EN
The inventory of dragon*ies was con- ducted on 244 sites in the Silesian Province in 2002–2012. The total number of 34 sites of Leucorrhinia pectoralis was found. This species is protected by law in Poland and a priority for the European program for hab- itats protection “Nature 2000”. The compar- ison of the present with historical data from the years 1958–1965 showed that L. pectoralis vanishes from peat bogs in this region. The reason for this situation is deteriorating condition of these habitats, mainly because of their desiccation and industrial pollution. It was noted however, that the species is present in a relatively high number on for- est sinkhole ponds emerging over coal ex- ploitation areas in the central, industrialized part of the province. Approximately 20% of investigated sinkholes presented conditions favorable for the reproduction and develop- ment of L. pectoralis. However, these habi- tats are unstable and do not sustain perma- nent presence of the species.