SciELO - Scientific Electronic Library Online

vol.66 issue3Temporal and spatial interactions of sympatric mesocarnivores at a Biosphere Reserve: coexistence or competition?Determination of optimal prey for rearing the Tropical Gar Atractosteus tropicus (Lepisosteiformes: Lepisosteidae) author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista de Biología Tropical

On-line version ISSN 0034-7744Print version ISSN 0034-7744


COSTA CYSNEIROS, Vinicius et al. Spatial patterns and interactions of dominant tree species in an Amazon tropical rainforest. Rev. biol. trop [online]. 2018, vol.66, n.3, pp.1009-1017. ISSN 0034-7744.

Knowledge of spatial patterns and interactions of tree species allows for understanding the ecological processes of spatiotemporal structures of tropical forests, becoming essential for the establishment of strategies for the conservation and management of their resources in the long term. The aim of this study was to investigate the spatial patterns and interactions of Astronium lecointei, Dinizia excelsa and Peltogyne paniculata, three dominant timber tree species in the Jamari National Forest, Rondônia, Brazilian Amazon. The Kernel estimator was used aiming to verify the possible influence of first-order factors on species distributions. Inhomogeneous K-functions were applied to analyze species spatial patterns and interactions by means of second-order factors. Univariate analyses revealed different scale-dependent spatial patterns for the species. Aggregation related to ecological characteristics, such as habitat preference and dispersal limitation, was verified for A. lecointei and P. paniculata. D. excelsa presented a random spatial pattern, explained by specific features of its establishment, such as the need for clearings due to light requirements. Interspecific associations were evidenced by bivariate analyses, in which spatial attraction of species resulted from the same preference for microhabitats and the repulsion was a result of niche segregation. Rev. Biol. Trop. 66(3): 1009-1017. Epub 2018 September 01.

Keywords : timber species; spatial distribution; interspecific associations; Kernel density estimator; inhomogeneous K-function.

        · abstract in Spanish     · text in English     · English ( pdf )