Jellyfish are attacking the Mediterranean. Biologists-marine painters, studying the waters, is known among the most numerous and diverse populations of marine fauna, are sounding the alarm. If these invertebrates will continue to proliferate at such a pace, will not stand not only marine life, but vacationers here in the summer tourists.
According to Professor Stefano Piraino of Salento University in southern Italy, all 300 (!) kilometers of the beach, which he managed to fly on April 21, swarming with jellyfish. Himself Piraino heads the project control the population of jellyfish in the Mediterranean sea. The shift of the biological balance in the waters in favor of the jellyfish is due, firstly, global warming and, secondly, is due to excessive capture of fish and other edible inhabitants. In addition to jellyfish, thousands of miles of the Mediterranean coast there is no release from tourists onlookers. These “scientists with the air of a connoisseur” and armed with smartphones and “Apple”, relentlessly chasing an umbrella. During the four years of work of specialists in the framework of the mentioned project, the population of jellyfish is only increasing. Experts attribute this phenomenon to global warming. Convince them that the data that come from other areas of the world: is there a process develops in a similar way. Piraino says that on the island of Lampedusa, where the annual resting of about three hundred thousand tourists, you can swim only week of the whole summer. The rest of the time the water is filled with jellyfish.
But that said, the biologist, studying jellyfish at the Institute of Oceanology of Barcelona Jose Maria Gili: “jellyfish have increasingly become a problem around the world, the Mediterranean is no exception. And the farther away from the shore, so they are more insidious and harder to fight them”. This spring off the coast of Valencia Catalogue and specialists of the Institute have recorded a surge of population flowing down jellyfish Pelagia noctiluca . which is one of the most poisonous members of the species. Continue reading
What is the ecological status of the Black sea, whether Unliquidated consequences of ecological catastrophe in the Black sea?
Ecological disaster in Black sea are related mainly to three causes. The first is the flow of the rivers. Let’s not forget that a fairly large European rivers flow into this sea. First of all, the Danube is 200 cubic kilometers per year. Don via the sea of Azov, actually also falls. But the main thing – the Dnieper, the Dniester river, the Rioni, the number of rivers of Turkey. So actually the flow is large, all that Europe produces, or grows in their fields the fertilizer is washed into the Black sea. Therefore, the so-called nutrient runoff, the nitrogen and phosphorus fertilizers leads to the fact that the Black sea began to bloom, like a normal pond. By the way, happens in the Baltic sea, which is likewise closed off from the main part of the ocean. Sea blossoms due to the fact that an additional amount of nitrogen and phosphorus in the surface layer, planktonic organisms, it is used, remains die, sink to the bottom, in shallow water at depths of 10-40 meters, and begins the rotting process additional amounts of these residues, leading to the so-called kill the phenomena, which occur in the pond during winter consumed all the oxygen. Not even in the layer 150-200 m and at depths of 10-20-30 meters,in the North-Western region adjacent to Odessa and to the mouth of the Dnieper, there’s the kill phenomena are very common. And the North-Western part of what is important – there is a very wide shelves. There is a formation of juvenile fish, nageli, and so on. Therefore, this zone is key. Continue reading