EventA NOAA Fisheries and University of Alaska Fairbanks study links the 2016‑2020 Bering Sea marine heat wave to a dramatic rise in post‑juvenile Chinook salmon deaths, before they could return to spawn, causing Yukon River runs to hit record lows in 2022. The decline was driven by poor juvenile recruitment and elevated marine mortality, not harvest or bycatch.
NOAA–UAF researchers link the 2016‑2020 Bering Sea heat wave to a sharp increase in post‑juvenile Chinook mortality, triggering the latest collapse of Yukon River salmon runs.
A new study links the 2016‑17 Bering Sea heat wave to a sharp drop in Yukon River Chinook salmon, showing that extreme ocean temperatures increased adult mortality before they could return to spawn.
A new NOAA Fisheries study finds that the 2016‑2020 Bering Sea marine heatwave caused higher death rates in older juvenile and adult chinook salmon returning from the ocean, contributing to a sharp decline of Yukon River runs.
A NOAA Fisheries and University of Alaska Fairbanks study links the 2016‑2020 Bering Sea marine heatwave to a sharp rise in post‑juvenile mortality of Yukon River Chinook salmon, causing their stocks to plummet. The findings warn that ongoing warming could further erode salmon populations critical to regional fisheries and ecosystems.
