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Revista mexicana de biodiversidad

versão On-line ISSN 2007-8706versão impressa ISSN 1870-3453


ORTIZ-DIAZ, Juan Javier; TUN-GARRIDO, Juan; ARNELAS-SECO, Itziar  e  GARCIA-GIL, Gerardo. Phanerogamic flora of two enclaves of savanna of the Yucatán Peninsula, Mexico. Rev. Mex. Biodiv. [online]. 2014, vol.85, n.3, pp.665-676. ISSN 2007-8706.

In this paper we present the floristic checklist, including life forms of angiosperms from the savannas of San Miguel Allende (Campeche) and Chacho Lugo (Yucatán). We recorded 142 species belonging to 96 genera and 36 families, herbaceous plants being the dominant life form. The Jaccard index value obtained was 0.169, which shows the significant differences in the floristic composition of each savanna, which share only 24 out of the 142 species recorded. The geomorphological characteristics of each site indicate variations in hydrological dynamics, as reflected in significant variations in the floristic composition. San Miguel Allende is classified as a seasonal savanna, characterized by the presence of genus as Trachypogon and the limited presence of taxa of Cyperaceae, while Chacho Lugo is classified as a savanna hiper seasonal, where species from humid environments are abundant (Cyperaceae, Eriocaulaceae and Lentibulariaceae). The presence of endemic as Echeandia campechianaE. petenensis and Hampea trilobata and the limited presence of introduced plants show the floristic and ecological importance of these sites so poorly studied and highly affected by human activities.

Palavras-chave : Campeche; Mexico.

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