Asexual ascomycetes associated with leaf litter in várzeas from Cachoeira do Arari, Ilha do Marajó, Pará, Brazil
Aquatic environment, Ascomycota, Decomposers, Diversity, Taxonomy
Asexual Ascomycetes represent the anamorphic form of the phylum Ascomycota and they are the main decomposers of organic matter. These fungi breakdown molecules such as cellulose and lignin, transferring energy and essential elements from the vegetation to other trophic levels. Studies related to this group in aquatic ecosystems are still scarce, especially in the Amazon, which has numerous environments that are still little explored. Such as floodplains (várzeas), which are subject to periodic flooding and form a complex system of interactions between aquatic and terrestrial ecosystems. In order to expand knowledge about this group, the aim of this study is to carry out a taxonomic study of asexual ascomycetes in floodplain areas of the municipality of Cachoeira do Arari, located on the island of Marajó in the state of Pará. Four collections will be carried out between December 2023 and August 2024, in four floodplain areas of the Cachoeira do Arari, two in the dry season and two in the rainy season. The samples will be washed in running water and incubated in a humidity chamber for 45 days. The microstructures will be analyzed daily under a stereomicroscope and the fungal structures will be mounted on semi-permanent slides to observation in light microscope (MO). The identification of specimens will be based on morphological studies with the aid of specialized literature. The identified fungi will be incorporated into the Herbarium João Murça Pires (MG) of the Museu Paraense Emílio Goeldi. For new species and/or new records for Amazonia, Brazil, South America and the Neotropics, taxonomic descriptions, comments, geographical distribution and illustrations will be provided. This study is expected to expand the data on asexual ascomycetes in the Amazon and explore their richness in aquatic environments such as várzeas.