Researcher links salmon sex to geological change

Phys Org – It turns out that sex can move mountains. A Washington State University researcher has found that the mating habits of salmon can alter the profile of stream beds, affecting the evolution of an entire watershed. His study is one of the first to quantitatively show that salmon can influence the shape of the land. Alex Fremier, lead author of the study and associate professor Read More…

‘If it’s going to kill us, OK, we’ll die’: Villagers stand…

Mongabay – Cambodia’s largest hydropower project, the Lower Sesan 2 dam, was officially launched late last month. Experts fear the dam will lead to a 9.3 percent loss of fish throughout the entire Lower Mekong River Basin, a concern Prime Minister Hun Sen has brushed aside. Thousands of people have already been relocated to make way for the dam, but around 100 families intend to stay Read More…

Phages an effective alternative to the use of antibiotics in…

Phys Org – Researchers from AZTI, Biopolis S.L. (Spain), University of Aveiro (Portugal) and the Aguacircia Aquaculture company (Portugal) have evaluated the impact of the use of bacteriophages that fight the pathogens responsible for diseases that affect species bred in fish farms. Replacing antibiotics with phages is a highly promising option in aquaculture to control the transfer of Read More…

Electrofishing used to monitor Central Oregon fisheries

KTVZ News – Electrofishing is not your typical rod-and-reel type of fishing. It's a way for conservationists to study fish in waterways across Central Oregon. On Tuesday, Portland General Electric workers were on a stretch of the Ochoco Creek in Prineville, stunning fish with an electric current, so they could pull them out and count them. The electric current allows for the Read More…

Developing Tiered Environmental Flow Criteria Using a Functional…

Maven's Notebook – Establishing environmental flow targets to protect aquatic communities is a priority for numerous programs in California including in the Delta. In this first of three brown bag seminars focusing on flow targets and ecology, Dr. Yarnell discusses her recent work using a functional-flows approach to develop statewide environmental flow recommendations. The approach allows Read More…

Climate change ‘harming fish stocks’

Fish Update – Climate change is impacting on the global distribution of fish stocks, Iceland’s fisheries minister has told an international conference on the state of the world’s seas and oceans. Þorgerður Katrín Gunnarsdóttir (pictured) was addressing  the Our Oceans summit in Malta where the guest speakers included Prince Charles. She said only  responsible, robust and Read More…

Rising Seas: What you need to know about the danger lapping at…

Cal Matters – As glaciers melt and oceans warm, experts say the Pacific waters surrounding California are now  rising 30 to 40 times faster than in the last century. The surge—driven by global climate change—will gobble up beachfront and overwhelm coastal cities. A recent U.S. Geological Survey report estimated that up to two-thirds of Southern California beaches could vanish within Read More…

Feds: Popular Species of New England Flounder Is Overfished

U.S. News & World Report – Federal ocean managers say a popular species of New England food fish is overfished, and conservation measures are needed to rebuild its population. The National Marine Fisheries Service says the Northwestern Atlantic witch flounder stock is overfished, and the status of whether overfishing is still occurring is unknown. Witch flounder are Read More…

Santa Clara Valley Water District rejects Jerry Brown’s twin Delta…

The Mercury News – In a landmark vote closely watched across California, Silicon Valley’s largest water agency on Tuesday rejected Gov. Jerry Brown’s $17 billion plan to build two giant tunnels under the Sacramento-San Joaquin River Delta. By a vote of 7-0, the Santa Clara Valley Water District’s board of directors chose instead to adopt a set of principles endorsing a significantly Read More…

Brown administration says it’s willing to consider one-tunnel…

Sacramento Bee – Silicon Valley’s water district Wednesday rejected Gov. Jerry Brown’s plan to build twin tunnels beneath the Sacramento-San Joaquin Delta but said it would support a smaller, less expensive project. A top state official said the Brown administration is willing to consider such an approach. The Santa Clara Valley Water District’s board voted 7-0 to give the Delta Read More…