Coho Salmon Prespawn Mortality Linked to Crumb Rubber Fields

Mar 24, 2026 https://www.nwsportsmanmag.com

Researchers have discovered a new source of pollution killing coho salmon, with crumb rubber fields leaching toxic chemicals into nearby waters. The study found that water collected from one field had concentrations of 6PPD-quinone exceeding levels lethal to juvenile coho salmon. This new information adds to the growing concern about the impact of human activities on salmon populations.