Ciénaga de Lanier y Sur de la Isla de la Juventud. 18/11/02. Isla de la Juventud. 126,200 ha. 21°36'N, 082°48'W. Managed Resource Protected Area (IUCN Category VI). Occupies the southern part of the Isla de la Juventud, including the Ciénaga de Lanier marshland. The site, located in the second largest island of the Cuban archipelago includes diverse biotopes, among them semi-deciduous forests, reef lagoons, marine grasslands, mangroves and peatlands. Within the Caribbean, the site is a truly unique mosaic of ecosystems - amongst them a karstic plain connected to the island's southern coast. This subterranean drainage system yields clear waters that favor the formation of coral reefs. A number of threatened species are present in the site, including green turtles (Chelonia mydas), loggerheads (Caretta caretta), and American crocodiles (Crocodylus acutus). The region possesses a high number of endemic plant species, and constitutes an important nesting site for various chelonian, amphibian, crustacean and fish species. The main threats to the site include forest fires, the future increase of tourism activities in the area, and the possible effects of climate change. Ramsar site no. 1234. Most recent RIS information: 2002.