Nathan R. Hartline

Effect of Temperature on Respiratory Responses to Increasing Hypoxia for Five Species of Nongame Stream Fishes

SEAFWA Journal Volume 7, March 2020

Understanding the ability of fishes to tolerate low dissolved oxygen (DO) is important not only to our understanding of the ecology of aquatic systems, but also for flow management in regulated lotic systems. Historical flow management guidelines have been based on critical oxygen concen- trations and incipient lethal levels from just a few species, and data on nongame fish species are lacking. Here we quantify respiration rate, critical DO concentration at routine metabolic rate, and regulatory capacity across temperatures for five nongame fish species. Oxygen consumption patterns rep-...