Ten samples of submerged mixed leaves were collected monthly from March 2007 to June 2009 on the margins of five sites in three lakesat Parque Municipal do Ibirapuera, São Paulo, São Paulo State, Brazil. Some abiotic variables were concomitantly measured. At the laboratory, the leaves were washed, fractionated into aliquots (1 cm²), incubated in sterile distilled water for 30 days at 22 ºC, and microscopically analysed. Twenty-seven fungal taxa were obtained, being 15 ingoldianand 12 facultatives, with predominance of Lunulospora curvula Ingold, Triscelophorus monosporus Ingold, Tripospermum myrtii (Lind.) S. J. Hughes, Anguillospora longissima (Sacc. et Syd.) Ingold, and Triscelophorus acuminatus Nawawi. ANOSIM analysis revealed that samples taken from several collection sites in different seasons presented more differences than collection sites sampled in the same season. The intense siltation of one sampling site, located immediately after a flotation unit, almost annihilates the improved abiotic conditions, encouraging careful monitoring to maintain the water quality at the entire park.
aquatic mycota; freshwater fungi; reservoirs; urban waters
