Estudo das briófitas nas parcelas permanentes do ppbio, Caxiuanã - Pará

Abstract

Several works addressing the specific diversity of the bryoflora of the Caxiunã Flona have been reported, but they were not enough to define all this diversity. This work aims to inventory the population of liverworts (Hepatophytal and mosses (Bryophytal occurring in the permanent plots of PPbio Caxiuanã. Because it is formed by a large area of tropical forest with great biodiversity. Another objective is to determine the specific diversity of liverworts and mosses occurring in this stretch of the Eastern Amazon, and to compare it with the Adolpho Ducke Forest Reserve, Central Amazon, in the state of Amazonas. The material was collected at the PPBio/Caxiuanã plot. The samples were prepared for microscopic analysis on slides and coverslips, hydrated with distilled water. Identification was performed with the aid of specialized bibliography. The results obtained were satisfactory, since a considerable variety of genera and species were identified in the region, totaling 63 species divided into 35 genera and 13 families. Of these, eight families are mosses and five are liverworts. A new species Cheilolejeunea sp. and a new occurrence for the state of Pará Cylindrocolea sp. stand out in the results obtained. The comparison of these results will enable the deepening of the study of liverworts and mosses of the Amazon region, thus contributing to future studies of the diversity of these areas. The study material was not completely analyzed, indicating that these data may still undergo changes with the addition of new occurrences for the state or even new species, showing the need for greater emphasis and support to bryologists for a more detailed study of this area.