April 8, 2026 — For thousands of years, salmon have sustained communities along Alaska’s Yukon River, not only as a food source, but also as a cornerstone of culture and tradition. Today, however, those salmon populations are declining, and researchers are examining if current policies that are meant to protect them are working as intended, for both the ecosystems and the people who depend on them.
A new study from Carnegie Mellon’s Department of Engineering and Public Policy evaluated how well the Alaska Department of Fish and Game (ADF&G) follows policies designed to promote both ecological and social sustainability in its management of salmon fisheries. By combining historical data analysis and interviews with traditional subsistence users, the team assessed if management decisions align with legal mandates and whether those decisions actually produce sustainable outcomes.
Fisheries are often described as social-ecological systems, meaning environmental conditions and human well-being are closely linked, and in the Yukon River region, that connection is especially strong. Salmon have supported Alaska Native communities for at least 11,500 years, yet populations have experienced decades of decline attributed to pressures like warming oceans, changing river conditions, and harvest impacts across multiple regions and jurisdictions.
“Traditional users of the Yukon River have engaged in reciprocal relationships with salmon since time immemorial,” said Sabrina Curtis, Ph.D. student studying engineering and public policy and lead author of the paper. “But today, they need help to balance systems of management with globalization, industry, and culture.”