refuges. Ecology and Evolution 13:e10316 DOI: 10.1002/ece3.10316
• Sullivan, C.J., J.C. Vokoun, and C.R. Perkins. 2023. Spatiotemporal changes in largemouth bass mercury concentrations from Connecticut waterbodies, 1995-2021. Environmental Monitoring and Assessment 195:780 DOI: 10.1007/s10661-023-11405-4
• Sullivan, C.J., J.C. Vokoun, A.M. Helton, M.A. Briggs, and B.L. Kurylyk. 2021. An ecohydrological typology for thermal refuges in streams and rivers. Ecohydrology DOI: 10.1002/eco.2295
• Kasper, J.M., J. Brust, A. Caskenette, J. McNamee, J.C. Vokoun, E.T. Schultz. 2020. Using harvest slot limits to promote stock recovery and broaden age structure in marine recreational fisheries: a case study. North American Journal of Fisheries Management 40: 1451-1471 DOI: 10.1002/nafm.10511
• Nathan, L.R., Y. Kanno, B.H. Letcher, A.B. Welsh, A.R. Whitely, and J.C. Vokoun. 2020. Evaluation of genetic structuring within GIS-dervired Brook Trout management units. Transactions of the American Fisheries Society 149:681-694 DOI: 10.100/tafs.10260
• Liberati, M.R., C.D. Rittenhouse, and J.C. Vokoun. 2020. Subdivision for conservation? Landscape and Urban Planning 195: 103723 DOI: 10.1016/j.landurbplan.2019.103723
• Pregler, K.C., N. Hagstrom, E.T. Schultz, J.C. Vokoun. 2019. Landscape factors predict local extirpation in an imperiled minnow species, bridle shiner (Notropis bifrenatus). Aquatic Conservation: Marine and Freshwater Ecosystems 29:1227-1237 DOI: 10.1002/aqc.3123
• Liberati, M.R., C.D. Rittenhouse, and J.C. Vokoun. 2019. Addressing ecological, economic, and social tradeoffs of refuge expansion in constrained landscapes. Landscape Ecology 34:627-647 DOI: 10.1007/s10980-019-00798-8
• Nathan, L.R., A.B. Welsh, and J.C. Vokoun. 2019. Watershed-level brook trout genetic structuring: evaluation and application of riverscape genetics models. Freshwater Biology 64:405-420. DOI: 10.1111/fwb.13230
• Hessenauer, J.-M., J.C. Vokoun, J. Davis, R. Jacobs, and E. O’Donnell. 2018. Size Structure Suppression and Obsolete Length Regulations in Recreational Fisheries Dominated by Catch-and-Release. Fisheries Research 200:33-42. DOI: 10.1016/j.fishres.2017.12.007
• Nathan, L., *A.A. Smith, A.B. Welsh, and J. Vokoun. 2018. Are culvert assessment scores an indicator of Brook Trout Salvelinus fontinalis population fragmentation? Ecological Indicators 84:208-217. DOI: 10.1016/j.ecolind.2017.08.033
• Click for additional manuscripts