Nitrofilne zbiorowiska segetalne i zrębów występujące na terenie byłej Akademii Rolniczej w Szczecinie przy ulicach J. Słowackiego i Papieża Pawła VI
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In the investigated area there are patches of segetal vegetation. They were defined as nitrophilous communities of Stellaria media. Species characteristic of Stellarietea mediae class are found in flower beds and also on the exposed and unsheltered surfaces formed by plant cultivation on these sites. These communities are floristically rich (112 taxa), and Stellaria media (S=V, D=870) is a dominating species. Apart from this nitrophilous taxon in the community structure there is a series of species of Molinio-Arrhenatheretea (26 taxa) and Artemisietea vulgaris (24 taxa). Communities of Stellaria media have the features of segetal plant communities, but its structure shows that they are undergoing a process of conversion leading to ruderal and seminatural communities. In the examined area there is also a floristically rich (102 taxa) complex of Calamagrostietum epigeji, typical of forest felling sites. Aside from a frequently found species of a characteristic complex of Calamagrostis epigejos (S=V, D=542), there are also numerous species of Artemisietea vulgaris (31 taxa) and Molinio- Arrhenatheretea (30 taxa) classes. Sparse species, characteristic of the latter syntaxon (Taraxacum officinale and Potentilla reptans) reach a facial form in some patches. Phytocenoses of Calamagrostietum epigeji complex settle down mainly in compact soils situated on small slopes adjacent to the inner roads of the area. They are also found on pavements and lawns.
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