FLORA NACZYNIOWA ANTROPOGENICZNEGO FRAGMENTU DOLINY KŁODNICY W GLIWICACH (WYŻYNA ŚLĄSKA)
VASCULAR FLORA OF THE ANTHROPOGENIC SECTION OF THE KŁODNICA VALLEY IN GLIWICE (SILESIAN UPLAND)

Summary/Abstract: The paper presents the results of floristic research that were carried out in the Kłodnica valley in Gliwice. In the study area 152 vascular species were found that represent 44 families. Native species prevail (71.1%) over anthropophytes (28.9%). Anthropophytes are represented by kenophytes (15.1%), archaeophytes (10.5%), and to a lesser extent by diaphytes (3.3%). The vascular flora of the Kłodnica valley has undergone synanthropisation that is expressed by a dominance of ruderal species (38.8%), low participation of waterside species (4.6%) and high values of the anthropophytisation (28.9%) and kenophytisation (15.1%) indices. Such kenophytes as: Impatiens parviflora, Solidago canadensis and S. gigantea, frequently recorded in the valley, are significant threat to species diversity and functioning of ecosystems of the Kłodnica valley. They invade existing plant communities and successfully compete with native species. In extreme cases they create monodominant aggregations.

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