San Francisco Chronicle

Salmon left to fish for spawn sites

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SACRAMENTO — A desperate decision to truck California’s native baby salmon toward the Pacific Ocean during the state’s drought may have resulted in generation­s of lost young salmon now hard-pressed to find their way back to their reproducti­ve grounds.

With fewer native fall-run Chinook salmon able to make their way back home to the leading salmon hatchery in the state, that hatchery could have only about half as many young salmon as usual to release next spring, the Sacramento Bee reported Tuesday.

For those involved in safeguardi­ng California’s struggling native salmon, it had always been understood that resorting to tanker trucks to carry tiny salmon to the ocean during the drought was

“Everybody kind of acknowledg­ed and understood at the time the consequenc­es.” John McManus, Golden State Salmon Associatio­n executive director on decision to truck baby salmon to the ocean during drought

a trade-off, John McManus, executive director of the fishing industry’s Golden State Salmon Associatio­n, told the Bee. Getting a lift on their migration saved countless salmon, but disoriente­d them.

“Everybody kind of acknowledg­ed and understood at the time the consequenc­es,” McManus said.

Native salmon historical­ly anchored food chains and habitats on both land and in the water in California. Salmon still boost the state’s economy by $1.4 billion annually, the salmon industry says.

Dams that cut native salmon off from their former upstream spawning grounds, and general human demands on water, have helped cut salmon numbers drasticall­y in the state, making state and federal hatcheries crucial for the fish.

California’s drought, declared over just last spring, included some of the driest spells ever recorded in the state. In 2014 and 2015, hatchery managers resorted to sucking baby salmon into tanker trucks for their 280-mile migration toward the ocean, biologists say. Chinook salmon spend two or three years in the ocean before heading back upstream to reproduce.

Since the 2014 class of salmon didn’t learn the route by swimming it on their own power, many have gone astray as they head back upstream now.

Biologists say only a small fraction of those made it back to what would be their usual point of return, at the Coleman hatchery. Salmon managers are tracking now how many of the strayed salmon wound up in other watersheds.

 ?? Rich Pedroncell­i / Associated Press 2014 ?? Young salmon that have been transporte­d by tanker truck from the Coleman National Fish hatchery are loaded into a floating net suspended on a pontoon barge at Mare Island.
Rich Pedroncell­i / Associated Press 2014 Young salmon that have been transporte­d by tanker truck from the Coleman National Fish hatchery are loaded into a floating net suspended on a pontoon barge at Mare Island.

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