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The delineation’s for this ecoregion originated from a number of vegetation coverage maps for Mexico, Guatemala, and El Salvador, and were modified by expert review. These moist forests flank the western Sierra Madre de Chiapas, forming the transition from high elevation pine-oak forests to low elevation dry forests. In Mexico, the linework follows the INEGI (date) classification of "selva alta perennifolia", mesophile montane forests, and all human landscapes which fall into this broader classification. Linework was revised at workshops (dates) and by Rzedowski (pers. comm.). Within Guatemala, the linework follows Junio’s (1982) classification of dense and open forests. Maps from Instituto Geográfico Nacional (1972) were also reviewed and incorporated were data gaps were present. Within El Salvador, a national map produced by Instituto Geográfico Nacional (1987) was used to encompass historical forest coverage’s. All border areas were merges by experts at ecoregion workshops (CONABIO 1996 and 1997).
CONABIO Workshop, 17-16 September, 1996. Informe de Resultados del Taller de Ecoregionalización para la Conservación de México. CONABIO Workshop, Mexico, D.F., November 1997. Ecological and Biogeographical Regionalization of Mexico. INEGI Map. 1996. Comision Nacional Para el Conocimiento y Uso de la Biodiversidad (CONABIO) habitat and land use classification database derived from ground truthed remote sensing data Insitituto Nacional de Estastica, Geografia, e Informática (INEGI). Map at a scale of 1:1,000,000. Rzedowski, J. 1978. Vegetación de Mexico. Editorial Limusa. Mexico, D.F., Mexico. Rzedowski, J. pers.comm. at CONABIO Workshop, 17-16 September, 1996. Informe de Resultados del Taller de Ecoregionalización para la Conservación de México Instituto Geográfico Nacional. 1972. Atlas nacional de Guatemala. Ministerio de Comunicaciones y Obras Públicas. Guatemala City, Guatemala. Instituto Geográfico Nacional "Ingeniero Pablo Arnoldo Guzmán". 1987. Mapa básico de la República de El Salvador. San Salvador, El Salvador. Junio, C.A. 1982. Mapa de cobertura y uso actual de la tierra República de Guatemala. Instituto Geográfico Nacional Guatemala, Guatemala City, Guatemala. Reviewed by: In process For more general information on this ecoregion, go to the WildWorld version of this description. All text by World Wildlife Fund © 2001 | |