Author: Dr. Jessica Nelson

In the peaceful streams that wind across the landscapes of the United States, from the lush banks of Massachusetts to the vast forests of the Yukon, a quiet change is taking place, something that may unravel the intricate tapestry of aquatic life. This change, observed in the shrinking size of fish such as American brook trout and Yukon chinooks, has puzzled scientists and conservationists. For years, the prevailing explanation rested on the theory of Gill Oxygen Limitation (GOL), which proposed that as waters warm due to climate change, fish struggle to obtain enough oxygen through their gills. gills to support…