DBPapers
DOI: 10.5593/SGEM2014/B51/S20.093

THE COMMUNITIES OF WATER MOLLUSCA IN THE FLOODED SUBSIDENCE RESERVOIRS IN UPPER SILESIA

Valova E., Truchla M., Stalmachova B., Zaoralova M., Cechakova K.
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-17-9 / ISSN 1314-2704, June 19-25, 2014, Book 5, Vol. 1, 681-688 pp

ABSTRACT
The contribution deals with the inventory of aquatic molluscs in flooded subsidence reservoirs of Upper Silesia, which are formed as a side effect of deep mining of coal. During the 8 months were conducted inventory survey of 8 sites that differ from each other mainly in area, depth, altitude, type of bottom sediment, species composition of the littoral vegetation and hydrochemical parameters such as pH, temperature, conductivity. The totals of 12 aquatic species were found of the phylum Mollusca (10 gastropods and 2 bivalves) in the study area. Only one species of Hippeutis complanatus (Linnaeus, 1758) has not been found compared to inventory survey, which was conducted during 2011 and 2012 by Kašovská (2012). The positive results we classify the occurrence of a rich population of Aplexa hypnorum (Linnaeus, 1758) in a research station called the U skládky, which provide a refuge for the nearly endangered species. The smallest flooded mine subsidence is located in a heavily anthropogenically affected area not only in terms of undermining, but also the storage of municipal solid waste. Exploration of aquatic molluscs also confirmed the expansion of non-native species Physella cf. acuta (Draparnaud, 1805) and Potamopyrgus antipodarum (Gray, 1843), specifically the area Barbara. Executed malacological research will continue also in 2014 and will serve as a model group of animals to assess the ecological functions of flooded subsidence reservoirs of Upper Silesia. The article was prepared with the support of the project PL.3.22/2.3.00/12.03351 “Education of professionals to the care of post mining areas at the Polish-Czech border region”.

Keywords: Upper Silesia, aquatic molluscs, flooded subsidence reservoirs, littoral vegetation, coal mining