Zbiorowiska roślinne na obszarze zreklutywowanego wyrobiska Szczecin-Żydowce

Abstract

A post-extraction gravel pit was subjected to technical reclamation where by the pit was filled with fly ash and covered by a 37–150 cm thick soil layer. Subsequently, biological remediation was applied: the area was sowed with Lolium perenne, Festuca pratensis, Dactylis glomerata, Poa pratensis, Phleum pratense and Trifolium repens. Ten years after the remediation treatments, 47 phytosociological relevès were taken. Two associations were identified: the Artemisio-Tanacetum vulgaris and the Calamagrostietum epigeji. In addition, the area was found to support the Arrhenatheretum elatioris dactylidetosum glomeratae subassociation and a community with Elymus repens. The presence of a total of 133 taxa was recorded. The communities were similar in their species richness which varied from 79 to 81 taxa per community. The lowest species richness (56 taxa) was found in the community with Elymus repens. Of those species introduced during remediation, only Dactylis glomerata proved very frequent, but occurred at small patches. Less frequent were Poa pratensis and Festuca pratensis. The remaining species occurred only sporadically; their development during the succession was limited, or they were eliminated altogether, by other taxa developing spontaneously, e.g., Elymus repens.