Salmon didn’t budge after experiment on Butte Creek

Chico ERBy Heather HackingJuly 13, 2012 A few dozen salmon parked low in the waters of Butte Creek didn't budge last week when offered a pulse of water from higher upstream. The fish will probably die before spawning, but an attempt was made last week to move them along by sending a pulse of extra water July 5 and 6. The experiment took place from 7 p.m. to 7 a.m., when fish tend to migrate. Read More…

Tagged Spring Chinook Being Tracked In Upper Deschutes Rivers; First…

Columbia Basin BulletinJuly 13, 2012 A total of 15 spring chinook have been trapped this year and transported around the Pelton Round Butte hydro project for release into Lake Billy Chinook to become the first of the species to ply the central Oregon waters of the Crooked, Metolius and upper Deschutes rivers in 50 years. On Wednesday, they were joined by the first sockeye to knock on the door Read More…

Crews chip away at Condit Dam

The ColumbianBy Eric FloripJuly 11, 2012 The numbers are impressive: 500 cubic yards of concrete hauled out each day. Six days per week. Workers at it 12 hours a day. As the dismantling of Condit Dam continues, piece by piece, crews have picked up speed since the removal process began in earnest earlier this year. They'll have to keep it up if they hope to have it gone by an Aug. 31 target Read More…

Two West Coast Fish Stocks Overfished, 171 Harvested At Sustainable…

Columbia Basin BulletinJuly 13, 2012 According to a feature article posted by NOAA Fisheries on its Northwest Fisheries Science Center web site, only two of the 173 West Coast fish stocks -- Pacific bigeye tuna and Pacific bluefin tuna -- are now subject to overfishing, meaning that 171 stocks currently are harvested at a sustainable rate. However, five stocks are classified as overfished, Read More…

Researchers Find Evidence of Genetic Change in Salmon in Response to…

Environmental ProtectionJuly 13, 2012 Because the gradual increase in temperatures worldwide is still relatively new, researchers have had difficulty in finding examples of genetic changes in organisms that are adapting to the warmer temperatures. Instead they have seen examples of phenotypic plasticity, which is where animals make adaptive changes based on existing conditions that are not Read More…

Bad News for Big Brains

Science NowBy Elizabeth PennisiJuly 10, 2012 With big brains comes big intelligence, or so the hypothesis goes. But there may be trade-offs as well. Humans and other creatures with large brains relative to their body size tend to have smaller guts and possibly fewer offspring. Scientists have debated for decades whether the two phenomena are related. Now a team of researchers says that they Read More…

Commercial Salmon Fishermen on Strike

PatchBy Beatrice KarnesJuly 11, 2012 Commercial fisherman Bill Webb is selling fresh-caught wild King Salmon off his fishing boat at Pillar Point Harbor in Half Moon Bay for $8 per pound. When the fish on ice are gone, Webb says there won't be any more for awhile. Webb and his fellow fishermen held a meeting Tuesday and voted to strike, leaving most of the fleet docked Wednesday. "There are a Read More…

Southern bluefin tuna the perfect catch for NSW towns between Sydney…

The AustralianBy Malcolm HollandJuly 11, 2012 Southern bluefin tuna are proving a cold season tourism boom between Sydney and Eden, yet a few years ago virtually no bluefin were caught by recreational fishers off NSW. A NSW Fisheries Scientific Committee report which surveyed 11,000 recreational fishing boats returning to their boat ramps for two years between 1993 and 1995 recorded just one Read More…

Copper in water makes salmon vulnerable

United Press InternationalJuly 10, 2012 Copper pollution in water can affect salmon, interfering with their sense of smell that normally warns of a predator's presence, a U.S. researcher says. Jenifer McIntyre at Washington State University found tiny amounts of copper from brake linings and mining operations finding its way into waterways affects the fishes' sense of smell so much they can't Read More…

A New Way to Track Fish

New York TimesBy Kelly SlivkaJuly 10, 2012 Researchers have trouble tracking any animal in the ocean, but some are harder to track than others. The tags must be able to send a message back to a receiver telling it: “I’m here! I’m here!” Tracking a marine mammal (a seal, for example) by tagging it works well because it breathes air. The animal must come to the surface of the ocean, Read More…