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Różnorodność florystyczna dawnego parku dworskiego w Rzeszowie-Zalesiu

Szczurowski Ł., Oklejewicz K.

Polish Journal for Sustainable Development

2018

T. 22, cz. 1

97--106

Na obszarze dawnego parku dworskiego w Rzeszowie-Zalesiu zinwentaryzowano 250 gatunków roślin naczyniowych, z czego 187 stanowiły taksony rodzime i trwale zadomowione. Taksony trwale zadomowione reprezentowane były przez 19 gatunków archeofitów i 16 gatunków kenofitów, w tym 13 inwazyjnych. Odnotowano występowanie 57 gatunków uprawianych, 3 gatunków przejściowo zdziczałych z uprawy oraz 3 gatunków o niepewnym statusie we florze Polski. Odnaleziono również nieutrwalonego mieszańca międzygatunkowego. Określono ponadto poziom synantropizacji flory badanego terenu, wykorzystując następujące wskaźniki liczbowe: antropofityzacji (WAn = 38%), archeofityzacji (WAr = 10,16%), kenofityzacji (WK = 8,56%), modernizacji (WM = 45,71%) oraz stopnia labilności flory (WF = 1,2%).

In the territory of the post-manorial park in Rzeszów-Zalesie the occurence of 250 species of vascular plants were inventoried, of which 187 were native and permanently established taxa. Permanently established species were represented by 19 species of archaeaophytes and 16 species of kenophytes, including 13 invasive species. There were 57 cultivated species, 3 ergasiophygophytes and 3 species of uncertain status in the Polish flora. An unpreseved interspecific hybrid has been also discovered. The level of synanthropization of the studied area was determined by using indicators of the antopogenic transitions of flora: anthropophytysation (WAn = 38%), archaeophytysation (WAr = 10,16%), kenophytysation (WK = 8,56%), modernization (WM = 45,71%) and level of lability of flora (WF = 1,2%).

Distribution of Crataegus (Rosaceae) along a gradient of anthropogenic influence

Oklejewicz K., Chwastek E., Szewczyk M., Bobiec A., Mitka J.

Polish Journal of Ecology

2013

Vol. 61, nr 4

683--691

The impact of land use intensity on the taxonomic composition of hawthorns in four regions of south-eastern Poland was investigated. As a result of different human settlement histories, two of the regions are 54–64% forested nowadays, and the remaining two regions are 70–78% transformed into arable land. Numerical analysis and Monte Carlo permutation tests showed that the purely geographical component of the species distribution, linked with the land use intensity, was statistically significant (1.97%, P = 0.002), as well the pure site component (1.17%, P = 0.010). The human-induced opening of the landscape promotes Crataegus monogyna. Forests are occupied by C. laevigata, C. rhipidiphylla, C. rhipidophylla Gand. var. lindmanii and the hybrid C. × macrocarpa (C. rhipidophylla × C. laevigata); on forest edges the hybrid C. × media (C. monogyna × C. laevigata) tends to occur. Crataegus × subsphaericea (C. monogyna × C. rhipidophylla) is rare and tends to occur in thickets, and a triple hybrid C. monogyna × C. rhipidophylla × C. laevigata colonizes recently abandoned fields. Hybridization seems to be an efficient evolutionary strategy of hawthorns in the face of human-induced transformations of the landscape.