http://www.newsreview.com/chico/Content?oid=632086Why the salmon are dying
This article was published on 03.06.08.
Last fall, scientists were puzzled and worried when they realized that the number of coho and chinook salmon returning to West Coast rivers like the Sacramento were lower than they’d been in 37 years—only one-third of what scientists expected. What could be causing such a drastic collapse?
Today they have a pretty good idea. Early this week, fisheries biologists at the National Oceanic and Atmospheric Administration said their examination of the decline points to unusual changes in weather patterns that in 2005 forestalled a phenomenon called upwelling.
Ordinarily, upwelling stirs the water in the California Current, which flows along the coast from north to south, kick-starting the ocean food web by fostering phytoplankton growth. Without phytoplankton, the web dies. Juvenile salmon entering the ocean that year starved to death, as did millions of seabirds.
It’s not a permanent situation, the NOAA reports; this year, for the first time since 2005, the food web should be very good. In the meantime, though, salmon stocks are extremely low, and the federal Pacific Fishery Management Council is meeting next week to consider whether to close offshore salmon fishing in 2008, a decision that would have disastrous impacts on coastal communities.
We can expect to see more such catastrophes, according to a new study by a team of American, British and Canadian researchers who, sponsored by the National Science Foundation, mapped the impacts of human activity on all of the world’s oceans.
Every square mile of ocean is being affected, even isolated regions, the study notes, and many areas near heavily populated coastlines are nearing collapse. Overfishing, nutrient runoff and, especially, rising water temperatures because of global warming are the biggest culprits.
some local history on salmon issues along with an activist/friend's website (with pics/video of last fall's salmon run)
http://www.buttecreek.org/Butte Creek Spring Run Salmon
Butte Creek has the largest run of Wild Spring Run Chinook Salmon in California. Over $30,000,000 has been spent on improved fish passage. Much of the best salmon habitat still has reduced flows (less than 50%of normal flow) and increased water temperature due to hydroelectric diversions and as a result massive pre-spawn die-offs have occurred in recent years. However, by all measuresButte Creek spring run have recovered. Butte Creek has averaged over 9,000 salmon per year for the last twelve years (see Spring Run Populations), 3,000 more than the estimated capacity, and tagged stray Butte Creek Spring Run have shown up in Battle Creek, Clear Creek, and the Feather River Hatchery. Steelhead trout are making a comeback also although information is sketchy. (see fish report) Other forest and aquatic creatures have also benefited including Bald Eagles like the one in the photo, seen last May.
Butte Creek Salmon Cam
http://www.dissidentvoice.org/Articles8/Bacher_Butte-Disaster.htmFederal Government Intervenes in Butte Creek Salmon Disaster
by Dan Bacher
Dissident Voice
October 7, 2003
The worst ever die off of threatened spring-run chinooks on Butte Creek has prompted a federal government agency, NOAA Fisheries, to press for a series of actions to stop this from happening again in 2004. Unfortunately, the government intervention was taken too late for this year’s run.
The banks of Butte Creek, the most vibrant remaining spring chinook fishery in California, have been littered since July with thousands of carcasses of salmon that died before they were able to spawn. In a beautiful canyon where anglers and environmentalists should be celebrating the return of a huge run, the survivors of the fish kill are now spawning.
In a disaster much worse than even the Klamath fish kill of 2002, the federal government, fishery activists and DFG agree that the majority of wild spring-run chinooks perished before spawning, although they disagree on the exact numbers. The fish died from the same two diseases - Columnaris (bacterial gill disease) and Ich - that killed spring chinooks on Butte Creek and fall chinooks on the Klamath River last year.
Michael E. Aceituno, Supervisor of Sacramento Area Office of NOAA Fisheries, estimated the pre-spawning mortality to be “80 to 90 percent of the adult escapement” in a letter to Magalie R. Salas, Office of the Secretary, Federal Energy Regulatory Commission.
Emphasizing the seriousness of the situation, Aceituno said, “The final pre-spawning mortality estimate is likely to represent a significant proportion of the entire population of the Central Valley spring-run Chinook Salmon Evolutionarily Significant Unit (ESU).”
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http://www.newsreview.com/chico/Content?oid=558734Targeting a billionaire's dams
An unlikely coalition wants Warren Buffett to restore the Klamath River's salmon fishery
By Robert Speer
roberts@newsreview.com
More stories by this author...
This article was published on 09.27.07.
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A recent series of events, however, has created conditions that could change all that.
First, in 2001, federal regulators, concerned about low river flows that could harm salmon, angered farmers in the Upper Basin by cutting off their flow of water.
Then, in 2002, after political pressure forced regulators to restore the farmers' water, the Klamath River suffered the largest salmon die-off in U.S. history, some 68,000 fish. California Fish & Game officials blamed the outbreak of a fatal gill-rot disease on low water flows resulting from the federal water policies.
As a result of the die-off, commercial salmon fishing along a 700-mile stretch of the California and Oregon Coast was curtailed for several years—cut by as much as 90 percent in 2006, for example. The financial pain suffered by coastal counties has been severe.
The competition for Klamath River water is one reason why the fish are dying off, but environmentalists, fishing groups and the tribes believe the dams play a larger role. They block the fish from much of their former spawning grounds, heat river water to temperatures lethal to salmon, and provide habitat for massive blooms of toxic algae, a health risk to both fish and humans.
Since 2004, the dams have been going through a 50-year relicensing process with the Federal Energy Regulatory Commission. During that process, anti-dam activists have been trying to pressure PacifiCorp—the Portland, Ore.-based utility company that owns the dams—to tear them down.
If the activists are successful, it will be the biggest dam-removal project in U.S. history, and would revitalize one of the nation's greatest rivers and bring new live to the subsistence economies of the Indians. But it would also mean removing four emissions-free plants that provide power sufficient for 70,000 homes, about 2 percent of PacifiCorp's output.
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