Madeiras mortas de espécies da Estação Científica Ferreira Penna/ECFPn, Pa - identificação, anatomia e relação com as populações vivas.

Abstract

The Ferreira Penna Scientific Station is located in the Caxiuanã National Forest, municipality of Melgaço, 400 km from Belém. It was found that within the areas demarcated for floristic studies there is a considerable number of fallen trees, either because of senility or because of the strong storms that fall on the region. The identification of these trees is being done with the objective of establishing a correlation between the dead and living tree species already identified in the floristic studies that have been conducted in the ECFPn. For this purpose, a survey of fallen trees was done in two samples of 1hectare each, where live trees had been previously inventoried. Preliminary results showed that in inventory 1, 51 fallen trees belonging to 21 genera were identified. In this sample, 524 live trees belonging to 114 different genera had been identified. In inventory 2, 87 fallen individuals of 19 genera were identified. In this sample, 527 live trees from 94 genera had been identified. With these data, we began the calculations of Basal Area, Relative Frequency of Genera, Relative Density of Genera, Relative Dominance, and the Importance Value of Genera. Such calculations were performed both with live trees and fallen trees, where we found a Basal Area corresponding to 10.288m2 of fallen trees in Inventory 1, while the Basal Area corresponding to live trees is 34.408m2. The next steps will be the statistical treatment of the data to establish the correlation of the fallen trees with the living trees and the removal of specimens to prepare slides for microscopic studies.