EN
The effects of destruction of meadow which has been degraded as a result of the building of fishing pond in 1989. The directions of plant succession on those area during the last 10 years have been also evaluated. The study has taken the non-used former grassland and extensive but still used meadow located on the area of village Przyrownica, near Pisia river. In the year 1998 10 phytosociological records on the meadow and on the non-used area have been recorded. On the non-used area (the old fishing pond) 39 plant species have been recorded, the highest constancy was been observed for Carex gracilis, Juncus conglomeratus, Typha lalifolia, Sium latifolium and for appeared spontaneously grass species for Phragmites communis and Phalaris arundinacea. Majority of plant communities belonged to class Phragmitetea association of Phragmition and Magnocaricion. In more humid habitats class Molinio-Arrhenatheretea has been recorded. Besides grass species which appeared spontaneously the most important were Phalaris arundinacea. Phragmities communis, Poa trivialis, Poa palustris. On the comparison on the control extensive meadow appeared totally 62 plant species. Molinio-Arrhenatheretea class dominated (37 species), particularly from Molinietalia. Phragmitatea class has been represented only by two but very good adopted to the difficult environmental conditions grass species Phalaris arundinacea and Phragmites communis. Besides the other grass species the most important were Alopecurus pratensis, Holcus lanatus, Festuca arundinacea, and locally Deschampsia caespitosa, Poa trivialis, Poa palustris, Dactylis glomerata. The results show that this tested area does not suit to recultivation and it is not possible to come back to the former meadow. Plant repeated succession is going into the direction of forestry or bug communities. The degraded non-agricultural area has rather biological then agricultural value.