Global coastal phytoplankton blooms are expanding and becoming more frequent
In short: Researchers analyzing satellite data from 2003 to 2020 found that the spatial extent of coastal algal blooms has increased by 13.2% globally. The study, which examined 153 coastal countries, also observed a 59.2% increase in the frequency of these blooms over the same period.
The study used global satellite observations at a 1-km resolution to map daily blooms. While the researchers identified a link between bloom trends and ocean circulation, as well as the stimulatory effects of rising sea surface temperatures, the findings are based on satellite-derived observations of surface phenomena.
Why it matters: Rising sea surface temperatures and changing ocean circulation are linked to the expanding footprint of coastal algal blooms.
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Sources
- Source: Research: Dai et al. (2023). Coastal phytoplankton blooms expand and intensify in the 21st century. Nature. · cc-by
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