A two-year international project that aims to track scores of wild Atlantic salmon has been launched in the highlands of Scotland as part of the largest effort in Europe to date to halt the decline of the species.

The Missing Salmon Project hopes to discover why the wild salmon population has decreased by 70 percent in the last 25 years, with the organization behind the project, the Atlantic Salmon Trust (AST), saying the analysis is “essential” if effective measures are to…