Hundreds of sharks are now hiding in Florida canals, trying to escape toxic substances. Algae Flowers sweeping the state’s Gulf Coast, according to news reports
4 shark species — bonnethead (Sphyrna tiburo), Black chip (Carcharhinus limbatus), Nurse (Ginglymostoma cirratum) And lemon (Lemon shark) —According to, since July 26, it has been hiding in a canal near the Longboat Key in Sarasota County. Parents..Impressive sharing with locals picture Of the waterways where sharks infest online.
Experts say sharks go into the food chain and avoid red tides, the uncontrolled growth of small plants called algae that release powerful neurotoxins, along the Florida coast that caused widespread damage to the food chain. I think I have retreated to the canal. Marine ecosystem.
Mike Heithaus, a marine ecologist and shark expert at Florida International University, said, “Usually we don’t see sharks so piled up in these canals. Sharks go there, but report. It’s not a huge number that has been done. ” I told the Guardian. “If it’s not a big red tide event, it’s not like you see.”
Ridetide is a generic name for flowers created by phytoplankton Karenia brevisAccording to, a species that releases a neurotoxin called brevetoxin that can interfere with the firing of nerve cells. Smithsonian National Museum of Natural History..
Blue-green algae can occur when excess nutrients occur, such as: nitrogen When Rin, Enter the sea through the water system. This causes the algae to grow and reproduce rapidly and out of control. Excess nutrients can result from floods and soil erosion, but they also result from the outflow of fertilizers and animal excrement from agricultural farms.
In addition to being deadly to marine mammals and birds turtle Fish and red tide can cause human health problems. People often get sick when they eat shellfish contaminated with neurotoxins or swim in areas with high levels of toxic algae. Brevetoxin can also float in the air and cause respiratory problems in people with asthma and other respiratory illnesses. National Oceanic and Atmospheric Administration (NOAA)..
According to NOAA, blue-green algae suffer about $ 82 million in economic losses each year due to their impact on fishing and tourism.
This year’s red tide, which began in December 2020, is one of Florida’s worst ever. In July, more than 800 tonnes (725 metric tonnes) of dead fish and marine life, including dolphins and dolphins, inhabit. ManateesAccording to, it was washed ashore in Pinellas County along the Gulf Coast. Parents..
Recent strong winds Tropical Cyclone ElsaAccording to the Guardian, the number of fish and other dead animals that hit Florida on July 7 may have increased. ..
However, experts believe that the recent malfunction at the Pinney Point power plant in Manatee County may be due to the long-lasting red tide of the year. In late March, a dam in a reservoir at a plant that stores phosphorus- and nitrogen-filled water began to fail. On March 30, Florida officials released more than 35 million gallons (132 million liters) of contaminated water into Tampa Bay, which is connected to the Gulf of Mexico, so that pressure on the dam could be relieved and repaired. did. Live science previously reported..
This released water may have provided the algae with the nutrients they needed to grow out of control.
“Without Pinney Points, I don’t think we’ve jumped to the level we’re seeing,” Robert Wiseberg, an oceanographer at the University of South Florida, told a local news station. WTSP..
Retreat to the canal
Very high concentration in the last 8 days K. Brevis According to the focus on St. Petersburg and Sarasota Florida Fish and Wildlife Conservation Commission.. This caused sharks in the area to retreat to the Longboat Key Canal.
“I don’t know what triggers sharks to go to these areas, but in combination with changes in the chemistry of water, oxygen and toxins drawn from the water, and the amount of dead fish around-one of them. It can cause these great concentrations, “Heighthouse told the Guardian.
It is unknown how long the shark has been stuck in the red tide.
“If the conditions outside the canal are really bad, they may get stuck until there is enough oxygen or the toxins are gone when leaving the canal,” Heighthouse said.
This is a potential concern as high concentrations of sharks in such small areas can lead to food depletion.
“If it lasts long enough, they run out of food and energy, and unfortunately some, if not all,,” said Jack Morris, a senior biologist at the Moat Marine Institute in Florida. I will die. ” Local Station Fox 13..
Red tides will continue to be a problem for sharks and other marine life as excess nutrients continue to flow into the ocean.
“When we see this kind of thing happening, we can see how the current ecosystem is out of balance,” says Heighthouse. “We need to start working very hard in Florida to address some of the causes of these blue-green algae.”
Originally published in Live Science.
Sharks hide in Florida canals and escape the toxic red tides that hit the coast
Source link Sharks hide in Florida canals and escape the toxic red tides that hit the coast