The images of thousands of dead fish who appeared on a beach in the Texas gulf coast have raised concerns in the United States. The horde of fish carcasses were found last Friday, June 9, in Bryan Beach, at the mouth of the Brazos River, near the Quintana Beach County Park, according to authorities.
death was “caused by a low dissolved oxygen event”caused by warm water, which cannot hold as much oxygen as cold water, they said.
They also explained that when the water temperature rises above the 70 degrees Fahrenheit (21 ° C), “it becomes difficult for species to receive oxygen to survive.”
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“Shallow waters warm up faster than deeper ones, so if a school of menhaden (30 cm long marine fish) gets caught in the shallows when the water starts to warm up, the fish will start to suffer. hypoxia”, they explained on Facebook.
This lack of oxygen causes the fish to panic, which further reduces oxygen levels. Despite what one might think, fish deaths due to high temperatures are common during these times.
“Often, before a kill event occurs, fish can be seen trying to get oxygen by swallowing water at the surface of the water early in the morning,” authorities said. “Some fish may also be lying on the bottom or at the edge of the water,” they concluded.
Source-larepublica.pe
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