Making way for steelhead: Removal of obsolete Idaho dam reopens prime…

NOAA NewsDutch Flat Dam, a 10-foot barrier built nearly a century ago to provide drinking water to Troy, Idaho, was once as forgotten as the steelhead run that it blocked. The dam spanned the West Fork of Little Bear Creek, which ran so dry in summer nobody thought steelhead survived there. So no one thought much about the dam that had silted in long ago.But about a decade ago biologists realized Read More…

Historic amount of Chinook return to Columbia, Snake Rivers

KTVBFall Chinook salmon are making their way back into the Columbia River this year and crossing Bonneville Dam with more fish than the dam has seen since it was completed back in 1938.According to the Northwest Power Conservation Council, the count of adult and jack fall Chinook is already more than 920,000 fish, and there is still about a month left in the run.Now the run is expected to have Read More…

Coho, or silvers, making for a strong salmon run in Puget Sound

The Seattle TimesRight now the waters from the Strait of Juan de Fuca clear into Puget Sound are shimmering in silver.That mint bright color comes in the shape of about 880,000 coho salmon, better known as “silvers,” that are now migrating not only in marine areas but clear up into many local river systems.At Sekiu in the western Strait, many anglers have been scoring limits of two coho Read More…

Non-native species pose threat

Viet Nam NetExperts have urged Viet Nam to beef up administrative efforts to manage over 90 non-native species posing threats to the national ecosystem and biodiversity.Attending a recent meeting hosted by the Ministry of Natural Resources and Environment's Viet Nam Environment Administration, participants urged the ministry to curb the number of alien species entering the country.Mai Hong Quan Read More…

Chronic stress conditions salmon behaviour

FISHave you ever been stressed and forgot what you were doing? Chronic mild stress may explain why many salmon don't return to our rivers and why 20 per cent of salmon production is lost every year.Chronic mild stressors, such as a bad working environment, marital problems or sleepless nights with small children, are well known to cause learning and memory problems.Researchers at Uni Research AS Read More…

Taking over the oceans: Adult fish characteristics predict a…

Phys OrgAs fish disperse to find new habitats, scientists have developed a new model to judge a species' success in colonising new places. The study has shown some surprising results, suggesting that success can best be determined in the traits of adult individuals, and not in a species' larval stages, as previously thought."The more places a tropical fish species lives," says lead author Osmar Read More…

University of Toronto prize-winning technology reduces marine…

Phys OrgA University of Toronto (U of T) technology that provides a cost-effective and environmentally sound solution to the fishing industry's multi-billion-dollar bio-fouling problem has been recognized with a Clean50 Award.Bio-fouling is the accumulation of microorganisms, plants, algae and animals on wetted surfaces, and it is a big problem for the fast-growing aquaculture or fish-farming Read More…

Fisheries waste ‘costs billions’

BBC NewsThe world's fishing fleets are losing billions of dollars each year through depleted stocks and poor management, according to a UN report.The World Bank and the UN Food and Agriculture Organization (FAO) calculate the losses at $50bn per year.Half the world's fishing fleet could be scrapped with no change in catch.The report was launched at World Bank headquarters in New York and has been Read More…

9th Circuit revisits sea lion ‘kill list’

Courthouse NewsAnimal-rights groups urged the 9th Circuit on Friday to halt a plan to trap and kill California sea lions that feed on protected fish species near the Bonneville Dam, asking the court, "When does it end? When does the killing stop?"Ralph Henry, a lawyer with the Humane Society of the United States, said the National Marine Fisheries Service (NMFS) had invoked a "narrow exception to Read More…

Central Valley awash in water worries

The Fresno BeeThe state has not declared a drought after two dry winters, but farmers and city leaders in the central San Joaquin Valley don't need an official pronouncement.Everyone looks at the bottom line in the Valley — the groundwater. Big withdrawals have been made this summer from the already sinking underground water table in the Valley.If this winter is as dry as the previous two, the Read More…