Desmid flora (c hlorophyta, Zygnematophyceae) of the river t isa in the Province of Vojvodina (Northern s erbia)

摘要: This paper presents results of a detailed investigation into the qualitative composition desmid flora Danube performed from April 2002 to May 2003. A total 70 taxa belonging four genera were recorded. Forty-seven are new Vojvodina stretch Danube, while Cosmarium kjellmanii, Staurastrum bloklandiae, and S. smithii algal Serbia. Qualitative dominance typical alkaline eutrophic ecosystems was observed. The planktonic taxa, their quantitative composition, regular seasonal dynamics community analyzed in relation physico-chemi- cal characteristics water. Water quality on basis desmids, which bioindicators. partly unexpected presence certain i.e., several acidophilous species, alpine forms, and/or charac- teristic oligotrophic water