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Surge in nitrogen has turned sargassum into the world's largest harmful algal bloom


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VIDEO: Sargassum, floating brown seaweed, have grown in low nutrient waters of the North Atlantic Ocean for centuries. Scientists have discovered dramatic changes in the chemistry and composition of Sargassum, transforming.
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Credit: Brian Lapointe, Ph.D.
For centuries, pelagic Sargassum, floating brown seaweed, have grown in low nutrient waters of the North Atlantic Ocean, supported by natural nutrient sources like excretions from fishes and invertebrates, upwelling and nitrogen fixation. Using a unique historical baseline from the 1980s and comparing it to samples collected since 2010, researchers from Florida Atlantic University s Harbor Branch Oceanographic Institute and collaborators have discovered dramatic changes in the chemistry and composition of Sargassum, transforming this vibrant living organism into a toxic dead zone. ....

United States , Gulf Of Mexico , Oceans General , University Of South Florida , South Africa , Florida Bay , Sargasso Sea , Florida Atlantic University , Looe Key , Florida State University , Florida Keys , University Of Southern Mississippi , Rachel Brewton , Brian Lapointe , Peter Morton , Dennis Mcgillicuddy Jr , Scott Lindell , Frankj Hernandez , Atlantic Ocean , Laura Herren , Mengqui Wang , Ecological Forecast Program , Division Of Coastal Sciences , Nature Communications , Department Of Earth , Harbor Branch ,

FAU | Sargassum Now World's Largest Harmful Algal Bloom Due to Nitrogen


Sargassum Now World’s Largest Harmful Algal Bloom Due to Nitrogen
A photo taken this month shows Sargassum piled up on a beach in Palm Beach County, Florida. (Photo credit: Brian Lapointe, Ph.D.)
For centuries, pelagic
Sargassum, floating brown seaweed, have grown in low nutrient waters of the North Atlantic Ocean, supported by natural nutrient sources like excretions from fishes and invertebrates, upwelling and nitrogen fixation. Using a unique historical baseline from the 1980s and comparing it to samples collected since 2010, researchers from Florida Atlantic University’s Harbor Branch Oceanographic Institute and collaborators have discovered dramatic changes in the chemistry and composition of ....

United States , Palm Island , Gulf Of Mexico , Oceans General , University Of South Florida , South Africa , Florida Bay , Sargasso Sea , Florida Atlantic University , Looe Key , Florida State University , Florida Keys , Palm Beach County , University Of Southern Mississippi , Rachel Brewton , Brian Lapointe , Peter Morton , Dennis Mcgillicuddy Jr , Scott Lindell , Frankj Hernandez , Tanju Mishara , Atlantic Ocean , Laura Herren , Mengqui Wang , Ecological Forecast Program , Division Of Coastal Sciences ,

University of Southampton: Fish poop helps remove 1.65 billion tons of carbon from the atmosphere


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New research has shown that carbon in feces, respiration, and other excretions from fishes make up about 16% of the total carbon that sinks below the ocean’s upper layers.
Ecosystems provide a huge range of benefits and services to humans – one of these is the extraction of carbon dioxide from the atmosphere and its burial either in sediments or in the deep ocean.
Now a team of scientists lead by Dr Grace Saba at Rutgers University and including Dr Clive Trueman from Southampton have amalgamated their existing knowledge to estimate the contribution of fish to the global export of carbon. ....

Clive Trueman , Ocean Observing Leadership At Rutgers University , University Of Southampton , Dr Grace Saba At Rutgers University , Biogeochemistry Program , National Science Foundation Ocean Carbon , Rutgers University , Associate Professor , Marine Ecology , Ocean Observing Leadership , National Science Foundation , Ocean Carbon , கிளைவ் ட்ரூமந் , பல்கலைக்கழகம் ஆஃப் சவுத்தாம்ப்டன் , டாக்டர் கருணை சபா இல் ரட்ஜர்ஸ் பல்கலைக்கழகம் , தேசிய அறிவியல் அடித்தளம் கடல் கார்பன் , ரட்ஜர்ஸ் பல்கலைக்கழகம் , இணை ப்ரொஃபெஸர் , கடல் சூழலியல் , தேசிய அறிவியல் அடித்தளம் , கடல் கார்பன் ,