Sistema Lagunar de Tisma. 08/11/01; Managua, Granada; 16,850 ha; 12°04'N 085°56'W. A number of small lake, marsh, and river shore ecosystems associated with the northwest shores of Lake Nicaragua. The sites supplies water for cattle grazing, rice cultivation, and irrigation of pastures, recharges groundwater and assists in flood control, retains sediments and contaminants, and supports a number of species of migratory birds. Inhabitants of the site benefit by meat and fish and derive fiber materials for the fabrication of handkerchiefs, mats, fans, and other handicrafts. Rice cultivation and resulting alterations of water level and agrochemical effects have a direct impact upon the site. The Audobon Society Nicaragua and the IUCN Mesoamerica Office assisted in preparation of the designation and in the ongoing development of a management plan, with support from the government. Most recent RIS information: 2001.