Relations between sociological-ecological species groups and Ellenberg indicator values

This study reports on a study on the relations between the ecological indicator values for light, moisture, reaction and nitrogen according to ELLENBERG (1979) and a system of 80 sociological-ecological groups developed for the flora of the Netherlands. This system was refined on the basis of new or corrected information in ELLENBERG (1991), some phytosociological revisions and some corrections of actual indicator values. The resulting groups are homogeneous for all four indicator factors, i.e. they have average values with a standard deviation of less than 1, meaning that 90% of all values are restricted to maximally three adjacent indicator classes