Studia botanica hungarica

Author(s): Buczkó, K. & Rajczy, M.
Title: Changes of attached diatoms in a dead arm of the Danube between 1992-1999 at Ásványráró (Szigetköz section)
Year: 2001
Publication date: 2001-11-30
Volume: 32
Pages: 39-61.

Abstract: Periphytic diatoms and diatoms living on algal mats have been studied in a dead arm of the Szigetköz section of the Danube for 9 years. Altogether 123 taxa were recorded. In the last year of the study period notable changes were observed in the flora and in the relative abundance of the dominant taxa. The changes may be attributed to the invasion (and shading) of duckweed (Lemna minor and Spirodela polyrrhiza). In 1999, the coatings were characterised by Achnanthes hungarica, Cocconeis placentula and Navicula cf. saprophila. For years long, Achnanthes minutissima was the dominant species. This means that with the appearance of duckweed the attached flora, especially the dominance of the diatom species, has changed sharply.
Keywords: Danube, Szigetköz, biomonitoring, diatoms
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.