Posted on September 30, 2012 by Bob Berwyn
Fisheries in Alaska, Gulf of Mexico and New England all hit hard
Shrimp boats in the Gulf of Mexico. Photo by Bob Berwyn.
By Summit Voice
SUMMIT COUNTY — If you had any doubts that at least some — if not all — the world’s oceans are in trouble, then look no farther than the most recent fisheries disaster declarations from the U.S. Commerce Department.
Due to varying factors, including overfishing, Mississippi River flooding and “unfavorable ocean conditions” (global warming, anyone?), the department has made disaster determinations in the Northeast, Alaska and Mississippi.
Along the Northeast coast of the U.S., ocean temperatures reached record high levels this past summer, shifting fish stocks away from U.S. waters. According to the disaster declaration, several key fish stocks in the groundfish fishery are not rebuilding and further cuts are expected in 2013. (more…)
Filed under: biodiversity, climate and weather, Environment, global warming | Tagged: Alaska, climate change, fisheries disasters, groundfish, Mississippe flooding, oceans, overfishing, salmon | 2 Comments »
Posted on February 11, 2012 by Bob Berwyn
Pacific salmon species.
Conservation groups seek investigation of Canadian aquaculture practices
By Summit Voice
SUMMIT COUNTY — Diseases and parasites from industrial fish farms in British Columbia are threatening wild salmon in the Pacific Northwest, according to conservation, fishing and native groups in Canada and the United States.
A coalition of groups this week filed a formal petition today requesting an international investigation with the Commission for Environmental Cooperation under the North American Agreement on Environmental Cooperation — an environmental side agreement to the North American Free Trade Agreement. The petition seeks enforcement of Canada’s Fisheries Act. (more…)
Filed under: biodiversity, endangered species, Environment, Summit County news | Tagged: aquaculture, Center for Biological Diversity, Commission for Environmental Cooperation, fish farm disease, North American Free Trade Agreement, salmon | 3 Comments »
Posted on December 20, 2011 by Bob Berwyn
Researchers stunned by rapid genetic change in hatchery raised salmon
SUMMIT COUNTY — Salmon raised in hatcheries may never be able to help replenish wild populations because the traits that enable them to survive in captivity come at the expense of heir ability to thrive and reproduce in a wild environment.
The impact of the hatchery environment is so profound that distinct genetic changes were apparent in just a few generations of fish, showing a speed of evolution and natural selection that surprised researchers. (more…)
Filed under: biodiversity, endangered species, Environment, Summit County news | Tagged: endangered species act, Environment, genetics, Oregon State University, salmon, Summit County News | 1 Comment »
Posted on November 22, 2011 by Bob Berwyn
Atlantic salmon. Photo: Hans-Petter Fjeld (CC-BY-SA)
Increased sea-surface temperatures, shifting wind patterns and increased predation cited as factors in falling populations
By Summit Voice
SUMMIT COUNTY — Salmon spawning in the rivers of Maine — the last strongholds for Atlantic salmon in New England — are facing new climate-related challenges.
Changing spring wind patterns, warming sea surface temperatures and new predators along altered migration routes are affecting their survival, according to a new paper published online in the journal Fisheries Management and Ecology.
“Shifting environmental conditions affect both the freshwater and marine habitats for Atlantic salmon, and are already a concern for salmon stocks at the southern end of their distribution range in both North America and Europe, said Kevin Friedland, one of the paper’s co-authors and a researcher at the Narragansett Laboratory of NOAA’s Northeast Fisheries Science Center, and is a member of the Center’s Ecosystems Assessment Program.
“Understanding the linkages between post-smolt survival and climate, especially ocean conditions, is critical and needs to be considered in the scientific basis for conservation planning and management actions,” Friedland said. (more…)
Filed under: biodiversity, climate and weather, endangered species, Environment, global warming, Summit County news | Tagged: Atlantic salmon, climate change, Environment, Fisheries Management, global warming, Gulf of Maine, salmon, Summit County News | 1 Comment »