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

Texas Project

TCU 438: Evaluating resilience and vulnerability of fish assemblage structure to intermittent flow

February 2022 - August 2024


Participating Agencies

  • Texas Parks and Wildlife Department

Growing human populations, irrigation water demands, and plans to increase water storage capacity intensify the need to understand how fish respond to drought to establish realistic targets for managing populations and at-risk species. This project proposes to address species resilience and vulnerability to drying events to provide fish-habitat association and distribution data that could be used to inform Native Fish Conservation Area planning and instream flow recommendations in the middle Colorado River basin. Information on species responses with respect to the severity and extent (spatial and temporal) of drying will provide evidence-based inferences about how projected increases in climate- or anthropogenically-driven intermittence may influence recruitment dynamics and fish assemblage structure, including fish species of greatest conservation need.

Presentations Presentation Date
Sáenz, G.P., W.M. Wilson, and J.S. Rogosch. 2024. Gut content composition analysis of four native fishes of the Red River. American Fisheries Society Annual Meeting, Honolulu, HI. Sep 15-19, 2024 September 2024
Hanson, C.R., J.S. Rogosch, N. Smith, and C. Roberston. 2024. Investigating the effectiveness of Stream Temperature, Intermittency, and Conductivity loggers to quantify river connectivity. Texas Chapter of the American Fisheries Society. Nacogdoches, TX. February 22-24, 2024. February 2024
Hanson, C.R., J.S. Rogosch, N. Smith, and C. Roberston. 2024. Evaluating the effects of intermittent flow on the resilience and vulnerability of fish assemblage structure. American Fisheries Society Annual Meeting. Honolulu, HI. Sep 15-19, 2024. September 2024