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New Research Predicts Effects of Marine Heatwaves on Top Ocean Predators

September 5, 2023
Two tagged blue whales swim in Monterey Bay in 2016.
Two tagged blue whales swim in Monterey Bay in 2016. NOAA Fisheries permit 16111. Credit: Elliott Hazen/NOAA Fisheries

 

Scientists on the California Current IEA team partook in a collaborative study to understand how marine heatwave events affect the distribution of the region's top predators. The article, recently published in Nature Communicationsmeasured the areas where sharks, sea birds, sea lions, and other charismatic predators moved during 4 recent heatwaves (2014, 2015, 2019, 2020) . Using this information, scientists created a tool that is able to quickly predict movement of these important species across economic and international boundaries during future heatwaves. 

"We are seeing large-scale changes in where and when predators go as a result of climate variability and change. Forecasting potential changes before they happen is critical for proactive climate-ready management,” said Elliott Hazen, a research ecologist at the Southwest Fisheries Science Center. “That is how we can protect the species that need protection and ensure the sustainability of our fisheries and other ocean-based economies."

Read the entire summary of the article here

Current marine heatwave conditions in the California Current region (Blobtracker)