EN
Biodiversity is usually discussed on three levels: of genetics, of species and ecosystems. Biodiversity may be evaluated as an economic, biological, ethical or social good as well. One of main principles of the sustainable development is preserving biodiversity. To achieve this goal, biodiversity monitoring, evaluation and its protection are crucial. Biodiversity is not easy to assess in spite of many attempts. Usually the presence of chosen species, ecosystems (forest, fi eld, water etc.), landscapes (in the case of regions) or protected areas including Natura 2000 (at national level) are used as indicators of biodiversity. According to the Eurostat, biodiversity is assessed by bioindicators such as: chosen birds, fi sh species and protected areas. Some other methods of biodiversity assessment are also used, from local level (biological site, like forests) to global one (for example indicators used by WWF). These methods are mainly qualitative, but some authors try to estimate costs of biodiversity loss or preservation. The main aim of the paper is an attempt to present chosen indicator methods and measures of biodiversity assessment (at diff erent levels).