Almond tree population status as an indicator of habitat availability Lapa Verde in Southeast Nicaragua

Abstract

The research was done in seven communities in the southeast of Nicaragua, in order to determine the current condition of almond-tree population (Dipteryx panamensis), as an indicator of potential habitat for the Green Macaw (Ara ambiguus). 21 plots of 1ha each were sampled, by establishing three plots per community. Community people were also interviewed to determine their relationship with the species object of study. In the sampled plots, a total of 93 almond-trees were counted with Diameter at Breast Height (DBH's) ≥70cm, representing an average density of 4.4 almond-trees/ha. Potential threats were also identified to the species subject of study and its particularity with the communities and ethnic groups. The results of Generalized Linear Models (GLM) and the analysis of correlation, indicate that in the study area, it is not the size or diameter of the almond trees that maintains the green macaws populations, but what influences much is the density of individuals with DAP≥70cm, the level of isolation of the community and the amount and type of uses that the community people gives to the tree. According to Maxent models, on the surroundings of 5 communities (La Bijagua, Bartolo, Indian River, Corn River and Point of Rock) it offers viable conditions for the distribution of potential habitat for almond-tree and thus, for green macaws.