Central Moravia Research Articles

Relations between heavy metal levels in soil, detritophagous and phytophagous invertebrates

Heavy metal (HM) levels in soil samples taken from surface soil horizon (up to 30 cm depth) and in the bodies of two invertebrate groups (earthworms as detritophagous and snails as phytophagous) were investigated during the vegetation period of 1993 in Central Moravia. Within the frame of large scale monitoring the above samples were taken repeatedly in ten selected habitats, mostly Protected Landscape Areas (PLA) and forests, and heavy metal levels of seven elements (Cd, Pb, Cr, Mn, Cu, Zn, Fe) were estimated by AAS after laboratory treatment. In soil samples three HM forms (fixed, soluble and available) were differentiated. Results indicated that the individual HM are distributed in a characteristic way both in soil and in invertebrate bodies. A relative comparison indicated that soil is the main depot for Pb, Cr, Mn and Fe, whereas biomass accumulates mainly Zn, Cu and Cd (related to kg dry matter). Characteristic differences were also found in the HM levels between detritophagous (earthworms) and phytophagous (snails) invertebrates. Elevated HM levels in several Protected Landscape Areas should be considered as warning symptoms.

Agrocomplex Vrbátky and its Transformation

In the paper the author deals with the space relation between the sugar beet production and its processing in the area of Vrbátky in 1977-1984. The area in question is situated in Central Moravia (Czech Socialistic Republic) and is considered a local agrocomplex (agglomeration of agricultural and food establishments on a local level).

A new zinc mineralization detected by airborne gamma-ray spectrometry in northern Moravia (Czechoslovakia)

Studies of hydrochemical anomalies, self-potential anomalies, and analysis of tectonics showed that a sulphidic mineralization might be present in the southern part of the Devonian belt extending from the Polish border to central Moravia (NNE-SSW). Applied on an extensive territory including the Devonian belt and surrounding adjacent Culm sediments airborne gamma-ray spectrometry detected distinct potassium anomalies in the southern part of the belt. Interpretation of these anomalies and their geophysical and geochemical verification yielded data for the situation of boreholes which hit a so far unknown Zn-sulphidic mineralization at a depth of 75–200 m. The geological interpretation of these potassium anomalies and experience from the survey are discussed.

Geomorphological conditions in the Ponávka river basin between the villages of Lelekovice and Jehnice

The paper presents some results of the detailed geomorphological mapping of the area near the northern border of Brno agglomeration (Central Moravia, Czech socialist republic). The author deals with natural and anthropogenous phenomena from the point of view of the fact, that in the studied territory a new recreation area is to be built in the nearest future.