RESEARCH PAPER
Malacofauna of two hydrologically different habitats in the near-shore zone of the Włocławek Dam Reservoir (Vistula River, Poland)
 
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1
Nicolaus Copernicus University, Institute of Ecology and Environmental Protection, Department of Hydrobiology, Toruń, Poland
2
Nicolaus Copernicus University, Institute of General and Molecular Biology, Department of Invertebrate Zoology, Toruń, Poland
Submission date: 2006-12-20
Acceptance date: 2007-06-13
Publication date: 2020-06-25
 
Folia Malacol. 2007;15(1):25–38
 
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ABSTRACT
We studied molluscan fauna at two sites in the Włocławek Dam Reservoir, differing with respect to the hydrological conditions: a rheolimnic site with a comparatively strong water flow (Soczewka) and a limnetic site, dominated by wave action (Dobiegniewo). Within each site, we sampled molluscs from three substratum types (sand, a thin layer of mud on sand and mud). Samples were collected monthly, from April to October. The taxonomic composition differed between the sites, with Sphaerium corneum (L. 1758), Pisidium sp. C. Pfeiffer, 1821, Bithynia tentaculata (L. 1758) and Viviparus viviparus (L. 1758) being more abundant in Soczewka, while Potamopyrgus antipodarum (Gray, 1843), Marstoniopsis scholtzi (Schmidt, 1856) and Dreissena polymorpha (Pallas 1771) occurred exclusively in Dobiegniewo. S. corneum was a strong dominant in most of the samples, and variation in its abundance was the only cause of the observed differences among the various substrata. Strong differences in the total density and biomass were also observed between the two sites, the molluscs from Soczewka being much more abundant. This phenomenon was particularly apparent on the muddy substratum, which was the most suitable in Soczewka and the poorest in Dobiegniewo. Our study revealed that moderate water flow in Soczewka affected molluscs by improving conditions for them, especially on the muddy substratum.
 
CITATIONS (4):
1.
Shallow-water benthic macroinvertebrate community of the limnic part of a lowland Polish dam reservoir
Małgorzata Poznańska, Jarosław Kobak, Norbert Wolnomiejski, Tomasz Kakareko
Limnologica
 
2.
Water residence time in the Włocławek dam reservoir (the Vistula river, Poland) affects its macrozoobenthos structure
Daria Mimier, Elżbieta Żbikowska, Janusz Żbikowski
Annales de Limnologie - International Journal of Limnology
 
3.
The real threat of swimmers’ itch in anthropogenic recreational water body of the Polish Lowland
Anna Marszewska, Anna Cichy, Tomasz Heese, Elżbieta Żbikowska
Parasitology Research
 
4.
Characteristics of Sinanodonta woodiana (Lea, 1834) Populations in Fish Ponds (Upper Silesia, Southern Poland) in Relation to Environmental Factors Abstract
Aneta Spyra, Małgorzata Strzelec, Iga Lewin, Mariola Krodkiewska, Agnieszka Michalik-Kucharz, Marcin Gara
International Review of Hydrobiology
 
eISSN:2300-7125
ISSN:1506-7629