Scientists in Florida believe that they have identified the “turning point” in weather conditions in the Atlantic Ocean, which they say is the reason Giant blocs of toxic seaweed To submerge the beaches around the Caribbean Sea in the last summer.
Previous theories of The great Atlantic Sarmasum belt This led to the killing of marine animals, damaging human health and walked that the tourism industry in many countries includes a group of nutrients in the water, such as nitrogen and phosphorous in the surface flow of intense agriculture and carried in the ocean in the Kongo, Amazon and Mississippi.
While marine scientists at the University of South Florida (USF) They acknowledge that as a contributing factor, they say that the main source of nutrients is a seasonal phenomenon known as the vertical confusion in which the winds that depart from the ocean are converted and the deep water nutrients focus to the surface.
They have identified pressure changes in the atmosphere on the Atlantic Ocean starting in 2009 as a turning point, where the differences in blood circulation and wind patterns are paid more The Caribbean Sea District And the American Gulf coast.
“This was a surprising result,” said Frank Muller Carrger, distinguished professor and designer of the biological oceans at the College of Marine Sciences at the University of Southern California. His team of international researchers used computer modeling to repeat the transfer of flowers on strong negative currents North Atlantic fluctuation (NAO), and how the changing atmosphere conditions helped create a giant Sargassum belt.
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Muller Carrger continued, saying: “The models have shown that some sarps stains have swept the winds and currents from the Sargaso Sea towards Europe, then moved south, and since they were injected into the orbital Atlantic Ocean.
“Initially, we saw a few spots pushed south by NAO. But these algae spots were met with the appropriate conditions for growing and perpetuating flowers. This population of algae, who are now separated from the Sarbaso Sea, constitute new flowers every year thanks to the presence of enough light, nutrients and warm warmth.”
Almost annually for more than a decade, giant blocs of Goop from the Sargasum Belt at the level of 5000 miles Wash the beach In the Caribbean Sea, from Florida to Mexico, created problems for local authorities and tourism -based companies.
There are also great health concerns. The rotting sarpsum releases large amounts of hydrogen sulfide, which fill the air with a preliminary smell similar to rotting eggs, and can raise asthma and other respiratory problems.
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In 2023, scientists at the University of Florida Atlantic (FAU) warned ofA perfect nurse storm [with] The effects of both marine life and public health, “after I found high levels of meat eating Vibrio bacteria Inherent in the dissolved vegetation.
They said that the plastic debris in the ocean pollution is mixed with the saddles to create a spread of bacteria, which creates an additional health threat to tourists, municipal crews to cleanse sea herbs and volunteers who clean the beach.
“This Vibrio is very aggressive and can search for plastic and stick to it within minutes,” said Trice Miners, a professor of biology at the Faore Harbor Institute for Ocean Sciences and Harriet Lilx Honors College.
“We really want the public to realize these associated risks. In particular, caution must be taken into account with the harvest and treatment of the Sarmasum biomass until the risks are more comprehensive.”
USF research, cooperation with scientists from Toulouse University, Sorbon University and the Center for Scientific Research and Higher Education, was It was published in Nature Communications.
Their report analyzed contracts of winds, currents and 3D nutrient measurements from the Atlantic Ocean of annual flowering modeling.
