biocenosis naturality index; index diversity; dragonflies; peat bogs; environmental assesment.

Although species diversity measurements are frequent in recent conservation biology works, in practice the heterogeneity indices significance was often overestimated or misinterpreted. Wrong interpretation of this problem we documented on a large data set of dragonflies samples from the 14 Czech and Polish Silesian peat bogs. Data analysis shows that there is no correlation between diversity indices and habitat stability, level of deterioration and odonatocoenosis naturality indices.

Although species diversity measurements are frequent in recent conservation biology works, in practice the heterogeneity indices significance was often overestimated or misinterpreted. Wrong interpretation of this problem we documented on a large data set of dragonflies samples from the 14 Czech and Polish Silesian peat bogs. Data analysis shows that there is no correlation between diversity indices and habitat stability, level of deterioration and odonatocoenosis naturality indices.