Fauna of water mites (Acari, Hydrachnidia) in the stony littoral of water supply reservoirs in the Czech Republic
The article presents the results of a survey of the water mite fauna in 45 dam reservoirs in the Czech Republic that are sources of drinking wa-ter. In 37 reservoirs, the average seasonal concentration of chlorophyll a in water were lower than 20 µg/L, which indicates that most of these reservoirs have an oligotrophic to slightly mesotrophic character. Samples were taken with a hand plankton net in the stony littoral at a depth of 0.5–1.0 m at all localities; therefore, it is possible to compare findings from individual localities, although they do not represent quantitative data of water mites related to unit area or water volume. In total 1,356 water mites (849 adults, 507 nymphs) were caught and 34 species were recorded. Twelve species occurred in more than 15 % of the investigated reservoirs and accounted for 87.4 % of all individuals caught. These species show great locomotive activity, they are adapted for swimming/floating, and they commonly occur in the littoral fauna of European lakes.
Looking back at the period of “transformation” of the T. G. Masaryk Water Research Institute in the years 1990–1997
V roce 1990 byl VÚV TGM rozpočtová organizace, tedy „organizační složka státu“ v současném pojetí. Součástí názvu ústavu již bylo jméno jeho zakladatele T. G. Masaryka, které od padesátých let chybělo v tehdejší zřizovatelské listině této instituce…
Policy of Protection from impacts of drought and water scarcity in the Czech Republic – consultation and processing
In the context of a severe drought period, which has started in 2014, an inter-ministerial commission WATER-DROUGHT was established to prepare a strategic policy document on protection from impacts of drought and water scarcity in the Czech Republic.