http://www1.universia.net/catalogaxxi/C10048PPESII1/S139740/P139651NN1/INDEX.HTML1993 CALAKMUL EN RESERVAS DE LA BIOSFERA - UNESCOhttp://www1.universia.net/catalogaxxi/img/cabecera/universia1.gif http://www1.universia.net/CatalogaXXI «The Calakmul Biosphere Reserve, located at the base of the Yucatan Peninsula, is the largest forest reserve in Mexico. It comprises 723,185 hectares of protected land with some 52 ‘ejidos’, or local communities with almost 23,740 inhabitants (2000) in its buffer zone. It is not an untouched forest, as testify the remnants of Mayan cities, abandoned in A.D. 900. It consists of Tropical humid forest ecosystem type covered with Evergreen tropical humid forest, semi-deciduous forest with low temporally flooded forest, thorn forest and tropical deciduous forest.» ]]> «Es la mayor extensión de bosque tropical protegida en México.
Biológicamente tiene gran valor como corredor biológico entre la Península de Yucatán y Centroamérica.»]]>