Ilha do Bananal. 04/10/93; Tocantins; 562,312 ha; 10°31'S 050°12'W. National park. Extensive floodplain system of the Araguaia River with navigable medium to high flow rivers, seasonal lagoons, marshes and numerous islands. Ilha do Bananal is the largest fluvial island in the world. A diverse flora and fauna representing the transition zone between humid tropical forest of the Amazon Basin and woody savannas with gallery forest are present. The site is an extremely rich area for waterbirds, with a wide variety of resident breeding species and many Nearctic shorebirds occurring on migration. Human activities include illegal grazing of domestic livestock, poaching, and some illegal settlement. Ramsar site no. 624. Most recent RIS information: 2002.