Dragonflies and Damselflies; mining-sedimation pond; secondery biotope; Silesia - Czech Republic.

Informace o složení odonatocenóz vybraných modelových lokalit důlních odkališť Karvinska se zaměřením na bioindikačně významné, vzácné a ohrožené druhy.

Dragonfly community in mining-sedimentation ponds in the region of Karvinsko (Silesia, Czech Republic) is analysed in this paper on the base of research in 2001-2002. The research was carried out in following localities: Mokroš (no.of mapping quadrate 6176, elevation 316 m above sea level), Pilňok (no.of mapping quadrate 6177, elevation 260 m aboce sea level), the systém of mining-sedimentation ponds Důl Dukla (no.of mapping quadrate 6176, 6276). Water parameters (pH and conductivity) are summarized in the Table 2. In total 33 species of dragonflies were found (see the list in the Table 3). The composition of dragonfly community with respect of various categories of nature conservation is presented in the Tabel 4. To the rarest found species belong Aeshna affinis, Anaciaeschna isosceles, Anax parthenope, Somatochlora flavomaculata, Libellula fulva, Orthetrum albistylum, Orthetrum coerulescens, Sympetrum pedemontanum, Sympetrum danae a Leucorrhinia pectoralis.