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Home / Science / What is a brown tide? Scientists worry Florida Red Tide could create new outbreak to create Super Bloom

What is a brown tide? Scientists worry Florida Red Tide could create new outbreak to create Super Bloom



The annual outbreak of algae, the so-called brown tide, has begun off the coast of West Florida, and scientists hope it will not hit the red tide they are already facing.

The brown flood at Florida is made from Trichodesmium a cyanobacterium or blue-green algae. Flowering takes place every year in the Gulf of Mexico and is known to extend so that it is visible from outer space.

According to the Florida Fish and Wildlife Conservation Commission, records are of the eighteenth-century brown flood. Captain James Cook of the British Royal Navy first wrote about large, brown flowers in the water that looked like sandbars.

Because the algae can form colonies large enough to be seen with the naked eye, sailors sometimes refer to them as "sawdust". The tide is brown when it is healthy, but when it begins to rot, it turns green, then pink or red, and then white. The toxins also smell sweet when they wither, like freshly cut hay.

While some strains of Trichodesmium produce toxins, scientists have not discovered that these toxins can damage animals in water or humans. And Trichodesmium is usually not a food source for other organisms living in the water.

But the brown tide feeds on iron in the air, blown out of the Sahara into the Gulf of Mexico. The algae have the unique ability to fix nitrogen. And the red tide, Karenia brevis which already encompasses 1

30 miles of Florida's coast, can feed on it to further spread. [194559008]  Red Tide Dead Fish Fish are flushed to the Sanibel Causeway after they died in a red tide on August 1, 2018 in Sanibel, Florida. The red tide could possibly use the brown tide as a new food source. JOE RAEDLE / GETTY IMAGES

On Friday, August 17, Manatee County, Florida, had collected 150 tons of dead fish for The Disposal over the past two weeks, Manatee County Information Outreach Manager Nick Azzara said Newsweek . At the moment, the Florida Fish and Wildlife Conservation Commission reports that the outbreak is taking place in offshore waters, so scientists hope that the two tides will not be combined.

"As the Trichodesmium bloom dies and" Karenia can potentially use the nutrients that are released, "said Vincent Lovko, a marine scientist, opposite the Bradenton Herald, while he noted that it was not The red tide would use the brown tide as a food source and possibly prolong their lives.


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