Algae outbreak kills thousands of fish in San Francisco Bay Area



CNN

Ann algae bloom Thousands of fish have died in the San Francisco Bay Area in recent weeks, forcing shoreline cleanups and foul odors to spread, according to sources, spurring scientists to investigate further the extent of the damage to the ecosystem. I put on

Blooms were spotted in the Auckland and Alameda areas in late July, after which dead fish washed ashore on the shores of the Gulf and Lake Merritt in Auckland.

“An estimated 10,000 yellowfin gobies died, hundreds of striped bass and hundreds of sturgeon,” Traverso said.

The situation escalated earlier this week Lake MerrittWhere many dead fish began to line the shore, according to city officials SaidPart of the lake’s shoreline was mostly covered with small fish carcasses, with even larger fish scattered about. Images from City and his CNN affiliates. KPIX And KGO showed.

A crew hired by the city removed 1,200 pounds of fish from the lake’s shores on Wednesday, continued cleaning the shoreline on Thursday, and cleared floating debris from the lake’s surface over the weekend, the city government said. Said online.It recognizes unpleasant odors around the lake and adjoins it frequently visited park and urban environment.

“It smells. It’s not terribly bad, but it definitely stinks,” said Mitchell Manberg, who was campaigning in the area. told CNN affiliate KPIX Before the cleanup starts this week.

Algal blooms and dead fish have been reported not only along the Oakland and Lake Merritt shorelines, but “for miles north and south along the coastline,” the Oakland release said.

It wasn’t immediately clear what exactly killed the fish, but “it could be related to dissolved oxygen levels and/or the toxins produced by the algal blooms,” Traverso said.

The cause of the bloom was also not clear. The Auckland government cites several potential sources and contributing conditions.

A crew hired by the city will clean up the shoreline of Oakland's Lake Merritt on Wednesday.

“In general, increased nutrients such as nitrogen and phosphorus (from manure and human and animal waste), decreased water flow, stagnant water, increased intensity and duration of sunlight, and sustained high temperatures It creates ideal conditions for these flowers.” City Online Post read.

“Current research suggests that rising temperatures and changes in precipitation patterns caused by climate change are the catalysts for their growth,” the post continued.

Algae are a natural part of ecosystems, but when in excess, the compounds they release can accumulate to levels that are harmful to wildlife and humans. California Water Quality Monitoring Council Say.

The state’s Department of Fish and Wildlife is working to sample strategic locations to “verify the extent of harm to fish and aquatic life,” Traverso said.

Auckland’s public works department and its water department detected “low levels of contaminants associated with harmful algae blooms” in May, the city said. Signs were put up to warn of possible algae and to avoid contact with water.

Source: www.cnn.com

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