Why Is the Atlantic Ocean Drowning in Seaweed? Scientists Finally Solve the Mystery

Upwelling of deep water rich in phosphorus supports an N-fixing symbiont that lives on Sargassum algae, giving the algae a competitive advantage. By early June of this year, roughly 38 million tons of Sargassum had drifted toward the coasts of the Caribbean islands, the Gulf of Mexico, and northern South America, setting a new record. […]

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