ecology



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blue Adriatic The Adriatic Sea is a part of eastern Mediterranean Sea basin, surrounded by the Italian peninsula to the West and by the Balkan peninsula to the East. It is linked to Mediterranean Sea through the Otranto Strait on South. The Adriatic basin is orientated a NW-SE direction with length a length of 800 km and medium width of 180 km. Adriatic covers are of 139000 km2 and has volume of 35000 km3 of water. Analysis show that the total renewal of waters within the Adriatic Sea takes place in a period from three to ten years. The Adriatic basin is divided into three different basins: the Northern Adriatic basin, Mid Adriatic basin and South Adriatic basin. Northern Adriatic basin reaches maximum depth of 70 m and decreases towards Northern zone where the average depth is 30 m. Mid Adriatic basin has maximum depth of 280 m (Jabuka pit) and South Adriatic basin separated from the Mid Adriatic basin by the 170 m deep Palagruza Sill reaches maximum depth of 1200 m. The bottom rises toward the Strait of Otranto with average depth of 325 m and approximate width of 75 km. This is one of two regions within Mediterranean where fresh water input exceeds evaporation. This is due mostly to outflow from the river Po on the North. Seasonally, the winter circulation is characterized by a prevalence of warmer Mediterranean inflow reinforced by southerly winds. In summer, there is a stronger outflow of fresher and warmer Adriatic water along the Western coast supported by the Etesian winds.
 

oil spillAdriatic Sea pollution, especially considering Northern basin, is more marked along the Italian, Western coast than along the Eastern coast. Furthermore, a correct evaluation of environmental contamination level cannot avoid considering the main ecosystem dynamics of the basin. In fact, substances such as organic and not organic micro-polluting substance, once introduced into the sea, are not dissolved: they isolate and concentrate, in a different way according to their chemical physical features, in sediments and organisms, where through bio magnification processes and trophic chains, can achieve high concentrations up to several sizes bigger than the initial ones. From mi 70'snumber of project were carnied out and they provided the first data concerning the presence of heavy metals and chlorinated hydrocarbons in water, plankton, mussels, fish, sediments. By that time the Adriatic Sea could be valued as a relatively clean ecosystem, in spite of the presence of some polluting substances with high concentration in limited coastal areas. Also, along the Eastern coast, in contrast to open sea lower values, it were detected evident effects of chemical organic and not organic pollution only in limited zones with urban centers and natural half-closed zones featured by a poor water change. Urban and industrial developments contribute to high level pollution. Oil spills are another source of contamination that directly affect seawater quality and entire see life.

 

 

keep Adriatic cleanEvaluating environmental damage is extremely difficult even under well-defined local conditions. This process involves various factors, economic, social, legal and cultural. Corporate greed, corruption and oppression are the main obstacles in the process of protecting environment and water of Adriatic. The clean water has become a very serious issue. Our habitat is threaten and we have to act. There are number of ways to contribute and support environmental activities. Check following links and find find out your area of interest, Zeleni Forum , Tethys Research Institute .



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