Federal scientists say they are monitoring a new ocean heat wave off the U.S. West Coast, a development that could badly disrupt marine life including salmon, whales and sea lions.
Federal scientists said Thursday they are monitoring a new ocean heat wave off the U.S. West Coast, a development that could badly disrupt marine life including salmon, whales and sea lions.
"Given the magnitude of what we saw last time, we want to know if this evolves on a similar path," said Chris Harvey, a research scientist at the Northwest Fisheries Science Center. If it lingers, it could be disastrous for the Pacific Northwest's endangered orcas, which largely depend on chinook salmon. The warmer waters can weaken the food web that sustain the salmon and bring predators of young salmon, including seabirds, closer to shore, further reducing their abundance. Chinook returns have been extremely low in recent years following the last heat wave, which scientists dubbed"the blob.
"It's on a trajectory to be as strong as the prior event," said Andrew Leising, a research scientist at NOAA Fisheries' Southwest Fisheries Science Center in La Jolla, California, who developed a way to use satellite data to track marine heat waves in the Pacific.
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