Studies were carried out in September 2007 at a set of stations called RIVERS located on two tributaries of the Narew River, and six stations on the tributaries of the Supraśl River. Concurrently, rotifers were sampled at nine stations of the River Rudnia (called RUDNIA). The aim of the research was the verification of the hypothesis on the uniforming effect of the river drift on rotifer communities inhabiting aquatic vegetation. The total numbers of all monogonont species inhabiting aquatic vegetation of RUDNIA and RIVERS were 83 and 107, respectively. The percentage similarity of rotifer communities from aquatic vegetation and river current at the same stations was relatively low and only slightly higher in RIVERS (21.7%) than RUDNIA (17.1%), which suggests that species composition of communities of epiphytic rotifer fauna has a rather low impact on species structure of rotifer communities in water drift. The set of individuals of different species carried with the water current was random and various at different stations. Although the percentage similarity of rotifer communities in the river drift calculated for all possible pairs of the stations was relatively lower in RIVERS than in RUDNIA, it was not reflected in the similarity of epiphytic rotifer communities, which were similar in both sets of stations. Thus, the hypothesis cannot be confirmed by the results of this research.
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Basu B.K. Kalff J. Pinel-Alloul B. 2000 The influence of macrophyte beds on plankton communities and their export from fluvial lakes in the St Lawrence River Freshwater Biol. 45: 373-382.
Downes B.J. Lake P.S. Schreiber E. S.G. Glaister A. 1998 Habitat structure and regulation of local species diversity in a stony upland stream Ecol. Monogr. 68: 237-257.
Duggan I.C. 2001 The ecology of periphytic rotifers Hydrobiologia 446/447: 139-148.
Erben R. 1987 Rotifer fauna in the periphyton of Karst rivers in Croatia Yugoslavia Hydrobiologia 147: 103-105.
Horner R.R. Welch E.B. 1981 Stream periphyton development in relation to current velocity and nutrients Can. J. Fish. Aquat. Sci. 38: 449-457.
Lair N. 1980 The rotifer fauna of the River Loire (France) at the level of the nuclear power plants Hydrobiologia 73: 153-160.
Lair N. Reyes-Marchant P. 1997 The potamoplankton of the Middle Loire and the role of the “moving littoral” in downstream transfer of algae and rotifers Hydrobiologia 356: 33-52.
Modenutti B.E. Claps M.C. 1989 Monogononta rotifers from plankton and periphyton of pampasic lotic environments (Argentina) Limnologica 19: 167-175.
Nielsen D.L. Watson G. 2008 The response of epibenthic rotifers and microcrustacean communities to flow manipulations in lowland rivers Hydrobiologia 603: 117-128.
Puchalski W. 1987 Ugrupowania fitoplanktonu poeksploatacyjnych zbiornikow wodnych (Phytoplankton assemblages in after-exploitation reservoirs) [Dissertation] Institute of Ecology PAS Dziekanow Leśny p. 205 (in Polish).
Shupryt M.P. Stelzer R.S. 2009 Macrophyte beds contribute disproportionately to benthic invertebrate abundance and biomass in a sand plains stream Hydrobiologia 632: 329-339.
Whittaker. R.H. Fairbanks C.W. 1958 A study of plankton copepod communities in the Columbia Basin Southeastern Washington Ecology 39: 46-65.