Groundwater contamination widespread

The Press-EnterpriseMarch 15, 2013Chemicals from California’s long history of industrial and agricultural development have made their way into groundwater, particularly in the Inland region, which logs some of the worst contamination in the state, according to a recent government report.Toxic substances such as nitrate from fertilizer and perchlorate from military and manufacturing operations Read More…

Overfishing big fish changes DNA in fish stocks

FISMarch 19, 2013Scientists at Bangor University have presented new evidence showing how overfishing of larger fish in a stock alters the gene pool by favouring smaller, less fertile fish. The scientists warn that this must be taken into consideration by fisheries and conservation managers.Fishers have known for the past 100 years that fish are shrinking and scientists have seen them grow more Read More…

A cool new way climate change is killing bivalves

GristMarch 18, 2013We already know that carbon-dioxide-filled, acidic ocean water is no-good, very-bad news for mussels and other underwater shelled creatures, causing their shells to dissolve. But, as these things so often go, it turns out that climate change is even worse for bivalves than we thought: It’s unleashing an awkward kind of anti-puberty on them. They’re growing smaller and Read More…

The future of fish farming and marine fisheries for a growing…

The Fish SiteMarch 18, 2013As the world’s population heads towards the 9.3 billion mark, predicted for 2050, the demand for fish products is also expected to grow. However, there are questions about the ability of marine fisheries and aquaculture to match increasing consumption rates. Aquaculture is currently growing at a faster rate than population growth, with total fish production (from Read More…

20-mile-long smelt run moving up Columbia River

The OregonianMarch 18, 2013A mass of smelt at least 20 miles long is moving up the Columbia River, attracting thousands of birds and hundreds of sea lions and seals.Though the birds and marine mammals are feasting on the little fish, dipping by people is likely years away as researchers work on a plan to get smelt off the endangered species list.Read Read More…

Water weed spraying in Delta starts

The Sacramento BeeMarch 18, 2013Herbicide spraying began Monday in the Sacramento-San Joaquin Delta to control water hyacinth, an invasive water weed that has exploded in the region over the past nine months.The California Department of Boating and Waterways began the spraying program in a zone extending east and south of Medford Island, and also along the San Joaquin River as far downstream as Read More…

Sea lions vs. salmon: Annual clash resumes at Bonneville Dam

NPRMarch 18, 2013It happens every spring. Hungry sea lions follow endangered salmon runs up the Columbia River and feast on them at the bottom of the Bonneville Dam. If they’re caught, they can be killed by state workers. A campaign to stop the killing is becoming an annual tradition as well.This year, for the second year running, international activists from the Sea Shepherd Conservation Read More…

River debate swiftly flowing

The Stockton RecordMarch 18, 2013There's a reason the San Joaquin River has been labeled one of the hardest-working streams in the country. Most of its flow is diverted to cities and farms before it ever reaches Stockton.State officials are poised to address that for the first time in almost two decades, but their proposal to increase flows from less than 30 percent to 35 percent is under attack Read More…

Fish cannot smell in polluted waters

Scientific AmericanMarch 18, 2013Fish in lakes tainted with metals are losing their sense of smell, stoking concern among experts that the problem could devastate populations.But if the fish can just get into cleaner water – even if they’ve been exposed to pollutants their whole life – they start sniffing things properly again, according to new research out of Canada.Read Read More…