Acknowledgments.--Field trips were supported by project 13141 "Caracterizacion y Diagnostico Ambiental de la Subcuenca del Rio Usumacinta
" funded by Comision Federal de Electricidad (CFE), Mexico.
Este estudio fue apoyado por el Centro del Cambio Global y la Sustentabilidad del Sureste (CCGSS), proyecto retos para la sustentabilidad en la cuenca del rio Usumacinta
, ecosistemas, cambio climatico y respuesta social
These clades included the water bodies of the Peten-lake district in Northern Guatemala, the Rio Usumacinta
drainage (including Rio La Pasion), and the Rio Belize system.
socolofi (Miller & Taylor 1984) vertiente atlantica, en tributarios superiores de los rios Grijalva y Usumacinta
(Kullander 2003, McMahan et al.
A plan by the Mexican government to build a massive hydroelectric dam on the Usumacinta
River has drawn major opposition from at least 60 indigenous groups on both sides of the Mexico-Guatemala border.
In addition, the organization said, Mendez Barrios was part of the Frente Petenero Contra las Represas (Petenero Front Against Dams, FPCR), a group that opposes the creation of hydroelectric projects in the Usumacinta
Much of the state is covered by a vast swamp lying between the Gulf of Mexico and the highlands of Chiapas, penetrable only by the region's mighty rivers--the Usumacinta
, the Grijalva, and the Tonala--whose recurring floods and frequent course changes further limited the availability of arable land and made any human settlement precarious.
Situated within the Selva Lacandona, between the forested landscapes of the Montes Azules National Park of Chiapas, Mexico and the Sierra del Lacandon National Park of Peten, Guatemala, the Usumacinta
River Valley is now largely cleared of old growth forest.