The conidial fungi play an important role in freshwater ecosystems, being responsible for the decomposition of organic matter. In the Caatinga biome, however, studies addressing these fungi are still incipient. This study conducted a survey of aquatic conidial fungi associated with submerged plant debris in lotic environment, in a period of two years, in five areas included in this biome (BrejoParaibano-PB, APA da Chapada do Araripe e PARNA de Ubajara-CE, PARNA da Serra das Confusões-PI, Serra da Jibóia-BA). Ninety species were identified, distributed in 62 genera. Two species were classified as ingoldian fungi, two as aero-aquatic fungi, and 86 as aquatic-facultative fungi. The area of greatest number of species was Brejo Paraibano with 34 species, and the lowest number was of the APA da Chapada do Araripe with 20. In relation to a plant substrate, the leaf blade presented higher number of species, with 63 species. The similarity between the areas, according to Sørensen index, was considered low, with values less than 50%. The data contribute to the knowledge of the biodiversity of aquatic fungi in Caatinga Biome.
biodiversity; lotic environment; hyphomycetes; tropical fungi
