Cooperative Fish and Wildlife Research Units Program: Montana Fishery
Education, Research and Technical Assistance for Managing Our Natural Resources

Montana Fishery Staff Member


Dr. Christopher Guy

Christopher Guy

Assistant Unit Leader
Phone: (406) 994 - 3491
Email: cguy@usgs.gov
Alt. Email: cguy@montana.edu
Personal website

Education

  • Ph D South Dakota State University 1993

Biography

Most of my research falls within the broad mission of ecology of fishery and aquatic resources. A major, consistent research theme has been on native fish assemblage restoration, a prominent ecological and societal issue in Rocky Mountain and Great Plains ecosystems.

Teaching Interest

Fisheries Science, Fisheries Techniques

Research Interest

Fish ecology, fishery stock assessment, fishery management regulations and tools, native and non-native species interactions

Research Publications Publication Date
Wuellner, M. R., and C. S. Guy. 2008. Status assessment of burbot in Montana: importance of a standardized sampling protocol. Intermountain Journal of Sciences 14:61-77. January 2010
Wuellner, M. R., R. G. Bramblett, C. S. Guy, A. V. Zale, D. R. Roberts, and J. Johnson. 2013. Reach and catchment-scale characteristics are relatively uninfluential in explaining the occurrence of stream fish species. Journal of Fish Biology 82:1497-1513. May 2013
Williams, J. R., C. S. Guy, T. M. Koel, P. Bigelow. 2020. Targeting aggregations of telemetered lake trout to increase gillnetting suppression efficacy. North American Journal of Fisheries Management 40:225-231. January 2020
Tripe, J. A., and C. S. Guy. 1999. Spatial and temporal variation in habitat and fish community characteristics in a Kansas Flint Hills stream. Ecology of Freshwater Fish. November 1999
Thomas, N. A., C. S. Guy, T. M. Koel, and A. V. Zale. 2019. In-situ evaluation of benthic suffocation methods for suppression of invasive Lake Trout embryos in Yellowstone Lake. North American Journal of Fisheries Management 39:104-111. January 2019
Tennant, L. B., R. E. Gresswell, C. S. Guy, and M. H. Meeuwig. 2015. Spawning and rearing behavior of bull trout in a headwater lake ecosystem. Environmental Biology of Fishes DOI 10.1007/s10641-015-0461-x. November 2015
Talbott, M. J., J. P. Van Eenennaam, J. Linares-Casenave, S. I. Doroshov, C. S. Guy, P. Struffenegger, M. A. H. Webb. 2011. Investigating the use of plasma testosterone and estradiol-17β to detect ovarian follicular atresia in farmed white sturgeon, Acipenser transmontanus. Aquaculture 315:283-289. April 2011
Syslo, J. M., T. O. Brenden, C. S. Guy, T. M. Koel, P. E. Bigelow, P. D. Doepke, J. L. Arnold, and B. E. Ertel. 2020. Could ecological release buffer suppression efforts for non-native lake trout (Salvelinus namaycush) in Yellowstone Lake, Yellowstone National Park? Canadian Journal of Fisheries and Aquatic Sciences 77:1010-1025. June 2020
Syslo, J. M., C. S. Guy, and T. M. Koel. 2016. Feeding ecology of native and nonnative salmonids during the expansion of a nonnative apex predator in Yellowstone Lake, Yellowstone National Park. Transactions of the American Fisheries Society 145:476-492 May 2016
Syslo, J. M., C. S. Guy, and B. S. Cox. 2013. Comparison of harvest scenarios for the cost-effective suppression of lake trout in Swan Lake, Montana. North American Journal of Fisheries Management. September 2013
Syslo, J. M., C. S. Guy, P. E. Bigelow, P. D. Doepke, B. D. Ertel, and T. M. Koel. 2011. Response of non-native lake trout (Salvelinus namaycush) to 15 years of harvest in Yellowstone Lake, Yellowstone National Park. Canadian Journal of Fisheries and Aquatic Sciences 68:2132-2145. March 2012
Strakosh, T. R., K. B. Gido, and C. S. Guy. 2009. Effects of American water willow establishment on age-0 largemouth bass Micropterus salmoides in Kansas reservoirs. Transactions of the American Fisheries Society. February 2009
Strakosh, T. R., J. L. Eitzmann, K. B. Gido, and C. S. Guy. 2005. The response of water willow, Justicia americana, to different inundation and desiccation regimes. North American Journal of Fisheries Management 25:1476-1485. November 2005
Schultz, R. D., C. S. Guy, and D. A. Robinson. 2002. Recruitment of white bass in Kansas reservoirs: relations to reservoir hydrology and gizzard shad. North American Journal of Fisheries Management 22:671-676. May 2002
Schrank, S. J., and C. S. Guy. 2002. Age, growth, and gonadal characteristics of adult bighead carp Hypophthalmichthys nobilis in the lower Missouri River. Environmental Biology of Fishes. September 2002
Schrank, S. J., P. J. Braaten, and C. S. Guy. 2001. Spatiotemporal variation in density of larval bighead carp in the lower Missouri River. Transactions of the American Fisheries Society 130:809-814. August 2001
Schrank, S. J., C. S. Guy, and J. F. Fairchild. 2003. Competitive interactions between age-0 bighead carp and paddlefish. Transactions of the American Fisheries Society 132:1222-1228. November 2003
Schrank, S. J., C. S. Guy, M. R. Whiles, and B. L. Brock. 2001. Influence of instream and landscape-level factors on the distribution of Topeka shiners Notropis topeka in Kansas streams. Copeia 2001 (2)413-421. June 2001
Scholl, E. A., W. F. Cross, C. V. Baxter, and C. S. Guy. 2020. Uncovering process domains in large rivers: Patterns and potential drivers of benthic substrate heterogeneity in two North American riverscapes. Geomorphology. https://doi.org/10.1016/j.geomorph.2020.107524 December 2020
Schoenebeck, C. W., T. R. Strakosh, and C. S. Guy. 2005. Effect of block nets and time of day on backpack electrofishing catches in Kansas reservoirs. North American Journal of Fisheries Management 25:604-608. May 2005
Russell, R. E., D. A. Schmetterling, C. S. Guy, B. B. Shepard, R. McFarland, and D. Skaar. 2012. Evaluating a fish monitoring protocol using state-space hierarchical models. Open Fish Science Journal 5:1-8. March 2012
Richards, R. R., C. S. Guy, M .A. H. Webb, W. M. Gardner, and C. B. Jensen. 2014. Spawning related migration of shovelnose sturgeon in the Missouri River above Fort Peck Reservoir, Montana. Journal of Applied Ichthyology 30:1-13. January 2014
Quist, M. C., and C. S. Guy. 2001. Growth and mortality of prairie stream fishes and relations with instream habitat. Ecology of Freshwater Fish 10:88-96. January 2001
Quist, M. C., and C. S. Guy. 1999. Variation in population characteristics of shovelnose sturgeon in the Kansas River. The Prairie Naturalist. November 1999
Quist, M. C., R. J. Bernot, C. S. Guy, and J. L. Stephen. 2001. Seasonal variation in population characteristics of gizzard shad. Journal of Freshwater Ecology 16(4): 641-646. December 2001
Quist, M. C., P. A. Fay, C. S. Guy, A. K. Knapp, and B. N. Rubenstein. 2003. The influence of disturbance from military training activities on terrestrial-aquatic linkages in a tallgrass prairie ecosystem. Ecological Applications 13:432-442. April 2003
Quist, M. C., K. R. Pember, C. S. Guy, and J. L. Stephen. 2004. Variation in larval fish communities: implications for management and sampling designs in reservoir systems. Fisheries Management and Ecology 11:107-116. April 2004
Quist, M. C., J. L. Stephen, C. S. Guy, and R. D. Schultz. 2004. Age structure and mortality of walleyes in Kansas reservoirs: applications for establishing realistic management objectives. North American Journal of Fisheries Management. August 2004
Quist, M. C., C. S. Guy, and R. J. Bernot. 2004. Anti-behavior of larval walleyes and saugeyes. Transactions of the Kansas Academy of Science: 69-76. January 2004
Quist, M. C., C. S. Guy, and J. L. Stephen. 2003. Recruitment dynamics of walleyes in Kansas reservoirs: generalities with natural systems and effects of a centrarchid predator. Canadian Journal of Fisheries and Aquatic Sciences 60:1-10 July 2003
Quist, M. C., C. S. Guy, and J. L. Stephen. 2001. The effect of light shock on short-term survival of walleye fry. Transactions of the Kansas Academy of Science 104:3-4. November 2001
Quist, M. C., C. S. Guy, R. J. Bernot, and J. L. Stephen. 2004. Factors influencing growth and survival of larval walleye in Glen Elder Reservoir, Kansas. Fisheries Research 67:215-225. April 2004
Quist, M. C., C. S. Guy, R. J. Bernot, and J. L. Stephen. 2002. Seasonal variation in condition, growth, and food habits of walleyes in a Great Plains reservoir and simulated effects of an altered thermal regime. Journal of Fish Biology 61:1329-1344. May 2003
Quist, M. C., C. S. Guy, R. J. Bernot, and J. L. Stephen. 2002. Efficiency of removing food items from walleyes using acrylic tubes. Journal of Freshwater Ecology 17:179-184. June 2002
Quist, M. C., C. S. Guy, R. J. Bernot, and J. L. Stephen. 2002. Ecology of larval white bass in a large Kansas reservoir. North American Journal of Fisheries Management 22:637-642. May 2002
Quist, M. C., C. S. Guy, R. D. Schultz, and J. L. Stephen. 2003. Latitudinal comparisons of walleye growth in North America and factors influencing growth of walleyes in Kansas reservoirs. North American Journal of Fisheries Management 23:677-692. August 2003
Quist, M. C., C. S. Guy, M. A. Pegg, P. J. Braaten, C. L. Pierce, and V. H. Travnichek. 2002. Potential influence of harvest on shovelnose sturgeon populations in the Missouri River system: A case for pro-active management. North American Journal of Fisheries Management 22:537-549. May 2002
Proboszcz, S. L., and C. S. Guy. 2006. Use of habitat enhancement structures by spotted bass in natural and experimental streams. The Prairie Naturalist 38:223-238. April 2007
Pegg, M. A., K. Pope, and C. S. Guy. 1999. Evaluation of current professional certification use. Fisheries. November 1999
Olson, N. W., C. S. Guy, and K. D. Koupal. 2007. Interactions among hybrid striped bass, white bass, and walleye in a polymictic Great Plans reservoir. North American Journal of Fisheries Management 27:268-278. February 2007
Oldenburg, E. W., C. S. Guy, E. S. Cureton, M. A. H. Webb, and W. M. Gardner. 2011. Effects of acclimation on poststocking dispersal and physiological condition of age-1 pallid sturgeon. Journal of Applied Ichthyology 27:436-443. April 2011
Neumann, R. M., C. S. Guy, and D. W. Willis. 2012. Length, weight, and associated indices. Pages 637-676 in A.V. Zale, D. L. Parrish, and T. M. Sutton, editors. Fisheries techniques, 3rd edition. American Fisheries Society, Bethesda, Maryland. December 2012
Mullen, J. A., R. G. Bramblett, C. S. Guy, A. V. Zale, and D. W. Roberts. 2011. Determinants of fish assemblage structure in northwestern Great Plains streams. Transactions of the American Fisheries Society 140:271-281. | Abstract April 2011
Mullen, J. A., R. G. Bramblett, C. S. Guy, and A. V. Zale. 2011. Determinants of fish assemblage structure in northwestern Great Plains streams. Transactions of the American Fisheries Society 140:271-281. July 2011
Meeuwig, M. H., C. S. Guy, and W. A. Fredenberg. 2008. Influence of landscape characteristics on fish species richness among lakes of Glacier National Park, Montana. Intermountain Journal of Sciences 14:1-16. November 2008
Meeuwig, M. H., C. S. Guy, and W. A. Fredenberg. 2011. Use of cover habitat by bull trout, Salvelinus confluentus, and lake trout, Salvelinus namaycush, in a laboratory environment. Environmental Biology of Fishes 90:367-378. June 2011
Meeuwig, M. H., C. S. Guy, and W. A. Fredenberg. 2011. Trophic relationships between a native and nonnative predator in a system of natural lakes. Ecology of Freshwater Fish 20:no. doi:10.111/j.1600-0633.2011.00498.x. May 2011
Meeuwig, M. H., C. S. Guy, S. T. Kalinowski, and W. A. Fredenberg. 2010. Landscape influences on genetic differentiation among bull trout populations in a stream-lake network. Molecular Ecology 19:3620-3633. (INVITED) August 2010
McGarvey, L. M., L. J. Halvorson, J. E. Ilgen, C. S. Guy, J. G. McLellan, and M. A. H. Webb. 2020. Gametogenesis and assessment of non-lethal tools to assign sex and reproductive condition in Burbot Lota lota. Transactions of the American Fisheries Society 149:225-240. February 2020
McGarvey, L. M., J. E. Ilgen, C. S. Guy, J. G. McLellan, and M. A. H. Webb. 2021. Gonad size measured by ultrasound to assign stage of maturity in burbot. Journal of Fish and Wildlife Management 12:241-249. July 2021
Lewandoski, S. A., C. S. Guy, A. V. Zale, P. C. Gerrity, J. W. Deromdei, K. M. Johnson, D. L. Skates. 2017. Empirical estimation of recreational exploitation of burbot, Lota lota, in the Wind River drainage of Wyoming using a multistate capture-recapture model. Fisheries Management and Ecology 24:298-307. May 2017
Koel, T. M., N. A. Thomas, C. S. Guy, P. D. Doepke, D. J. MacDonald, A. S. Poole, W. M. Sealey, and A. V. Zale. 2020. Organic pellet decomposition induces mortality of lake trout embryos in Yellowstone Lake. Transactions of the American Fisheries Society 149:57-70. January 2020
Koel, T. M., J. L. Arnold, P. E. Bigelow, T. O. Brenden, J. D. Davis, C. R. Detjens, P. D. Doepke, B. D. Ertel, H. C. Glassic, R. E. Gresswell, C. S. Guy, D. J. MacDonald, M. E. Ruhl, T. J. Stuth, D. P. Sweet, J. M. Syslo, N. A. Thomas, L. M. Tronstad, P. J. White, and A. V. Zale. 2020. Yellowstone Lake ecosystem restoration: a case study for invasive fish management. Fishes. . https://doi.org/10.1111/jai.14067 June 2020
Kalinowski, S. T., C. C. Muhlfeld, C. S. Guy, and B. S. Cox. 2010. Founding population size of an aquatic invasive species. Conservation Genetics (Online First). February 2010
Horton, T. B., and C. S. Guy. 2002. Habitat use and movement patterns of spotted bass in a Kansas stream. Black Bass: Ecology, Conservation, and Management. American Fisheries Society, Bethesda December 2002
Horton, T. B., J. S. Tillma, and C. S. Guy. 2000. Vulnerability of spotted bass to angling in Kansas streams. Journal of Freshwater Ecology 15:7-11. March 2000
Horton, T. B., C. S. Guy, and J. Pontius. 2004. Influence of tracking-interval on estimations of movement and habitat use. North American Journal of Fisheries Management 24:690-696. May 2004
Holmquist, L. M., C. S. Guy, M. A. H. Webb, and A. Tews. 2019. First maturity and spawning periodicity of hatchery-origin pallid sturgeon in the upper Missouri River above Fort Peck Reservoir, Montana. Journal of Applied Ichthyology 35: 138-148. February 2019
Holmquist, L. M., C. S. Guy, A. Tews, D. J. Trimpe, and M. A. H. Webb. 2019. Reproductive ecology and movement of pallid sturgeon in the upper Missouri River, Montana. Journal of Applied Ichthyology 35:1069-1083 August 2019
Hansen, M. J., C. S. Guy, P. Budy, and T. E. McMahon. 2019. Trout as native and non-native species: a management paradox. Pages 645-684 in J. L. Kershner, J. E. Williams, R. E. Gresswell, and J. Lobón-Cerviá. Trout and char of the world. American Fisheries Society, Bethesda, Maryland. September 2019
Hansen, M. J., C. S. Guy, C. R. Bronte, and N. A. Nate. 2021. Life history and population dynamics. Pages 253-286 in A. M. Muir, C. C. Krueger, M. J. Hansen, and S. C. Riley, editors. Lake Charr Salvelinus namaycush: biology, ecology, distribution, and management. Fish & Fisheries Series, D. L. G. Noakes, editor. Springer. March 2021
Guy, C.S., H. B. Treanor, K. M. Kappenman, E. A. Scholl, J. E. Ilgen, and M. A. H. Webb. 2015. Broadening the regulated-river management paradigm: a case history of the forgotten dead zone hindering pallid sturgeon recovery. Fisheries 40:6-14. January 2015
Guy, C. S., and M. L. Brown, editors. 2007. Analysis and interpretation of freshwater fisheries data. American Fisheries Society, Bethesda, Maryland. September 2007
Guy, C. S., T. L. Cox, J. R. Williams, C. D. Brown, R. W. Eckelbecker, H. S. Glassic, M. C. Lewis, P. A. C. Maskill, L. M. McGarvey, and M. J. Siemiantkowski. 2021. A paradoxical knowledge gap in science for critically endangered fishes and game fishes during the sixth mass extinction. Scientific Reports 11:8447. https://doi.org/10.1038/s41598-021-87871-y

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April 2021
Guy, C. S., R. M. Neumann, and D. W. Willis. 2006. New terminology for proportional stock density (PSD) and relative stock density (RSD): proportional size structure (PSS). Fisheries 31(2):86-87 February 2006
Guy, C. S., R. M. Neumann, D. W. Willis, and R. O. Anderson. 2007. Proportional size distribution: a further refinement of population size structure index terminology. Fisheries 32(7): 348. July 2007
Guy, C. S., R. D. Schultz, and M. A. Colvin. 2002. Ecology and management of white bass Morone chrysops. North American Journal of Fisheries Management 22:606-608. May 2002
Guy, C. S., R. A. Schultz, and C. A. Cox. 2002. Variation in gonad development, growth, and condition of white bass in Fall River Reservoir, Kansas. North American Journal of Fisheries Management 22:643-651. May 2002
Guy, C. S., P. J. Braaten, D. P. Herzog, J. Pitlo, and R. S. Rogers. 2009. Warmwater rivers. Pages 59-84 in S. Bonar, W. Hubert, and D. Willis, editors. Standard sampling methods for sampling North American freshwater fishes. American Fisheries Society, Bethesda, Maryland. August 2009
Guy, C. S., McMahon, T. E., W. A. Fredenberg, C. J. Smith, D. W. Garfield, and B. S. Cox. 2011. Diet overlap of top-level predators in recent sympatry: bull trout and non-native lake trout in Swan Lake, Montana. Journal of Fish and Wildlife Management 2:183-189. November 2011
Guy, C. S., E. W. Oldenburg, and P. C. Gerrity. 2009. Conditional capture probability for Scaphirhynchus spp. in drifting-trammel nets. North American Journal of Fisheries Management 29:817-822. May 2009
Guy, C. S. 2011. Review of: Biology, management, and conservation of lampreys in North America. The Quarterly Review of Biology 86:62. May 2011
Goodman, B. J., C. S. Guy, S. L. Camp, W. M. Gardner, K. M. Kappenman, and M. A. H. Webb. 2012. Shovelnose sturgeon spawning in relation to varying discharge treatments in a Missouri River tributary. River Research and Applications DOI:10.1002/rra.2587. July 2012
Goeckler, J. M., M. C. Quist, J. A. Reinke, and C. S. Guy. 2003. Population characteristics and evidence of natural reproduction of blue catfish in Milford Reservoir, Kansas. Transactions of the Kansas Academy of Sciences 106:149-154 November 2003
Glassic, H. C., K. C. Heim, and C. S. Guy. 2019. Creating figures in R that meet the AFS style guide: standardization and supporting script. Fisheries 44:539-544. November 2019
Glassic, H. C., C. S. Guy, J. J. Rotella, C. J. Nagel, D. A. Schmetterling and S. R. Dalbey. 2020. Fort Peck paddlefish population survival and abundance in the Missouri River. Journal of Applied Ichthyology 36:559-567. https://doi.org/10.1111/jai.14067 June 2020
Glaid, J., P. C. Gerrity, and C. S. Guy. 2021. Burbot (Lota lota) exhibit plasticity in life-history traits in a small drainage at the southwestern-most extent of the species' native range. Journal of Applied Ichthyology. https://onlinelibrary.wiley.com/doi/abs/10.1111/jai.14243
June 2021
Gido, K. B., C. S. Guy, T. R. Strakosh, R. J. Bernot, K. Mitchell, and M. Shaw. 2002. Long-term changes in the fish assemblages of the Big Blue River basin 40 years after the construction of Tuttle Creek Reservoir. Kansas Academy of Sciences 105:193-208. December 2002
Gerrity, P. C., C. S. Guy, and W. M. Gardner. 2008. Habitat use of juvenile pallid sturgeon and shovelnose sturgeon with implications for water-level management in a downstream reservoir. North American Journal of Fisheries Management 28:832-843. June 2008
Gerrity, P. C., C. S. Guy, and W. M. Gardner. 2006. Juvenile pallid sturgeon are piscivorous: a call for conserving native cyprinids. Transactions of the American Fisheries Society 135:604-609. May 2006
Gates, K., C. Guy, A. Zale, and T. Horton. 2009. Angler awareness of aquatic nuisance species and potential transport mechanisms. Fisheries Management and Ecology 16:448-456. November 2009
Gates, K. K., C. S. Guy, A. V. Zale, and T. B. Horton. 2009. Angler awareness of aquatic nuisance species and potential transport mechanisms. Fisheries Management and Ecology. October 2009
Gates, K. K., C. Guy, A. V. Zale, and T. B. Horton. 2008. Adherence of Myxobolus cerebralis myxospores to waders: implications for disease dissemination. North American Journal of Fisheries Managaement 28:1453-1458. October 2008
Galloway, B. T., C. C. Muhlfeld, C. S. Guy, W. F. Cross, C. C. Downs, and W. A. Fredenberg. 2016. A framework for assessing the feasibility of native fish conservation translocations: applications to threatened bull trout. North American Journal of Fisheries Management 36:754-768. July 2016
Furey, K. M., H. C. Glassic, C. S. Guy, T. M. Koel, J. L. Arnold, P. D. Doepke, and P. E. Bigelow. 2020. Diets of longnose sucker in Yellowstone Lake, Yellowstone National Park, U.S.A. Journal of Freshwater Ecology. https://doi.org/10.1080/02705060.2020.1807421 August 2020
Fritz, K. M., J. A. Tripe, and C. S. Guy. 2002. Recovery of three fish species to flood and seasonal drying in a tallgrass prairie stream. Kansas Academy of Sciences 105:209-218. December 2002
Fredenberg, C. R., C. C. Muhlfeld, C. S. Guy, V. S. D'Angelo, C. C. Downs, and J. M. Syslo. 2017. Suppression of invasive lake trout in an isolated backcountry lake in Glacier National Park. Fisheries Management and Ecology 24:33-48. January 2017
Franssen, N. R., K. B. Gido, C. S. Guy, J. A. Tripe, S. J. Schrank, T. R. Strakosh, K. N. Bertrand, C. M. Franssen, K. L. Pitts, and C. P. Paukert. 2006. Effects of floods and intermittence on fish assemblages in a prairie stream. Freshwater Biology 51:2072-2086 October 2006
Ferguson, J. M., M. L. Taper, C. S. Guy, and J. M. Syslo. 2012. Mechanisms of coexistence between native bull trout (Salvelinus confluentus) and non-native lake trout (Salvelinus namaycush): inferences from pattern-oriented modeling. Canadian Journal of Fisheries and Aquatic Sciences 69:755-769. February 2012
Dux, A. M., C. S. Guy, and W. A. Fredenberg. 2011. Spatiotemporal distribution and population characteristics of a nonnative lake trout population, with implications for suppression. North American Journal of Fisheries Management 31:187-196. July 2011
Driscoll, S. C., H. C. Glassic, C. S. Guy, and T. M. Koel. 2021. Presence of microplastics in the food web of the largest high-elevation lake in North America. Water. 13, 264. https://doi.org/10.3390/w13030264 | Download January 2021
Delp, J. G., J. S. Tillma, M. C. Quist, and C. S. Guy. 2000. Age and growth of four centrarchid species in southeastern Kansas streams. Journal of Freshwater Ecology 15:475-478. December 2000
Cox, C. A., R. A. Schultz, and C. S. Guy. 2001. Diets of white bass in Fall River Reservoir, Kansas. Journal of Freshwater Ecology 16:429-433. June 2001
Cox, B. S., C. S. Guy, W. A. Fredenberg, and L. R. Rosenthal. In review. Baseline demographics of a non-native lake trout population and inferences for suppression from sensitivity-elasticity analyses. Fisheries Management and Ecology. doi:10.1111/fme.12024. February 2013
Cox, B. S., A. M. Dux, M. C. Quist, and C. S. Guy. 2012. Use of seismic air gun to reduce survival of non-native lake trout embryos: a tool for conservation? North American Journal of Fisheries Management 32:292-298. April 2012
Burlingame, M. N., and C. S. Guy. 2000. Diversity among anglers in Kansas: A focus on channel catfish anglers. Catfish 2000: proceedings of the international ictalurid symposium. American Fisheries Society, Symposium 24, Bethesda, Maryland. January 2000
Brown, P. J., C. S. Guy, and M. H. Meeuwig. 2017. A comparison of two mobile electrode arrays for increasing mortality of Lake Trout embryos. North American Journal of Fisheries Management 37:363-369. March 2017
Brown, M. L., and C. S. Guy. 2007. Science and statistics in fisheries research. Pages 1-29 in C. S. Guy and M. L. Brown, editors. Analysis and interpretation of freshwater fisheries data. American Fisheries Society, Bethesda, Maryland. September 2007
Briggs, M. A., L. K. Alberston, D. R. Lujan, L. M. Tronstad, H. C. Glassic, C. S. Guy, and T. M. Koel. 2021. Carcass deposition to suppress invasive lake trout causes differential mortality of two common benthic invertebrates in Yellowstone Lake. Fundamental and Applied Limnology 194:285-295. February 2021
Braaten, P. J., and C. S. Guy. 2004. First-year growth and overwinter survival of freshwater drum in the lower channelized Missouri River. Transactions of the American Fisheries Society 133:385-398. February 2004
Braaten, P. J., and C. S. Guy. 2002. Life history attributes of fishes along the latitudinal gradient of the Missouri River. Transactions of the American Fisheries Society 131:931-945. September 2002
Braaten, P. J., and C. S. Guy. 1999. Relations between physicochemical factors and abundance of fishes in tributary confluences of the lower channelized Missouri River. Transactions of the American Fisheries Society. November 1999
Braaten, P. J., M. R. Doeringsfeld, and C. S. Guy. 1999. Comparison of age and growth estimates for river carpsuckers using scales and dorsal fin ray sections. North American Journal of Fisheries Management 19:786-792. November 1999
Boyer, J. K., C. S. Guy, M. A. H. Webb, T. B. Horton, and T. E. McMahon. 2017. Reproductive ecology, spawning behavior, and juvenile distribution of mountain whitefish in the Madison River, Montana. Transactions of the American Fisheries Society 146:939-954. July 2017
Boyer, J. K., C. S. Guy, M. A. H. Webb, T. B. Horton, and T. E. McMahon. 2017. Gear comparison for sampling age-0 mountain whitefish in the Madison River, Montana. North American Journal of Fisheries Management 37:189-195. January 2017
Boyd, J. W., C. S. Guy, T. B. Horton, and S. A. Leathe. 2010. Effects of catch-and-release angling on salmonids at elevated water temperatures. North American Journal of Fisheries Management 30:898-907. September 2010
Bister, T. J., D. W. Willis, M. L. Brown, S. M. Jordan, R. M. Neumann, M. C. Quist, and C. S. Guy. 2000. Proposed standard weight (Ws) equations and standard length categories for 18 warmwater nongame and riverine fish species. North American Journal of Fisheries Management 20:570-574. May 2000
Bertrand, K. N., K. B. Gido, and C. S. Guy. 2006. An evaluation of single-pass versus multiple-pass backpack electrofishing to estimate trends in species abundance and richenss in prairie streams. Transactions of the Kansas Academy of Science 109:131-138. July 2006
Bernot, R. J., W. K. Dodds, M. C. Quist, and C. S. Guy. 2006. Temperature and kairomone induced life history plasticity in coexisting Daphnia. Aquatic Ecology 40:361-372. December 2006
Bernot, R. J., W. K. Dodds, M. C. Quist, and C. S. Guy. 2004. Spatial and temporal variability of zooplankton in a Great Plains reservoir. Hydrobiologia 525:101-112. August 2004
Bernot, R. J., W. K. Dodds, M. C. Quist, and C. S. Guy. 2004. Larval fish-induced phenotypic plasticity of coexisting Daphnia: an enclosure experiment. Freshwater Biology 49:87-97. January 2004
Bellgraph, B. J., C. S. Guy, W. M. Gardner, and S. A. Leathe. 2008. Competition potential between saugers and walleyes in nonnative sympatry. Transactions of the American Fisheries Society 137:790-800. April 2008
Project Completion Date
Evaluations of Methods to Introduce Mortality in Lake Trout Embryos January 2018
Reproductive readiness and behavioral ecology of wild hatchery-reared pallid sturgeon in the Missouri River above Fort Peck Reservoir, Montana June 2017
Evaluation of juvenile bull trout outmigration in Thompson Falls Reservoir December 2016
Electroshocking to Induce Mortality of Lake Trout Embryos in Yellowstone Lake June 2015
Annual Evaluation and Development of Benchmarks for Lake Trout Suppression in Yelowstone Lake June 2018
Assessment of Carbon Dioxide to Enhance Winter Kill in Natural Rearing Ponds used for Fish Production in the Northcentral Region December 2013
Spawning Characteristics and Early Life History of Mountain Whitefish in the Madison River, Montana June 2015
Density of Pallid Sturgeon and Food Web Dynamics in the Missouri River December 2017
Environmental and endogenous factors affecting egg quality and caviar yield in farmed sturgeon July 2017
Diet and temperature effects on growth of pallid and shovelnose sturgeon September 2014
Use of Mobile Electrofishing to Induce Mortality in Lake Trout Embryos June 2014
Exploitation, Abundance and Large-Scale Movements of Burbot in the Upper Wind River Drainage June 2014
Spawning of Pallid Sturgeon and Shovelnose Sturgeon in an Artificial Stream July 2014
Determining Ripeness in White Sturgeon Females to Maximize Yield and Quality of Caviar March 2017
Effects of the Reservoir Headwater Environment on Survival and Behavior of Larval Sturgeon October 2011
Upper Missouri River Basin Pallid Sturgeon Study September 2011
Lake Trout Suppression in Yellowstone Lake: Developing Benchmarks for Harvest and Sampling Design to Measure Efficacy. June 2014
Feasiblity Assessment for Translocation of Imperiled Bull Trout Populations in Glacier National Park. December 2012
Evaluate and refine benchmarks for lake trout and cutthroat trout populations in Yellowstone Lake December 2024
Quantify and prioritize lake trout spawning habitat for suppression December 2023
Spawning Characteristics and an Assessment of Juvenile Sampling Methods and Habitat for Mountain Whitefish in the Green River, Wyoming June 2022
Using Carcass and Carcass-Analog Material to Increase Lake T... December 2021
Quantifying Brown Trout and Lake Trout predation on Burbot and Mountain Whitefish June 2023
Enhancing survival and condition of first feeding larval pallid sturgeon through diet December 2022
Preliminary analysis of paddlefish data from the Missouri River above Ft. Peck Reservoir with a focus on population abundance and survival June 2019
Bull Trout Emigration Study December 2021
Quantifying spawning locations and habitat use by adult lake trout in Swan Lake, Montana October 2022
Spawning readiness, spawning location(s), and habitat use of pallid sturgeon in the Missouri River above Fort Peck Reservoir, Montana June 2020
Reproductive indices of hatchery-origin white sturgeon in the lower Columbia River, Canada June 2020
Lake Roosevelt burbot maturation study January 2019
Lake trout population modeling and annual assessment of suppression netting August 2021
Mobile tracking of lake trout on Yellowsttone Lake August 2019
Enhancing native fisheries through the USFWS Propagation Program in Region 6 September 2017
Buffalo Bill Reservoir walleye suppression June 2018
Briggs, Michelle
PhD
michelle.briggs32@gmail.com

Brown, Colter
Master's
browcolt@gmail.com

Eckelbecker, Robert
PhD
robert.eckelbecker@student.montana.edu

Glassic, Hayley
PhD
hcg0509@gmail.com

MacDonald, Drew
Master's
drew.j.macdonald.1@gmail.com

Siemiantkowski, Michael
Master's
mikesiemi123@gmail.com

Presentations Presentation Date
​​​​Glassic, H. C., S. C. Driscoll, C. S. Guy, and T. M. Koel. 2021. Presence of microplastics in the food web of the largest high-elevation lake in North America. 54<sup>th</sup> Annual Meeting of the Montana Chapter, American Fisheries Society. ONLINE March 2021
Williams, J., C. Guy, T. Koel, and P. Bigelow. 2018. Finding Lake Trout Aggregations in Yellowstone Lake to Improve Suppression Efficacy. Montana Chapter of the American Fisheries Society. January 2018
Williams, J., C. Guy, T. Koel, and P. Bigelow. 2018. Identifying non-native lake trout spawning locations in Yellowstone Lake to improve suppression efficacy. Western Division of the American Fisheries Society. PLATFORM. May 2018
Thomas, N., C. Guy, T. Koel, and A. Zale. 2017. Evaluation of suppression methods targeting non-native lake trout embryos in Yellowstone Lake. Annual Meeting of the Western Division of the American Fisheries Society, Missoula, Montana, 22-25 May 2017. May 2017
Thomas, N., C. Guy, T. Koel, A. Zale, A. Poole. 2018. Evaluation of suppression methods targeting non-native lake trout embryos in Yellowstone Lake. Montana Chapter of the American Fisheries Society. January 2018
Thomas, N. A., T. M. Koel, C. S. Guy, P. D. Doepke, D. J. MacDonald, A. S. Poole, W. M. Sealey, and A. V. Zale. 2020. Integrated pest management: from experimental evaluation to implementation of Lake Trout embryo suppression in Yellowstone Lake. Annual Meeting of the Montana Chapter of the American Fisheries Society, Kalispell, Montana, 25-28 February 2020. February 2020
Syslo, J. M., J. H. Powell, C. S. Guy, J. L. Arnold, and T. M. Koe. 2013. Evaluation of sampling designs for detecting change relevant to management objectives in Yellowstone Lake, Yellowstone National Park. 46th Annual Meeting of the Montana Chapter, American Fisheries Society. PLATFORM February 2013
Siemiantkowski, M. J., C. S. Guy, T. L. Cox, J. R. Williams, C. D. Brown, R. W. Eckelbecker, H. S. Glassic, M. C. Lewis, P. A. C. Maskill, and L. M. McGarvey. 2021. A paradoxical knowledge gap in science for critically endangered fishes and game fishes during the sixth mass extinction. 54<sup>th</sup> Annual Meeting of the Montana Chapter, American Fisheries Society. ONLINE March 2021
McGarvey, L. M., C. S. Guy, J. G. McLellan, and M. A. H. Webb. 2018. The assessment of ultrasound and plasma sex steroid concentrations to assign sex and stage of maturity in wild Burbot. Montana Chapter of the American Fisheries Society. January 2018
McCullough, A., C. S. Guy, T. Horton. 2016. Factors influencing abundance of Arctic grayling in the Bighole River. Montana Chapter of the American Fisheries Society. February 2016
Maskill, P. A. H., J. A. Crossman, C. S. Guy, L. J. Halvorson, and M. A. H. Webb. 2017. Determining sex and stage of maturity of hatchery origin white sturgeon in the lower Columbia River, Canada. American Fisheries Society Meeting. August 2017
Maskill, P. A. C., J. A. Crossman, C. S. Guy, L. J. Halvorson, and M. A. H. Webb. 2018. Determining sex and stage of maturity of hatchery origin white sturgeon in the lower Columbia River, Canada. Montana Chapter of the American Fisheries Society. January 2018
Lewis, M. C., C. S. Guy, and E. W. Oldenburg. 2021. Individual characteristics, population density, and environmental conditions explain temporal variation in out-migration dynamics of juvenile Bull Trout. 54<sup>th</sup> Annual Meeting of the Montana Chapter, American Fisheries Society. ONLINE​​​​ March 2021
Lewandoski, S., and C. Guy, J. Deromedi, P. Gerrity, and K. Johnson. 2014. Exploitation and population dynamics of burbot in the upper Wind River drainage. 2014 Annual Meeting of the Colorado-Wyoming Chapter of the American Fisheries Society. PLATFORM March 2014
Leathe, S., A. Tews, and C. S. Guy. 2014. Evolution of a strategy to monitor minnow abundance in the middle Missouri River. 47th Annual Meeting of the Montana Chapter, American Fisheries Society. PLATFORM February 2014
Kaus, D., C. S. Guy, J. Burckhardt, and T. Neebling. 2018. Feasibility of non-native walleye population suppression in Buffalo Bill Reservoir, Wyoming. Montana Chapter of the American Fisheries Society. January 2018
Holmquist, L. M., M. A. H. Webb, and C. S. Guy. 2015. Do Reproductively Active Hatchery-Reared and Released Pallid Sturgeon Behave like Reproductively Active Wild Pallid Sturgeon? 2105 North American Sturgeon and Paddlefish Society Meeting. October 2015
Holmquist, L. M., M. A. H. Webb, C. S. Guy. 2016. Reproductive Ecology of Hatchery-Reared and Wild Pallid Sturgeon in the upper Missouri River. Montana Chapter of the American Fisheries Society February 2016
Guy, C. S., H. B. Treanor, K. M. Kappenman, E. A. Scholl, J. E. Ilgen, and M. A. H. Webb. 2014. River-reservoir transition zone is an ecological sink for pallid sturgeon. 2014 Upper Basin Pallid Sturgeon Recovery Team meeting. PLATFORM March 2014
Guy, C. S., H. B. Treanor, K. M. Kappenman, E. A. Scholl, J. E. Ilgen, and M. A. H. Webb. 2014. Forgotten dead zone hinders pallid sturgeon recovery. 47th Annual Meeting of the Montana Chapter, American Fisheries Society. PLATFORM February 2014
Guy, C. S., H. B. Treanor, K. M. Kappenman, E. A. Scholl, J. E. Ilgen, and M. A. H. Webb. 2014. Forgotten dead zone hinders pallid sturgeon recovery. 2014 Missouri River Natural Resources Conference and BiOp forum. PLATFORM March 2014
Glassic, H, C. Guy, J. Rotella, C. Nagel, D. Schmetterling. 2019. Survival and abundance of paddlefish in the Missouri River above Ft. Peck Reservoir. 149th Annual Meeting of the American Fisheries Society. October 2019
Glaid, J., C. S. Guy, L. B. Mabbott. 2016. Outmigration dynamics of subadult bull trout in the Thompson River drainage, Montana. Montana Chapter of the American Fisheries Society. February 2016
Fredenberg, C. R., C. C. Muhlfeld, C. S. Guy, and C. C. Downs. 2013. Lake trout suppression in an isolated backcountry lake in Glacier National Park. 46th Annual Meeting of the Montana Chapter, American Fisheries Society. PLATFORM February 2013
Eckelbecker, R., C. S. Guy, S. Schmetterling, and N. Heili. 2021. Relative-condition equations for Montana fishes. 54<sup>th</sup> Annual Meeting of the Montana Chapter, American Fisheries Society. ONLINE March 2021
Dutton, A., C. Guy, E. Scholl, T. Cox, N. Beckman, W. Cross, J. Rotella. Guiding conservation of Pallid Sturgeon through the use of food webs. American Fisheries Society Meeting. August 2017
Dutton, A., C. Guy, E. Scholl, N. Beckman, W. Cross. J. Rotella. 2016. Diet overlap of two sturgeon species in the Missouri and Yellowstone Rivers. Montana Chapter of the American Fisheries Society. February 2016
Dutton, A., C. Guy, E. Scholl, N. Beckman, W. Cross. 2016. Diet overlap between pallid sturgeon and shovelnose sturgeon in the Missouri and Yellowstone rivers. 2016 Midwest Fish and Wildlife Conference. January 2016
Cox, T., C. Guy, M. Webb, and L. Holmquist. 2019. Reproductive Ecology of Hatchery-origin Pallid Sturgeon: A New Hope. 149th Annual Meeting of the American Fisheries Society. October 2019
Cox, T. A. Dutton, C. Guy. 2017. Gape size of two sturgeon species in the upper Missouri River. American Fisheries Society. August 2017
Cook, K., A. Zale, D. Stagliano, M. Anderson, C. Guy, L. Albertson, and C. Barnhart. 2020. Reproductive timing of Western Pearlshell mussels in Montana. Annual Meeting of the Montana Chapter of the American Fisheries Society, Kalispell, Montana, 25-28 February 2020. February 2020
Cook, K., A. Zale, D. Stagliano, M. Anderson, C. Guy, L. Albertson, and C. Barnhart. 2020. Reproductive timing of Western Pearlshell mussels in Montana. 2020 Symposium of the Pacific Northwest Native Freshwater Mussel Workgroup, Vancouver, Washington, 26 March 2020. March 2020
Cook, K., A. Zale, D. Stagliano, M. Anderson, C. Barnhart, C. Guy, and L. Albertson. 2021. Reproductive phenology and hermaphroditism of Western Pearlshell Mussels in Montana. Annual Meeting of the Montana Chapter of the American Fisheries Society, online, 1-5 March 2021. March 2021
Burckhardt, J. C., T. E. Neebling, D. J. Kaus, C. F. Johnson, C. S. Guy, and B. M. Johnson. 2018. Assessing the effects and probability of suppression of an illegally introduced walleye population. Western Division of the American Fisheries Society. May 2018
Brown, P., C. S. Guy, L. Rosenthal, T. Koel, and R. Gresswell. 2014. An electrode array for increasing lake trout embryo mortality. 47th Annual Meeting of the Montana Chapter, American Fisheries Society. PLATFORM February 2014
Brown, P. J., M. H. Meeuwig, and C. S. Guy. 2013. Efficacy of lake trout embryo destruction using a mobile electrode array. 46th Annual Meeting of the Montana Chapter, American Fisheries Society. PLATFORM February 2013
Brown, C. D., C. S. Guy, M. A. H. Webb, D. Rhea, and M. Smith. 2021. Reproductive ecology of mountain whitefish in dissimilar populations. 54<sup>th</sup> Annual Meeting of the Montana Chapter, American Fisheries Society. ONLINE March 2021
Boyer, J. K., C. S. Guy, M. A. H. Webb, and T. Horton. 2014. Behavioral ecology of mountain whitefish during spawning in the Madison River, Montana: implications for juvenile distribution. 47th Annual Meeting of the Montana Chapter, American Fisheries Society. PLATFORM February 2014
Boyer, J. K., C. S. Guy, M. A. H. Webb, and T. B. Horton. 2015. Understanding an overlooked native salmonid: spawning and early-life distribution of mountain whitefish in the Madison River, Montana. November 2015
Technical Publications Publication Date
Meeuwig, M. H., and C. S. Guy. 2007. Evaluation and action plan for protection of 15 threatened adfluvial populations of bull trout in Glacier National Park, Montana. Final Scientific Report, U.S. Fish Wildlife Service. August 2007
Jones-Wuellner, M. R., and C. S. Guy. 2004. Status of burbot in Montana. Montana Fish, Wildlife and Parks, Helena. December 2004
Guy, C. S., and M. R. Whiles. 2000. Assessment of physicochemical and landscape features influencing Topeka shiner (Notropis topeka) distribution in Kansas streams. Final Report, U.S. Geological Survey. January 2000
Fredenberg, W. A., M. H. Meeuwig, and C. S. Guy. 2007. Action plan to conserve bull trout in Glacier National Park, Montana. Final report, U.S.G.S. Montana Cooperative Fishery Research Unit, Bozeman. December 2008
Dux, A. M., and C. S. Guy. 2004. Evaluation of fish assemblages and habitat variables in streams bisecting the Going-to-the-Sun Road and peripheral roads in Glacier National Park. Glacier National Park, West Glacier. December 2004
Doepke, P. D., T. M. Koel, C. S. Guy, A. S. Poole, N. A. Thomas, and A. V. Zale. 2017. Lake Trout suppression alternatives to gillnetting. Yellowstone Science 25(1):70-73. January 2017
Cox, B. S., M. C. Quist, A. M. Dux, and C. S. Guy. 2011. Use of seismic air guns to reduce survival of salmonid eggs and embryos: a pilot study. Idaho Department of Fish and Game Report Number 11-04. November 2011