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Elevation measurements in the northern area of mining areas Doubrava and Karvina Mines I in 2020
Kajzar, Vlastimil ; Staš, Lubomír ; Foldyna, Josef
In the northern area of the Doubrava and Karviná Mines I mining districts on the border of the cadastral district Dětmarovice and Doubrava, mining operations are underway. For this reason, in order to identify possible mining effects on the surface and surface objects, the stabilized points in this area are surveyed regularly twice a year. Since 2014 the Institute of Geonics AS CR, v.i., Ostrava has been selected as the contractor of these works. In June and November 2020, the surveying stages planned for this year were carried out, during which altogether 4 interconnected leveling routes, which are formed by these points, were carried out.
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Small terrestrial mammals as an indicator of the restoration Sokolov area after coal mining
Červená, Lucie ; Kouba, Marek (advisor) ; Markéta, Markéta (referee)
Aim of this paper was to describe the diversity of small terrestrial mammals on selected habitats of Velka podkrusnohorska spoil heap and surrounded areas. Between years 2013 2015 there was realized seven catching on the twenty seven study sites. In every year we repeated a catches in spring and autumn period. The selected habitats were: wetlands, meadows, pine forests, oak forests and successional forests. As a capture method was chose standard line method with usage of snap traps. The obtained data were statically analysed by the R program and the diversity was compared based on the Shannon-Wiener index of diversity. We compared abundance and diversity between spoil heap study sites and surrounding study sites, which were situated out of the Velka podkrusnohorska spoil heap and was sign as control sites. We chose three study sites of every habitat situated on spoil heap and another three sites of every habitat situated out of the spoil heap (control sites). In total we caught 720 small terrestrial mammals of ted species: Crocidura leucodon, Crocidura suaveolens, Microtus arvalis, Microtus agrestis, Mus domesticus, Apodemus sylvaticus, Apodemus flavicollis, Myodes glareolus, Sorex araneus and Sorex minutus.
The highest diversity was on the four wetlands sites which three of them were situated on the spoil heap. The highest abundance was at the meadow site Matyas which was situated on the spoil heap. In the overall assessment of the abundance and diversity of communities of small terrestrial mammals was confirmed equality of spoil heap sites and control sites. In the assessment of abundance and diversity of individual habitats was confirmed equality of spoil heal sites and control sites. Exception was abundance between forests spoil heap sites and control sites, where the equality of abundance was rejected because of higher abundance of control sites. We decide to compare technically restored sites and sites using managed successions on the spoil heap. The diversity of technically restored pine forests and successional forest was confirmed but the equality of abundance of these sites was rejected because of the higher abundance of successional forests. The equality of diversity and abundance of technically restored oak forests and successional forests was rejected because successional forests had higher both of these values.
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