Fungos Agaricomycetes Lignocelulíticos poroides no parque estadual do Utinga Camillo Vianna (PEUT) Belém - PA.

Abstract

Poroid fungi in terrestrial ecosystems stand out as important decomposers and recyclers of organic matter. These organisms are fragile to anthropogenic disturbances because they depend on woody plants to develop. Given that conservation units are not immune to anthropic impacts, it is necessary to study the local fungus to safeguard diversity. Thus, the present study aimed to carry out a survey of poroid lignocellulitic Agaricomycetes in the conservation unit, Parque Estadual do Utinga Camillo Vianna (PEUt) and a taxonomic study using morphological data of species of the genus Rigidoporus Murril collected in the Brazilian Amazon. Thus, four collections were carried out on PEUt trails, from June to September 2022. Specimens of Agaricomycetes poroides fungi from the study area herborized in the João Murça Pires herbarium (MG) of the Museu Paraense Emílio Goeldi were also analyzed, including samples of Rigidoporus from other collection areas. A total of 221 samples of Agaricomycetes poroides fungi were analyzed, 94 of which came from the four collections carried out in the PEUt, resulting in a list of 54 species of Agaricomycetes poroides (Basidiomycota) identified for this conservation unit, classified into nine families: Cerrenaceae, Fomitopsidaceae, Ganodermataceae, Hymenochaetaceae, Meripilaceae, Nigrofomitaceae, Polyporaceae, Schizoporaceae,Steccherinaceae, and the species Larssoniporia tropicalis whose phylogeny is uncertain. The genus Rigidoporus occurred in PEUt with five species (Rigidoporus biokoensis (Bres. ex Lloyd) Ryvarden, R. lineatus (Pers.) Ryvarden, R. microporus (Sw.) Overeem, R. ulmarius (Sowerby) Imazeki, R. vinctus (Berk.) Ryvarden) and the study carried out with complementary specimens collected in other places in the Amazon resulted in 10 species, with two species new to Science (R. varziensis sp. nov. and R. dualcolor sp. nov.). It can be concluded that the data obtained expand the knowledge of fungus in this UC, however new collections and studies are necessary to understand the real diversity of fungi in the area, also enriching the records of Fungal Amazonian, emphasizing the importance of preserving urban forests for safeguard biodiversity.