Composición florística y estructura de la vegetación secundaria en el norte del estado de Campeche, México

we studied species composition and structure of a ten year-old secondary forest in tepakán, campeche, mexico. we marked 20 plots of 5 × 10 m2 (1,000 m2 in total), where all individuals with a dbh ≥ 2 cm were measured. vegetation structure was characterized using the importance values of the species, and species diversity was estimated with the shannon-wiener (h') index. we recorded 1,150 woody individuals in 43 species, 35 genera, and 21 families. diversity was h'= 1.59. the fabaceae was the family with the highest number of species (14). cordia alliodora was the most important species according to its large stem density, followed by piscidia piscipula and acacia gaumeri. together they account for 33.9% of total importance value. these species are the most important in the structure and physiognomy of the community.