The bloom was detected in late July in the Oakland and Alameda areas, and dead fish have since washed ashore in the bay as well as Lake Merritt in Oakland, Calif., the department spokesperson said. Fish and Wildlife, Jordan Traverso.
“An estimated 10,000 yellowfin gobies died…along with hundreds of striped bass and hundreds of sturgeons,” and the bloom is likely impacting all aquatic species in the area “to some degree,” Traverso said.
Algal blooms and dead fish were reported not only along the shores of Oakland and Lake Merritt, but also “for many miles north and south along the coast,” the statement said. Oakland.
Precisely what killed the fish wasn’t immediately known, but it’s “likely related to dissolved oxygen levels and/or toxins produced by algal blooms,” Traverso said.
The cause of the bloom was also unclear. The Oakland government cited several potential sources and contributing conditions.
“Current research suggests that rising temperatures and changing rainfall patterns caused by climate change are a catalyst for their growth,” the post continues.
The state Department of Fish and Wildlife is working to sample strategic locations to “verify the extent of damage to fish and aquatic life,” Traverso said.
Oakland’s Public Works Department and its water board detected “low levels of contaminants associated with harmful algal blooms” in May, the city said. The city then posted signs warning visitors to the lake that harmful algae could be there and not to touch the water, she said.