The number of Atlantic salmon returning to Canadian rivers this year has slumped by as much as 60%. Returns have typically decreased from 2011 by 25-30%, with some rivers like Harry’s in Newfoundland down by as much as 50% and Sandhill River in Labrador plunging 60%. Overall, the larger salmon that return from the Greenland feeding grounds are down, but not extremely so. However, grilse have decreased in all regions. There are too many variables for scientists to determine yet why their numbers have declined so precipitously. Full story here.