After a decade of habitat improvements spurred by a 2007 NOAA Fisheries recovery plan, upper Columbia River spring chinook salmon still remain a population at a high risk of extinction and a panel of scientists wanted to know why.
After a decade of habitat improvements spurred by a 2007 NOAA Fisheries recovery plan, upper Columbia River spring chinook salmon still remain a population at a high risk of extinction and a panel of scientists wanted to know why.