Changes in occurrence of rare segetal species in the Landscape Park Podlaski Przelom Bugu [Poland] after 10 years of studies
2006
Rzymowska, Z. | Skrzyczynska, J. | Skrajna, T.,Akademia Podlaska, Siedlce (Poland). Katedra Ekologii Rolniczej
In the paper are presented results of the comparison studies (carried out between 1994-95 and 2002-04) on occurrence of supraregionally rare species in the area of central and western part of the Landscape Park Podlaski Przelom Bugu. After 10 years, the significant changes in numerical force and abundance of stands of the investigated species were observed. Stations of Polycnemum arvense and Herniaria hirsuta were not confirmed in the second period of studies. Decrease in the number of stations and abundance of stands of: Chenopodum polyspermum, Melandrium noctiflorum, Malva pusilla, Papaver rhoeas and other were noted. Among the most endangered extinction species are: Neslia paniculata, Veronica opaca and Galium spurium
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