Srebarna. 24/09/75; Silistra; 1,464 ha; 44°06'46”N 027°06'41”E. World Heritage Site, Biosphere Reserve, Natura 2000 (SPA, SAC), Managed Reserve. Added to the Montreux Record 16 June 1993. The site includes arable lands, forests, islets with reedbeds and a eutrophic freshwater lake which is the biggest marsh on the Bulgarian part of river Danube. The wetland is an important breeding, staging and wintering site for large number of birds – it is the only breeding site of Pelecanus crispus, with a colony of Phalacrocorax pygmeus as well as of the largest breeding population of Aythya nyroca in Bulgaria. Moreover, the site is also important for endangered fish communities such as the European Eel Anguilla anguilla and mammals like the European Marbled Polecat Vormela peregusna. The main hydrological values are groundwater recharge, flood control and sediment trapping. The major ecological changes in the site are connected with eutrophication leading to succession and increase of the sedimentation processes, which are triggering a decrease in biodiversity richness. Ramsar Advisory Missions took place in 1992 and 2001. The site boundary was extended in 2013 by the incorporation of the protected area Pelikanite. Ramsar site no. 64. Most recent RIS information: 2013.