July 25, 2013 - ITALY - Die-off of fish in the lagoon. Thousands of dead fish were seen floating Friday night and yesterday morning in some areas of the central lagoon. In the morning the dead fish has also arrived in the internal channels of the city, also spotted in the Grand Canal. Mullets, go, passerini anguele dead from lack of oxygen in the water (anoxia).
Phenomenon also happened in other summers, but that now appears more massive. «Our technicians are intervened together to ASL», explains the Councillor for the Environment Gianfranco Bettin, «according to the first data the situation is quite normal. The lack of wind and currents caused a global warming of the waters of the lagoon, with obvious difficulties to native species, especially in areas south of the lagoon and the central lagoon. "
In the next hours the City should reach an agreement with the fishing cooperatives to organize the collection of dead fish to be launched in landfills managed by Veritas. An environmental problem has already emerged in recent days with the strong smell of rotting seaweed warned in some lagoon areas, particularly in Fusina and Campalto. the high temperatures of these days and the lack of wind caused the decay of algae.
Phenomenon exploded about twenty years ago with the invasion of giant seaweed, l 'Ulva lactuca, which then was collected with special boats of the company Bread, then alerted by Coinsorzio Venezia Nuova. Mayor Antonio Casellati had first applied to the Venice directive banning the use of phosphorus in detergents. And the situation had improved.
Less polluted waters also for the reduction of the factories in Marghera, and the presence of new treatment plants. But in the lagoon remain waste and poisons of the past activities. For this reason the fishermen ask for thorough checks on the real causes of death of the fish.
"The water near Marghera was very dark," relates one of them, "Thousands of dead fish floating on the surface." A load that the tide has shifted then to Venice. Triggering the alarm in the early hours of yesterday morning.
Is not the first such phenomenon, although its extent appears to be greater than the other times. Die-off of fish was also reported last winter, then because of the low temperatures which caused the freezing of a part of the lagoon fishermen nord.Secondo assists you in any case to a change in the presence of native fish in traditional areas. The change of climate and the great works in the lagoon have resulted in the reappearance of crabs and shellfish, but the disappearance of lagoon fish dishes like bisati and passerini. -
La Nuova. [Translated]