Cooperative Research Units
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Dr. Shannon Brewer

Research Publications

  • Taylor, A.T., J.M. Long, M.R. Schwemm, and S.K. Brewer. 2018. Hybridization and Genetic Structure of Neosho Smallmouth Bass in the Ozark Highlands. To be submitted to North American Journal of Fisheries Management.
  • Mollenhauer, R., J Mouser, and SK Brewer. 2018. Sampling the stream landscape: improving the applicability of an ecoregion-level capture probability model for stream fishes. Canadian Journal of Fisheries and Aquatic Sciences

  • Mouser, J. B., R. Mollenhauer, and S. K. Brewer. 2018. Relationships between landscape constraints and a crayfish assemblage with consideration of competitor presence. Diversity and Distributions. DOI: 10.1111/ddi.12840
  • Mollenhauer, R. and S. K. Brewer. 2018. Snorkeling efficiency of sunfishes in clear, warmwater streams of the south-central United States. Journal of Fish and Wildlife Management. DOI: 10.3996/032018-JFWM-027
  • Zhou, Y., Garey A. Fox, Ronald Miller, Robert Mollenhauer, and Shannon K. Brewer. 2018. Groundwater Flux Estimation in Streams: A Thermal Equilibrium Approach. Journal of Hydrology 561:822-832.

  • Dyer, J. and S.K. Brewer. 2018. Habitat Associations of Three Crayfish Endemic to the Ouachita Mountain Ecoregion. Southeastern Naturalist 17:259-269.
  • Brewer, SK, TA Worthington, R Mollenhauer, DR Stewart, RA McManamay, L Guertault, and D Williams. 2018. Synthesizing models useful for ecohydrology and ecohydraulic approaches: An emphasis on integrating models to address complex research questions. Ecohydrology
  • Mollenhauer, R, D. Logue, and S.K. Brewer. 2018. Quantifying seining detection probability for small-bodied fishes of Great Plains sand-bed rivers. Transactions of the American Fisheries Society
  • Brewer, S. K., D. Shoup, and J. Datillo. 2018. Incorporating an approach to aid river and reservoir fisheries in an altered landscape. U.S. Department of Interior, Fish and Wildlife Service, Cooperator Science Series FWS/CSS-129-2018, Washington, D.C.
  • Worthington, TA, AE Echelle, JS Perkin, R Mollenhauer, N Farless, J Dyer, D Logue, and SK Brewer. 2018. The emblematic minnows of the North American Great Plains: A synthesis of threats and conservation opportunities. Fish and Fisheries 19:271-307.
  • Brewer, S. K. and R. Mollenhauer. 2017. Standardized methods for sampling Oklahoma streams. Cooperators Science Series
  • Farless, N. and S.K. Brewer. 2017.Thermal tolerances of fishes occupying groundwater and surface-water dominated streams. Freshwater Science
  • Mueller JS, TB Grabowski, SK Brewer, & TA Worthington. 2017. Effects of temperature, dissolved solids, and suspended solids on the survival and development of larval Arkansas River Shiner. Journal of Fish and Wildlife Management 8:79-88. Abstract | 
  • Musselman, W.C., T.A. Worthington, J. Mouser, D. Williams, and S.K. Brewer. 2017. Passive integrated transponder (PIT) tags: A review of current studies on warmwater fishes with notes on additional species. Journal of Fisheries and Wildlife Management
  • Burroughs, J. and S.K. Brewer. 2017. The tangled socio-political web: How do we give science a stronger voice and make our decisions more transparent? Fisheries. 42: 377-379. 10.1080/03632415.2017.1276349.
  • Mollenhauer, R and SK Brewer. 2017. Multinomial N-mixture models improve the applicability of electrofishing for developing population estimates of stream-dwelling Smallmouth Bass. North American Journal of Fisheries Management

  • Thomas A. Worthington, Zhang, Tianjiao , Daniel R. Logue, Aaron R. Mittelstet, and Shannon K. Brewer. 2016. Landscape and flow metrics affecting the distribution of a federally-threatened fish: Improving management, model fit, and model transferability. Ecological Modelling 342 (2016) 1–18 Abstract | 
  • Taylor, A., J.M. Long, M.R. Schwemm, M.D. Tringali, and S.K. Brewer. 2016. Identification of Neosho Smallmouth Bass (Micropterus dolomieu velox)
    Stocks for Possible Introduction into Grand Lake, Oklahoma. Final Report to Environmental Department,
    The Peoria Tribe of Indians of Oklahoma. U.S. Fish and Wildlife Service, Cooperator Science Series 121-2016.
    Publisher Website | 
  • McManamay, R. A., Brewer, S. K., Jager, H. I., & Troia, M. J. (2016). Organizing Environmental Flow Frameworks to Meet Hydropower Mitigation Needs. Environmental management, 58(3), 365-385.
  • Brewer, S.K., McManamay, R.A., Miller, A.D. et al. Advancing environmental flow science: developing frameworks for altered landscapes and integrating efforts across disciplines. Environmental Management (2016) 58: 175-192. doi:10.1007/s00267-016-0703-5
  • Dyer, JJ, J Mouser, SK Brewer. 2016. Habitat Use and Growth of the Western Painted Crayfish Orconectes Palmeri Longimanus. Journal of Crustacean Biology DOI: 10.1163/1937240X-00002417.
  • Dyer, J.J., T.A. Worthington, and S.K. Brewer. 2015. Response of narrow-range crayfish to hyporheic water availability and excess sedimentation. Hydrobiologia
  • Brewer, SK and DJ Orth. 2015. Species conservation profile of the Smallmouth Bass Micropterus dolomieu. Pages 35-41 in Tringali, M. D., M. S. Allen, T. Birdsong, and J. M. Long, editors. Black Bass Diversity: Multidisciplinary Science for Conservation. Proceedings of the Symposium Black Bass Diversity: Multidisciplinary Science for Conservation. American Fisheries Society, Symposium 82, Bethesda, Maryland.
  • Brewer, S.K. and J.M. Long. 2015. Biology and ecology of genetically distinct Neosho and Ouachita smallmouth bass. Pages 281-296 in Tringali, M.D., J.M. Long, T.W. Birdsong, and M.S. Allen, editors. Black bass diversity: multidisciplinary science for conservation. American Fisheries Society, Symposium 82, Bethesda, Maryland. Abstract | 
  • Powers, J., S.K. Brewer, J.M. Long, and T. Campbell.2014. Evaluating the use of side-scan sonar for detecting freshwater mussel beds in turbid river environments. Hydrobiologia 743:127-137. DOI 10.1007/s10750-014-2017-z
  • Brewer, S.K. 2014. Smallmouth Bass. Kansas Fishes. University Press of Kansas
  • Rabeni, C. F. and S. K. Brewer. 2014. Linking successful careers to successful fisheries. Future of Fisheries: Perspectives for the Next Generation of Professionals. American Fisheries Society, Bethesda.

    Abstract | 
  • Brewer, SK and WC Musselman. 2014. Habitat use and movement by fishes using shallow-water habitats in three scenic rivers in Oklahoma. Final report to Oklahoma Department of Wildlife Conservation
  • Worthington, TA, SK Brewer, N Farless, TB Grabowski, and MS Gregory. 2014. Factors affecting the transport time of semibuoyant fish eggs in large, altered river systems. PLoS ONE 9(5): e96599. doi:10.1371/journal.pone.0096599
  • Davis, M. and S.K. Brewer. 2014.Gulf Coast Prairie Landscape Conservation Cooperative Regional Hypotheses of Ecological Responses to Flow Alteration. U.S. Department of Interior, Fish and Wildlife Service, Cooperator Science Series FWS/CSS-107-2014, Washington, D.C.
  • Brewer, S.K. and M.M. Davis. 2014. Preliminary testing of flow-ecology hypotheses developed for the GCP LCC Region. .S. Department of Interior, Fish and Wildlife Service, Cooperator Science Series FWS/CSS-108-2014, Washington, D.C.
  • Worthington, TA, SK Brewer, TB Grabowski, and J Mueller. 2014. Backcasting the decline of a vulnerable Great Plains reproductive ecotype: Identifying threats and conservation priorities. Global Change Biology 20:89-102. doi: 10.1111/gcb.12329
  • Williams, K. SK Brewer, and MR Ellersieck.2014. A comparison of two gears for quantifying abundance of lotic-dwelling crayfish. Journal of Crustacean Biology 35:54-60.
  • Mueller JS, Cheek BD, Chen Q, Groeschel J, Brewer SK, & Grabowski TB. 2013. A simple device for measuring the minimum current velocity to maintain semi-buoyant fish eggs in suspension. The Prairie Naturalist 45:84-89. Abstract |  Download  | 
  • Worthington, TA, SK Brewer and N Farless. 2013. Spatial and Temporal Variation in Efficiency of the Moore Egg Collector. North American Journal of Fisheries Management 33:1113-1118.
  • Brewer, S.K. 2013. Groundwater influences on the distribution and abundance of riverine smallmouth bass, Micropterus dolomieu, in pasture landscapes of the Midwestern United States. River Research and Applications 29: 269–278 Publisher Website | 
  • Brewer, S.K. 2013. Channel unit use by smallmouth bass: Do land-use constraints or quantity of habitat matter?
    North American Journal of Fisheries Management 33:351-358.
  • Dyer, J.J., S.K. Brewer, T.A. Worthington, and E.A. Bergey.2013. The influence of coarse-scale environmental features on current and future distributions of narrow-range endemic crayfish populations. Freshwater Biology doi:10.1111/fwb.12109
  • Brewer, SK, and TB Grabowski. 2013. Evaluating the reproductive success of Arkansas River shiner by assessing early life-history stage dispersal and survival at the landscape level. Final report to the U.S. Fish and Wildlife Service, Great Plains Landscape Conservation Cooperative (FWS agreement number F11AP00112)
  • Worthington, T.A., S.K. Brewer, T.B. Grabowski, and J. Mueller.2013. Evaluating the sampling efficiency of the Moore egg collector. North American Journal of Fisheries Management 33:79-88. Abstract |  Publisher Website | 
  • Rettig, A.V. and S.K. Brewer. 2012. Seasonal habitat shifts by benthic fishes in headwater streams. Proceedings, Southeastern Association of Fish and Wildlife Agencies 65:96-102.
  • Brewer, S.K. and C.F. Rabeni. 2011. Interactions between natural-occurring landscape conditions and land use influencing the abundance of riverine smallmouth bass, Micropterus dolomieu. Canadian Journal of Fisheries and Aquatic Sciences 68:1922-1933.
  • Brewer, S.K. and M.R. Ellersieck. 2011. Evaluating two observational sampling techniques for determining the distribution and detection probability of age-0 smallmouth bass in clear, warmwater streams. North American Journal of Fisheries Management 31: 894-904.
  • Brewer, S.K. 2011. Patterns of young-of-year smallmouth bass microhabitat use in multiple stream segments with contrasting land uses. Fisheries Management and Ecology 18:506-512. Publisher Website | 
  • Musselman, W.C. and S.K. Brewer. 2009. Winter habitat use by organgethroat darter, Etheostoma spectabile, at multiple spatial scales: Journal of Freshwater Ecology, 24:77-83.
  • Brewer, S. K., Charles F. Rabeni, and Robert J. DiStefano. 2009. The influence of age-specific habitat selection by a stream crayfish community (Orconectes spp) on secondary production. Hydrobiologia 619: 1-10
  • Brewer, S. K., and C. F. Rabeni. 2008. Seasonal and diel habitat shifts by juvenile ictalurids in a flow-regulated prairie river. The American Midland Naturalist. 194:42-54
  • Brewer, S. K., C. F. Rabeni, and D. Papoulias. 2008. Comparing histology and gonadosomatic index for determining spawning condition of small-bodied riverine fishes. Ecology of Freshwater Fishes 17:54-58.
  • Brewer, S. K., C. F. Rabeni, S. P Sowa and G. Annis. 2007. Natural-occurring landscape and in-channel factors affecting the distribution and relative abundance of riverine smallmouth bass in Missouri. North American Journal of Fisheries Management. 27:326-341.
  • Brewer, S. K. D. Papoulias, and C. F. Rabeni. 2006. Spawning habitat associations and selection by fishes in a flow-regulated prairie river. Transactions of the American Fisheries Society. 135:763-778.
  • Brewer, S. K., C. F. Rabeni and D. C. Heimann. 2005. The importance of day versus night fish sampling for instream-flow determinations. Proceedings, Southeastern Association of Fish and Wildlife Agencies.

Current Staff

Federal Staff: 2

Masters Students: 10

Phd Students: 3

Post Docs: 2

University Staff: 7

5 Year Summary

Students graduated: 26

Scientific Publications: 90

Presentations: 174


Contact Us

Oklahoma Cooperative Fish and Wildlife Research Unit Stillwater, OK 74078-3051 Phone: (405) 744 - 6342 Fax: (405) 744 - 5006 Our University Web Site

Unit Leader

Shannon Brewer
Dr. Shannon Brewer with a stringer of trophy bluegills.

Shannon is a research fisheries biologist and assistant unit leader of the Oklahoma Cooperative Fish and Wildlife Research Unit and an assistant professor in the Department of Natural Resources Ecology and Management at Oklahoma State University


  1. 2008-2009 Biennial Report
  2. 2010-2011 Biennial Report
  3. 2012-2013 Biennial Report
  4. 2014-2016 Triennial Report

Oklahoma Cooperative Fish and Wildlife Research Unit Cooperators

  1. Oklahoma Department of Wildlife Conservation
  2. Oklahoma State University
  3. U.S. Fish and Wildlife Service
  4. U.S. Geological Survey
  5. Wildlife Management Institute