Ócsai Turjános Ramsar Site is an area of peatland located in the Great Hungarian Plain. It supports reed and Scirpus beds, bogs, pools, grassland, arable land, and woodland. The area is important for several rare and protected species of plants and animal species including a number of breeding waterbirds. The internationally protected great bustard (Otis tarda) appears in winter and spring. The Site supports several endemic species of Lepidoptera, the European pond turtle (Emys orbicularis), the otter (Lutra lutra) and several notable plant species. During the spring, Ócsai Turjános also provides refuge for the European mudwinnow (Umbra krameri) and several amphibian species. The Site helps to maintain the hydrological balance of the region and plays an important role in groundwater recharge. The surrounding villages are rich in architectural and other cultural values. Land use is mainly dedicated to agriculture. An ornithological field station is located at the site. The main threats are posed by lowering of water levels due to artificial water management and over-exploitation of the aquifers, communal sewage pollution and colonization by invasive fish and plant species. A wetland restoration project was carried out in 2012.