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      COMPOSIÇÃO FLORÍSTICA E DISTRIBUIÇÃO DE EPÍFITAS VASCULARES EM UM REMANESCENTE ALTERADO DE FLORESTA ESTACIONAL SEMIDECIDUAL NO PARANÁ, BRASIL Translated title: Floristic composition and distribution of vascular epiphytes in an altered fragment of Seasonal Semideciduous Forest in Paraná State, Brazil

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          Abstract

          RESUMO Estudos em várias regiões do globo têm demonstrado que a abundância, riqueza e estrutura das comunidades de epífitas vasculares, importantes elementos das florestas tropicais, mostram relevantes modificações de acordo com o grau de interferência sobre a estrutura das florestas. Este estudo teve como objetivo o levantamento e análise da distribuição da flora epifítica vascular do Parque do Ingá (Maringá, PR), verificando a existência de mudanças nesta sinúsia em zonas alteradas ao longo do fragmento estudado. Foram registradas 29 espécies de epífitas vasculares, representadas pelas famílias Bromeliaceae (7), Cactaceae (6), Polypodiaceae (4), Viscaceae (4), Orchidaceae (3), Araceae (2), Piperaceae (2) e Commelinaceae (1). A maioria das espécies são epífitas verdadeiras e as síndromes de dispersão predominantes são a endozoocoria e anemocoria. Em estudo quantitativo, foram amostradas 22 espécies, sendo as famílias mais importantes, quanto ao valor de importância epifítico, Polypodiaceae, Cactaceae e Bromeliaceae, ocupando preferencialmente o fuste alto e a copa. O índice de diversidade de Shannon para o Parque do Ingá foi de 1,106. Nas áreas de zoneamento do Parque há uma distribuição diferenciada das espécies epifíticas, de acordo com a umidade e oferta de luminosidade e nas áreas com maior impacto antrópico a riqueza de espécies foi menor, confirmando estudos anteriores em outras regiões de florestas tropicais.

          Translated abstract

          ABSTRACT Studies in several areas of the world have been demonstrating that important elements of tropical forests like vascular epiphytes show relevant modifications according to the degree of interference on the structure of the forests. This study aims to rise and analyze the distribution of the vascular epiphytes of the Parque do Ingá (Maringá, PR) as well as to verify the existence of changes in this plant group in altered areas along the fragment. In qualitative study, 29 species of vascular epiphytes were registered, belonging to the families Bromeliaceae (7), Cactaceae (6), Polypodiaceae (4), Viscaceae (4), Orchidaceae (3), Araceae (2), Piperaceae (2) and Commelinaceae (1). Most of the species is holoepiphytes and the anemochory and endozoochory are predominant dispersion syndromes. In quantitative study, 22 species were showed. Considering the value of epiphytic importance, the most important families are Polypodiaceae, Cactaceae and Bromeliaceae. They occupy preferentially loud trunk and the top trees. The Shannon diversity index for the Parque do Ingá was of 1,106. In the zoning areas of the park there is a differentiated distribution of the epiphytic species, according to humidity and offer of light and in the areas with larger antropic impact the richness of species was low, confirming previous studies in other areas of tropical forests.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rod
                Rodriguésia
                Rodriguésia
                Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (Rio de Janeiro, RJ, Brazil )
                0370-6583
                2175-7860
                October 2008
                : 59
                : 4
                : 859-872
                Affiliations
                [1] Porto Alegre Rio Grande do Sul orgnameUniversidade Federal do Rio Grande do Sul orgdiv1Programa de Pós-Graduação em Botânica Brazil
                [2] Maringá Paraná orgnameUniversidade Estadual de Maringá orgdiv1Departamento de Biologia Brazil
                Article
                S2175-78602008000400859
                10.1590/2175-7860200859414
                3a33d1ee-7b37-4fe1-b7d5-0b03d12ec8e4

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : November 2008
                : October 2007
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 45, Pages: 14
                Product

                SciELO Brazil


                phytosociology,flora,floresta tropical,síndrome de dispersão,fitossociologia,tropical forest,dispersion syndromes

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