| Summary: | Abstract This research study contributes to the knowledge of the diversity and similarity of vegetation more than 5 cm diameter at breast height (DBH); the study was carried out in the montane forest located in Tungurahua, Pillaro, Baquerizo Moreno, Indiviso (01°18'S, 78°30'W), at an altitude of 30,400 m. A transect of 1000 m² was made, divided into 5 plots of 50 × 4 m. The species were identified by the ESPOCH Herbarium, and the values calculated were relative density (DR) and relative dominance (DMR) to obtain the Importance Index (IV). 18 families, 29 genera, and 33 species were found, corresponding to 249 individuals, in which the largest number of individuals were accounted for by Escallonia myrtilloides (8.03%), Macleania rupestris (7.63%), Vaccinium floribundum (6.02%), Gynoxis buxifolia and Miconia bracteolata with 5.62%, Bacharis teindalensis and Blechnum loxensis with 4.82%, and Maytenus vertillata, Hypericum laricifolium, Tibouchina lepidota, Brachyotum ledifolium, Sympoccos with 4.02%; the remaining species had lower values. The reason for finding both species of shrub paramo and high montane forest is not so clear, since physiognomically the area under study was a high montane forest. Furthermore, no studies have been conducted in other transition zones, but for this reason, a high number of species of two types of vegetation is found.
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