The establishment of a pelagic Sargassum population in the tropical Atlantic: biological consequences of a basin-scale long distance dispersal event

Elizabeth M. Johns,Rick Lumpkin,Nathan F. Putman,Ryan H. Smith,Frank E. Muller-Karger,Digna Rueda,Chuanmin Hu,Mengqiu Wang,Maureen T. Brooks,Lewis J. Gramer,Francisco E. Werner

Progress in Oceanography（2020）

Cited 118|Views25

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Abstract

•Sargassum was exported to the tropical Atlantic during the 2009–2010 NAO anomaly.•Windage is required to reproduce the observed Sargassum distributions.•Exceeding a biosphere tipping point may have led to a tropical Atlantic Sargasso Sea.•Sargassum is aggregated seasonally by Inter‐Tropical Convergence Zone (ITCZ) winds.•Growth in the central tropical Atlantic is enhanced by vertical mixing dynamics.

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Key words

North Atlantic Ocean,Sargasso Sea,Tropical Atlantic,Caribbean Sea,Sargassum,North Atlantic Oscillation (NAO),Windage,Inter-Tropical Convergence Zone (ITCZ),Ekman pumping,Mixed layer depth

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