02360naa a2200313 a 450000100080000000500110000800800410001910000210006024501200008126000090020152013890021065000250159965000200162465000200164465300240166465300280168865300240171665300290174065300310176965300290180065300250182965300190185470000190187370000210189270000210191370000170193470000220195177300730197320949002018-08-31       2018    bl uuuu     u00u1 u    #d1 aCYSNEIROS, V. C.  aSpatial patterns and interactions of dominant tree species in an Amazon tropical rainforest.h[electronic resource]  c2018  aKnowledge 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.  aSpatial distribution  aDinizia Excelsa  aEspécie Nativa  aAstronium lecointei  aDistribuição espacial  aEspécie madeireira  aInhomogeneous K-function  aInterspecific associations  aKernel density estimator  aPeltogyne paniculata  aTimber species1 aDALMASO, C. A.1 aPELISSARI, A. L.1 aMATTOS, P. P. de1 aSOUZA, L. de1 aMACHADO, S. do A.  tRevista de Biologia Tropicalgv. 66, n. 3, p. 1009-1017, Sept. 2018.