The Nariva Swamp in Trinidad has historically faced threats from illegal squatting, agriculture, logging and hunting activities that damaged the local biodiversity and ecosystems. While the swamp was recognized as an important wetland under the Ramsar Convention in 1992, large-scale illegal rice farmers continued operations in the swamp through the 1990s despite court rulings against them. An environmental impact assessment concluded that rice farming caused over $100 million in permanent environmental damage and was not economically beneficial once subsidies were accounted for. The farmers were finally removed from the swamp in late 1996.