Poroid fungi (Agaricomycetes, Basidiomycota) from Floresta Nacional de Silvânia – a conservation unit of Brazilian Savanna

Abstract

We present a taxonomic inventory, including ecological aspects, of poroid fungi from the Floresta Nacional de Silvânia, a conservation unit representative of the Brazilian Savanna (Cerrado) biome. Basidioma collection was sampled randomly (active search), between 2005 to 2012, considering the conservation unit area, and occurred along or outside pre-existing trails, mainly within forest formations. Totally we found 27 species, distributed into 22 genera, 9 families and 3 order. The α diversity (Hꞌ) was 2.86; the maximum diversity estimated (H max) was 3.29 and the Pielou equability (Jꞌ) was 0.87. These data, added to species accumulation curve, indicate that the number of species of poroid fungi found has not yet exhausted the real diversity of the area and it may increase with the increase in collections (sampling effort). About 37% of the species were found in both living and decaying wood; 33% exclusively in dead and 22% exclusively in live wood. Among these, 44% were classified as rare in the area, 33% occasional, 15% common and 7% abundant. The most frequent species were those that occurred in both living and decaying wood, while the rare ones occurred exclusively in one type of wood (living or dead). The present work is one of the pioneers in the study of poroid fungi in Central Brazil, increasing the knowledge of this biodiversity in the Brazilian Savanna, which can be used as support to update the management plan of the conservation unit.