MORAVA RIVER FLOODPLAIN VEGETATION IN RELATION TO LIMITING ECOLOGICALFACTORS

The paper lists and characterizes in more detail most important ecolog ical factors in frequently occurring vegetation types in an inundation area of the Morava river:the water table dynamics, mechanical soil pr operties, influence of human activities. Data on changes of water tabl e are presented, these were obtained in 1992 at two sites (Vyoska pri Morave - S, Male Levare - NW) within the inundation area of the Morava in representative plant communities: 1. Rorippa amphibia-Oenanthe aqu atica, 2. Chenopodium polyspermum-Bidens tripartita, 3. Schoenoplectus lacustris, 4. Glyceria maxima, 5. Carex gracillis, 6. Phragmites aust ralis, 7. Potentilla anserina-Ranunculus repens, 8. Cnidium dubium-Alo pecurus pratensis, 9. Festuca nigrescens, 10. Populus nigra. The soil texture was also analysed. The most important human activities which a ffect the structure of vegetation are pointed out.