Tremedales de Orihuela. 07/01/11; Aragón; 1,845 ha; 40º31'48"N 001º39'00"W. Natura 2000 (SPA, SIC). A high mountain site (1,400m asl) in the Mediterranean biogeographical region dominated by large areas of pine forest and interspersed with dense grassland which contains about 1,000 small peat bogs, including active raised and blanket bogs. Its very diverse and predominantly Mediterranean flora distinguishes this bog complex from others in Europe, offering habitat to more than 600 different plant species, 32 of them endemic. It is especially rich in bryophytes with 141 species of mosses reported, and some unique species of pteridophytes can be found as well. The site also harbours different species of amphibians, reptiles, birds, mammals and invertebrates, some of them threatened globally, such as the endangered European Freshwater Crayfish Austropotamobius pallipes. The site is geologically interesting due to its periglacial formations, namely "rivers of stone" on which the bogs have formed. Human uses include livestock feeding, forestry, fishing, hunting, research and recreational activities. The alteration of the hydrological regime due to water abstraction, changes in traditional land management, and touristic pressure threaten the site. Ramsar Site number: 2039. Most recent RIS information: 2012.