Report of the vascular flora characterization and A and B diversity index in three communities of Los Tuxtlas, Veracruz, Mexico

The overall goal of this study was to understand how vascular flora composition changes through different land use types in Los Tuxtlas, Veracruz, Mexico. We carried out quantitative flora sampling and created an inventory of the trees, shrubs, herbs and Iianas species. To sample each land use type, we established 10 squares of 100 m2.ln total, we had forty of these 100 m2 squares in every community in which we recorded the total number of species. The studied vegetation community had four well defined strata: (I) An arboreous stratum with a canopy that was 30 m tall, (II) The second stratum of medium sized trees and climber lianas that varied from !5 to 20 m tall, (III) <The third stratum of shrubs with less than 8 m tall and (IV) The herbaceous stratum that was 0.5 to 3 m tall. The tropical rainforest present a high number of species, followed by acahuales (or secondary vegetation systems) with more than 5 years of abandonment, Pasture fields had the less number of species followed by maize fislds.This study is incomplete; however, it gives an overview of the flora composition and beta-diversity between four different land use types in the study sites in los Tuxtlas.veracruz.