68 research outputs found
Spatial patterns and interactions of dominant tree species in an Amazon tropical rainforest.
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
Estrutura Diamétrica e Arranjo Espacial das Espécies Mais Abundantes de um Fragmento de Floresta Estacional Semidecidual em Botucatu, SP
A estreita porta de entrada do Sistema Único de Saúde (SUS): uma avaliação do acesso na Estratégia de Saúde da Família
Optimal specimen collection and transport methods for the detection of avian influenza virus and Newcastle disease virus
No encontro da técnica com a ética: o exercício de julgar e decidir no cotidiano do trabalho em medicina
Homogenization of nonlinearly elastic materials, microscopic bifurcation and macroscopic loss of rank-one convexity
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/46162/1/205_2004_Article_BF00380256.pd
HIPERTENSÃO EM ESTUDANTES DA REDE PÚBLICA DE VITÓRIA/ES: INFLUÊNCIA DO SOBREPESO E OBESIDADE
Low dose of Rotigotine in post-stroke patients with Vascular Parkinsonism. Effects on Quality of Life and Rehabilitation Therapy.
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