A "progressive intensification" of unfriendly ocean conditions
during the 1990s is more to blame for vanishing salmon and steelhead stocks
than all the harvest, habitat, hydroelectric and hatchery impacts combined,
according to a Canadian researcher.
"We have gone from having an El Nino every five to seven years,"
to having one nearly every year, said scientist David Welch of Canada’s
Department of Oceans and Fisheries Pacific Biological Station at …