Close The mechanism by which a natural ecosystem becomes incapable of sustaining its native species is known as habitat degradation (also known as habitat loss or habitat reduction). Organisms used to live on the site are replaced or die, resulting in a decrease in biodiversity and species richness. (Photo : Steve Maslowski, USFW on Wikimedia Commons) Bobolink (Photo : UAF photo by Todd Paris) Peaks of the southern Brooks Range along a stretch of the Dalton Highway, about 250 miles north of Fairbanks. Employees from the GRCA will be on-site for the entire four-year construction period, docume...