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    Soil conditions and xerothermic grasses communities within the western edge of the Oder in the vicinity of Szczecin
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017) Kutyna, Ignacy; Malinowska, Katarzyna; Malinowski, Ryszard; Paprota, Dariusz; Department of Ecology, Environmental Protection and Development, West Pomeranian University of Technology, Szczecin; Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology, Szczecin; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin; Department of Soil Science, Grassland and Environmental Chemistry, West Pomeranian University of Technology, Szczecin
    Based on 29 relevés were made in the area of the edge of Western Oder (Ustowo– –Pargowo) two xerothermic grass associations were distinguished. Potentillo-Stipetum capillatae phytocoenon is internally differentiated into the typical variant and the one with a significant share of shrub communities with Rhamno-Prunetea. Apart from numerous species of xerothermic grasses, the structure of the association is formed by sandy grasses taxa with Koelerio glaucae- -Corynephoretea canescentis (Sedum acre, Festuca ovina and Helichrysum arenarium are particularly frequent). Patches of this phytocoenon are found both on soils poorly formed by erosion (SY) made of clayey sands and on typical eutrophic brown soils (BEt) formed of light loam. Adonido-Brachypodietum pinnati phytocoenoses form dense grasslands with the dominance of Brachypodium pinnatum and the grasses of Molinio-Arrhenatheretea (Arrhenatherum elatius, Festuca rubra, Dactylis glomerata) together with the significant share of shrub communities species with Rhamno-Prunetea. Patches of vegetation have developed mainly on typical eutrophic brown soils (BEt) formed of sandy loam and light loam. Typologically varied soils found on the slopes of the edge are characterized by alkaline reaction and a significant content of calcium carbonate. Southern and south-eastern exposition of the slopes and soil conditions are favourable for the occurrence of xerothermic and sandy grasslands. Frequent and numerous presence of shrub communities species (Rhamno-Prunetea) in some patches of both associations, as well as grasses of Molinio-Arrhenatheretea, indicate an intermediate stage in the succession toward the development of seminatural communities as well as shrub communities. In order to preserve the unique flora and the plant communities in the area it should be used extensively (grazing, mowing).