Project Grant F23AP01354

Award Date 8/1/23
Completion Date 12/15/25
Dollars Obligated $19K
Federal Grant Program
15.660
Assistance Type
Project Grant
Place of Performance
Arkansas, USA
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SEVERAL RIVERS IN THE RED RIVER BASIN IN ARKANSAS (COSSATOT, SALINE, AND LITTLE RIVERS) WERE IDENTIFIED AS HIGH PRIORITY FOR MONITORING WATER TEMPERATURE, A CRUCIAL VARIABLE KNOWN TO INFLUENCE ECOLOGY OF AQUATIC SPECIES AND ECOSYSTEM PROCESSES, AND AT LEAST ONE RIVER (COSSATOT) IS KNOWN TO BE EXPERIENCING WATER TEMPERATURES EXCEEDING THE STANDARD SET BY THE ENVIRONMENTAL PROTECTION AGENCY. ROCKY SHINER (NOTROPIS SUTTKUSI), AN ENDEMIC TO THE RED RIVER DRAINAGE, WAS PETITIONED FOR LISTING IN 2010, BUT DATA GAPS EXIST ON POTENTIAL THREATS TO THE SPECIES. ROCKY SHINER IS KNOWN TO SEEK THERMAL REFUGIA DURING SUMMER MONTHS IN DEEP POOLS, INDICATING IT MAY BE SUSCEPTIBLE TO RISING TEMPERATURES (PRATT 2000). HOWEVER, NO DATA ARE AVAILABLE ON THERMAL TOLERANCE FOR THIS SPECIES. TO ADDRESS CONCERNS RELATED TO WATER TEMPERATURE AND FISH PHYSIOLOGY, WE WILL QUANTIFY CRITICAL THERMAL MAXIMUM FOR THE ROCKY SHINER AND INCLUDE ADDITIONAL TAXA THAT ARE MORE WIDESPREAD AND TAXONOMICALLY RELATED.

Posted 6/6/23, 12:00 AM