The U.S. Geological Survey is offering a cooperative agreement opportunity for partners affiliated with the Great Lakes-Northern Forest Cooperative Ecosystem Studies Unit (CESU) to conduct research on the population dynamics of warmwater fishes in relation to thermal and flow regimes. The project aims to develop population models for species such as walleye, smallmouth bass, and green sunfish, assessing how changes in hydrology and water temperature may influence their invasion into new river segments in the Colorado River basin. This research is critical for understanding ecological impacts and managing fish populations effectively. Interested CESU partners can apply for funding ranging from $200,000 to $450,000, with applications due by 5:00 p.m. ET on March 27, 2024. For further inquiries, contact Faith Graves at fgraves@usgs.gov.