Hundreds of #dead #fish wash up on a beach in #Maldonado, #Uruguay
During the weekend, neighbors and tourists from Playa Hermosa, west of Piriápolis, were surprised to find hundreds of dead fish on the coast.
The images reproduced in social networks and the comments made reference to some type of contamination. The truth is that cyanobacteria can be one of the causes, according to experts.
“There have been several days of cases of massive blooms of algae on the coast of the Rio de la Plata and it is clear that the number of blooms is rising year by year,” said the organization Vida Marina Uruguay, which is mainly dedicated to recovery of the coastal ecosystem, among other activities.
“The toxins of the cyanobacteria have often caused the death of fish, especially coastal ones. It is not ruled out that it could be linked if the same mortality appears in other coastal areas of Uruguay, “he said in his Facebook account. The truth is that this situation has not been reported elsewhere, but it is not ruled out that it will happen if the phenomenon continues.
Another possible cause is a prolonged heating of the water temperature and a higher salinity. According to Vida Marina, it is normal that during February, what is known as the Brazilian Current enters the Uruguayan coast, it has a higher temperature than usual on our coast and has higher salinity.
“Until the middle of the month and even a little more, the sudden entry of this type of current means that many species of freshwater and estuarine (exchange of fresh and salt water) can not adapt or move away to more comfortable zones for their development” , said the organization.
In turn, this agency believes that the lack of oxygen in some areas of the sea may be another reason for the mortality. “The increase in water temperature is one of the key factors in the loss of oxygen, which causes damage to many forms of marine life. Among them the fish fry. “
Courtesy of ecos.la