Salmon Fisher (IMAGE) University of California - Santa Cruz Caption Salmon fishing on the Yukon River in Alaska has been affected dramatically by declines in the size of Chinook salmon. Subsistence fishers, including Alaskan Native communities, are heavily reliant on salmon for their food security. Credit Peter Westley Usage Restrictions For use only with news coverage of this research License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.