Diversidade das Briófitas da Reserva Ducke, Manaus (Amazonas). Hepáticas (Hepatophyta)

Abstract

This work aims to inventory the population of Hepatophyceae (Hepatophyta) in the Adolpho Ducke Forest Reserve (Manaus, Amazonas, Brazil), a 100 km2 dryland forest. Due to its location very close to the city of Manaus, it has been affected by the unrestrained urbanization process, thus compromising its integrity. Another objective is to determine the specific diversity of liverworts occurring in this area, Central Amazon, and to compare it with that of the Caxiuanã National Forest - Eastern Amazon - in the state of Pará. The material was collected in the PPBIO - Reserva Plot area. The samples were prepared for microscopic analysis in distilled water and placed with slides and coverslips. Identification was done with the help of specialized bibliography. The results obtained were satisfactory, since a considerable variability of genera and species was identified in the region, totaling 39 species divided into 20 genera. A percentage of these species reported to the Ducke Reserve was never referred to the Caxiuanã National Forest, i.e., 9 species or 23% of the total. The study material has not yet been completely analyzed, indicating that this data can still be modified and there is even the possibility of new occurrences being referred to the region or even the possibility of new species being found, showing the need for greater emphasis and greater support to biologists for a more detailed study of the region.