Uticaj sprata žbunova u degradovanoj lužnjakovoj šumi na brošost populacije banatskog božura (paeonia qfficinalis subsp. Banatica /rochel/ soo) ha deliblatskoj peščari
Influence of shrub layer in degraded pedunculate oak forest upon the numerosity of population of the banat peony (paeonia officinalis subsp. Banatica rochel/ soo) on the deliblato sands
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Paeonia offidnalis subsp. banatica (Rochel) Soo is a relict Pannonian endemic subspecies recorded at small number of localities in the Pannonian lowland, hi our country it grows on Deliblato Sands only, at locality Flamunda, within degraded pedunculate oak forest. Phytocoenological investigations in this forest show, that except old individual pedunculate oak trees, there are to be found and individual planted trees of Austrian pine and black locust. The dense layer of lower trees in form of the thicket is characteristic as well the great abundance of shrubs. In the aim to preserve critically small populations of the Banat peony (about 50 individuals), the light felling was carried out in degraded pedunculate oak forest. This experiment, with removing trees and shrubs in this forest, was carried out during the period 1994-1996., on a plot 50x50 m. The results have shown that during the initial three years of the experiment after the light felling was carried out, the number of juvenils of Banat peony, including reproduction of this species, was doubled. Through the repeated regrowth of the plot, the numerosity of the peony population as well the reproductive capacity are decreased.. Results show that the dense shrub layer, is one of endangering factors for the preservation of this species.