Ócsai Turjános is an area of peatland located in the Great Hungarian Plain. It supports reedbeds, bogs, pools and grassland. The area is important for several rare and protected species of plants and animal species including a number of breeding waterbirds. The globally threatened great bustard (Otis tarda) appears in winter and spring. The Site supports several endemic species of dragonflies, 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 mudminnow (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 birdwatching 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, as well as mining and quarrying.