Furthermore, according to the absolute number of living creatures in the underground world, the Slovene Karstic world belongs to very rich ones. Since the red list has not been updated since 1992, the data does not show the actual state, which would describe the number and spreading of the population as well as threatening by man. T he state of ecosystems and their trends in development cannot be established since there are no mapped habitats available. T he most endangered ecosystems are water and marsh ecosystems, extensively dry grasslands, coastal ecosystems as well as underground ecosystems. T he Slovene cave cadastre contains 6700 registered caves, out of which 694 are whether damaged or filled with waste.
T here is no data on wetlands at the national level available, although they are heavily endangered.
Therefore it is very difficult to observe the changes and establish the mode of management and protection. The salt pans are the only region, which was entered into the list of the Ramsar convention. I n forests, rare and endangered species are grouse and capercaillie, some species of insects, reptiles, amphibians, birds and other animals. The defoliation of deciduous trees is on the increase whereas the defoliation of coniferous trees is on the decrease. In order to achieve more effective and cheap observation of biodiversity and endangered species it is necessary to define indicative species at the national level according to regions and according to types of habitats.