Diversidade e distribuição de licófitas e samambaias epífitas em áreas de ecótono de floresta ombrófila mista e estacional no Paraná, Brasil

Abstract

The objective of this study was to evaluate the diversity and distribution of epiphytic lycophytes and ferns in six Municipal Ecological Stations of Mato Rico and Nova Tebas, Paraná, Brazil. Eleven species were sampled in four families (Selaginellaceae, Aspleniaceae, Pteridaceae and Polypodiaceae), being Polypodiaceae the most representative, with seven species. The most common species are Campyloneurum nitidum and Pleopeltis pleopeltifolia, which occur in all Ecological Stations. The six Ecological Stations have relatively low diversity, which is probably related to their being in degraded areas. Because they are extremely sensitive and water dependent groups, degraded areas where abrupt changes of relative humidity, tend to have low species diversity. The floristic similarity of the study areas was evaluated with more 18 other areas of Seasonal Semideciduous Forest, Mixed Ombrophylous Forest or ecotone. The studied Stations grouped with areas of Seasonal Semideciduous Forest and ecotone, being the areas of greater geographical proximity more similar. Microgramma lindbergii was the only indicator of Semidecidual Seasonal Forest.