Cod Recovering Rapidly in Canada’s Waters, Slower off U.S.
Cod rebound in warming Canadian waters but continue to decline in U.S.
The rebound of Atlantic cod off Newfoundland and Labrador contrasts with their rapidly declining populations off the northeastern coast of the United States, where until last year the stocks remained significantly below sustainable levels.
The first clue came in 2008, recalled George Rose, a marine biologist at Memorial University of Newfoundland, when he saw the cod aggregating in large numbers offshore during the spawning season. It was a sight he had sorely missed in 15 years. In the early 1990s, cod fisheries suffered such a dramatic collapse that they emerged as an aquatic poster child for fisheries mismanagement, according to Rose.
In a paper published yesterday in the Canadian Journal of Fisheries and Aquatic Sciences, Rose and his colleague, Sherrylynn Rowe, document the comeback of the Atlantic cod off Newfoundland and Labrador over the past decade. The fact that they have shown that the cod stock there is on the way to recovery is good news, Rose said, as “it shows that it is not all gloom and doom.” Read more
The Department of Natural Resources has been working hard this fall, and will continue to this winter, to gather necessary eggs to maintain the production of hatchery fish to support management objectives for Michigan’s world-class fisheries. Fall egg-takes have been completed or soon will start for wild Chinook and coho salmon and for captive broodstocks of brown, rainbow, brook and lake trout.
The technique, called “toe wood,” has been around for about a decade but hasn’t been used much in Michigan until now. Department of Natural Resources fisheries biologist Chris Freiburger learned of the technique and thought it had applications for some of the issues facing Michigan streams.
The public again this year is invited to purchase surplus salmon that has been harvested at Michigan Department of Natural Resources weirs around the state.