Floristic and structural characterization of tree species associated with the pine-oak forest of the Santa Rosa Reserve, Estelí, Nicaragua

Abstract

Structural characterization is one of the main foundations for understanding the spatial distribution and dominance of forest species. The studio was developed in the Reserva Santa Rosa located in the municipality of Estelí in the Almaciguera community. Four circular plots of 314 m² each were lifted along a floristic gradient of 1 km. The diameter, height, age of the trees and collected was recorded. herbaceous and shrub-level vegetative samples to characterize species structures in the association found. The species reported on the plots showed a total of 13 families, 14 genera and 19 herbaceous and shrub species; considering data on structural variations. The floristic composition reported similar densities for Q. sapotifolia and variant densities for P. maximinoi. The Kruskal Wallis test reflected a p=0.416 in three different ranges despite this, the data did not have significant differences in the association. The Gini coefficient presented the most unequal values for plot two of the intervened area with 0.86, in addition to presenting the largest variation in relation to the diameter with 79 cm for Quercus and presenting the most diverse plots in terms of the number of species. The dominance was represented by Pinus at 15.61 m² ha^-1. The IR was recorded by Pinus with 139.57 % on plot two of the pine forest area this is because there is an initial and/or intermediate succession stage, due to the natural regeneration process.