SciELO - Scientific Electronic Library Online

vol.90 issue2  suppl.1Partum and postpartum characteristics on the postpartum rebreeding in beef cattleExtreme cultural persistence in eastern-central Brazil: the case of Lagoa Santa Paleaeoindians author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Anais da Academia Brasileira de Ciências

Print version ISSN 0001-3765On-line version ISSN 1678-2690


PELISSARI, ALLAN L. et al. Spatial variability of tree species diversity in a mixed tropical forest in Southern Brazil. An. Acad. Bras. Ciênc. [online]. 2018, vol.90, n.2, suppl.1, pp.2491-2500. ISSN 0001-3765.

Floristic surveys and diversity indices are often applied to measure tree species diversity in mixed tropical forest remnants. However, these analyses are frequently limited to the overall results and do not allow to evaluate the spatial variability distributions of tree diversity, leading to develop additional tools. This study aimed to estimate the spatial variability of tree diversity and map their spatial patterns in a Brazilian mixed tropical forest conservation area. We used indices to measure the tree species diversity (dbh ≥ 10 cm) in 400 sampling units (25 m x 25 m) from a continuous forest inventory. Semivariograms were fitted to estimate spatial dependences and punctual kriging was applied to compose maps. Mean diversity values were constant in the continuous inventories, indicating a forest remnant in an advanced stage of ecological succession. On the other hand, tree diversity presented spatial patterns identified by geostatistics, in which the dynamics were composed of heterogeneous mosaics spatially influenced by tree species with different ecological features and densities, gap dynamics, advancement of forest succession, mortality, and Araucaria angustilofia’s cohorts.

Keywords : Araucaria angustilofia; Atlantic Forest biome; diversity indices; geostatistics.

        · text in English     · English ( pdf )