Studia botanica hungarica

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Author(s): Gönczöl, J. & Révay, Á.
Title: Aquatic Hyphomycetes in two streams differing in discharge and distribution of leaf litter
Year: 2004
Publication date: 2004-10-30
Volume: 35
Pages: 45-58.

Abstract: Aquatic hyphomycete conidia in transport at four sites in two second-order streams in the Börzsöny Mountains, Hungary were analysed in April, October and November. The streams differed in discharge, water chemistry, distribution and composition of leaf litter in the streambed. Both the conidial concentrations and the numbers of aquatic hyphomycete species were significantly higher in the moderately hardwater, slow-flowing Deszkametsző stream than in the softwater, fast-flowing Bagolybükk stream. Opposite patterns of changes in conidial concentrations in a downstream direction were obtained in the two tributaries. Conidial numbers and discharge changed in a contrary direction in both streams. The relatively high conidial concentrations (more than 20,000 conidia L-1) appear to be a general pattern in low-order streams with slow-flowing shallow water, low discharge and meandering streambed filled with a continuous layer of leaf litter. In total 66 fungal species were distinguished whose 60% occurred in both streams. Four species - Alatospora acuminata, Clavariopsis aquatica, Flagellospora curvula and Tetrachaetum elegans - occurred among the top-ranked species at all sites of the two streams.
Keywords: aquatic hyphomycetes, conidial populations, discharge, leaf litter
Subject: botany

Journal: Studia botanica hungarica
Journal abbreviation: Studia bot. hung.
ISSN: 0301-7001
Publisher: Hungarian Natural History Museum, Budapest
Editor(s): Papp, B. & Matskási, I.