Ana Maria DODOCIOIU, Alexandru TUDOSIE, Mihai SUSINSKI None
Water Frame Directive (WFD) 2000/60/CE assume the improvement of the quality of the aquatic environment during the next 15 years. Its main objective is to establish a frame for protection of surface waters, transition waters, coastal waters and underground waters. One of the main polluting agents of the aquatic environment is the using of fertilizers and manure. The fertilizer quantities within Europe and worldwide within 1975 – 1996 have increased up to 1985, reaching 110 – 270 kg/ha and to 145 million tones a year in the world. After 1985 there was recorded a tendency of decreasing fertilizer quantities both in Europe and worldwide. The eutrophication of surface waters and the contamination of underground waters as a result of massive fertilizer application have a grave impact on ecosystems from several countries from Europe. The effect of nutrients on the eutrophication of waters is done by reducing the biodiversity of ecosystems of the surface waters and exaggerated growing of algae (some toxic). Many times, the toxic substances released by algae have determined the death of fish species and fauna as well as human diseases. There results that nitrogen and phosphorus from waters is the elements that determine the ecological status of inland waters. Beginning with 1990, the nitrate concentration of European rivers has stayed relatively constant and the phosphorus one has decreased due to improving of the management of waste waters and the reduction of phosphorus quantities from detergents. In order to reduce nutrient losses from these waters, at European scale there unfolded within 2007-2011 period the COST Program, Action 869 which I joined. This program has established 80 mitigation options of nutrients losses that can be grouped as follows: nutrient management, crop management, husbandries management, soil management, water management, land use changing management, landscape management, surface waters managemen.
nutrient loss, water quality, Water Frame Directive
Presentation: oral