Forest systems in Santa Catarina state are virtually unknown regarding Agaricales diversity. Our goal was to determine and compare the Agaricales diversity of two forest systems in Joinville municipality, SC. Plots of 20×20 m were established: three in the Atlantic rain forest and three in Pinus plantations. Basidiomata of Agaricales were collected in January, March, May, July, September and November/2004. Forty species were identified, 31 in the forest and 10 in the plantations. Tricholomataceae was the most important family, with 48% of the species found in the forest. The species with the highest relative abundance were Camarophyllus buccinulus (41%) and Lactarius cf. fragilis (53%) in the forest and in the plantations, respectively. These were also the most frequent species recovered in the forest and in the plantations, with frequency values of 44% and 78%, respectively. Considering species richness and the Shannon diversity index, this study suggests that Agaricales diversity is higher in the forest than in the Pinus plantations.
Basidiomycetes; Atlantic forest; Pinus elliottii; species richness
