Wydanie 320(35)3 2015

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    Plant Communities on the Ridge of the “Piotrawin” Quarry 19 Years After Technical and Biological Reclamation
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2015) Kutyna, Ignacy; Malinowska, Katarzyna; Department of Ecology, Envinronmental Protection and Development, West Pomeranian University of Technology, Szczecin, Poland; Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology, Szczecin, Poland
    The research was conducted in 2014 in the ridge area of „Piotrawin” quarry. The aim of the study was to determine the natural succession changes that had occurred in the communities distinguished 16 years earlier (in 1998). 20 relevés were made. Segetal communities of Sileno inflantae-Linarietum minoris and Lathyro-Melandrietum noctiflori which had been present in 1998, were not found in phytocenoses of 2014. As a result of the transformation of Inuletum ensifoliae community, the species of Stellarietea mediae class were hardly present in 2014. The phytocoenon was floristically poorer in 2014. The structure comprised of only 88 taxa, compared to the large number of species (from 118 to 148) recorded in the communities of 1998. The average number of taxa was also smaller (34) in comparison to the significant floristic richness of communities in 1998 (from 60 to 62 species). Inuletum ensifoliae community present in 2014 demonstrated also a certain floristic distinction, there have also been differences in the stability of occurrence and cover coefficients of many species in individual phytosociological classes. The phytocoenoses of 2014 are characterised by small coefficients of similarity, which range from 49.0% to 54.0% in relation to the communities distinguished in 1998. In contrast, the relative similarity of communities of 1998 was very high and it ranged from 72.5% to 80%. In the community of Inuletum ensifoliae of 2014, the stability degrees and cover coefficients for a range of species of Artemisietea vulgaris and Molinio-Arrhenatheretea are lower, while the taxa of Festuco-Brometea are significantly higher. A rapid development of shrub species of Rhamno-Prunetea class could also be observed. The ridge area of the querry is predominantly occupied by numerous Cornus sanguinea (S = V, D = 1625), Rosa canina (S = V, D = 738), Cerasus fruticosa (S = IV, D = 225) and other shrub species. These taxa inhabit almost all layers of the community, especially layer b and most probably in a few dozen years the area will be occupied by phytocenoses of Rhamno-Cornetum sanguinei and Pruno-Ligustretum, which are currently surrounding the excavation of the quarry from the south and north.