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Este trabalho teve o objetivo de analisar e descrever os padroes espaciais e as caracteristicas quali-quantitativas da regeneracao da especie arborea Ocotea odorifera (Vell.) Rohwer (canela-sassafras) num fragmento de Floresta Ombrofila Mista localizado na Floresta Nacional de Irati, regiao centro-sul do estado do Parana. Para tanto, foram selecionados tres hectares de amostra para coleta de informacoes sobre altura, diâmetro e localizacao de todos os individuos de canela-sassafras com altura total ≥30 cm. Analises univariadas por meio da funcao K de Ripley foram realizadas, para descrever os padroes espaciais dos individuos em fases distintas de regeneracao e das arvores adultas dessa especie com diferentes tamanhos. A especie apresentou em geral um padrao espacial agregado para a regeneracao natural em todas as escalas analisadas, sugerindo ser um padrao caracteristico da especie nas fases iniciais. A mudanca do padrao agregado para aleatorio foi comprovada com a analise espacial para as diferentes classes de tamanho dos individuos de canela-sassafras. Algumas inferencias foram feitas em relacao aos processos subjacentes, que podem estar associados com os resultados. E possivel afirmar que a especie apresenta potencialidades para o manejo e a conservacao com excelente capacidade de regeneracao natural. Palavras-chave : Floresta com Araucaria; autoecologia; estatistica espacial; canela-sassafras. Abstract Spatial pattenrs for Ocotea odorifera regeneration in National Forest, Irati, Pr . The present research aimed to analyze and describe spatial patterns and quali-quantitative features of natural regeneration of tree species of Ocotea odorifera (Vell.) Rohwer (canela-sassafras) in a fragment of Mixed Ombrophyllous Forest (Araucarian Forest) located at the National Forest of Irati, Parana State, Southern Brazil. Three plots of one hectar each were sampled and height, diameter and location informations were collected for all plants of canela-sassafras with total height ≥ 30 cm. Univariate analyzes using K -function of Ripley were done in order to describe spatial patterns of plants at different regeneration phases as well as of canela-sassafras adults. Generally, this species presented an aggregated spatial pattern at all considered scales of regeneration, suggesting to be a typical pattern at initial phases of this species. The change from aggregated to random spatial pattern was tested analyzing different size classes of canela-sassafras. Some inferences were made considering subjacent processes that could be associated to obtained results. It is possible to say that the studied species presents potencialities for its management and conservation with excellent natural regeneration capacity. Keywords : Araucaria Forest; auto-ecology; spatial statistics; canela-sassafras.

PADRÕES ESPACIAIS NA REGENERAÇÃO DE Ocotea odorifera NA FLORESTA NACIONAL DE IRATI, PR