Nowe stanowisko Orobanche alsatica (Orobanchaceae) na Wyżynie Małopolskiej

Orobanche alsatica Kirschl., a rare and endangered species in Poland, was found at a new locality on Czerwona Mt. near Bolechowice village (central Małopolska Upland, S Poland) in thermophilous fringe communities (Geranion sanguinei alliance). The newly discovered population consisted of 24 specimens in 2018 and is one of the most numerous on the Małopolska Upland. To preserve the population, active conservation (repeated cutting of shrubs and mowing of the herb layer) and monitoring are required.

Thermophilous fringe communities as an indicator of vegetation changes: a case study of the “Murawy Dobromierskie” steppe reserve (Poland)

In this paper, changes of the non-forest xerothermic vegetation of the “Murawy Dobromierskie” steppe reserve which occurred in the period 1993-2012 are examined. The material comprises 50 relevés, of which 43 date from 2012 and the other 7 - from 1993. Reléves were arranged in 5 analytic tables. A synoptic table was also compiled, and for each syntaxonomical species group distinguished, values of the cover coefficient (C), the collective group share index (G), and the systematic group value (D) were estimated and compared. On the basis of the obtained results, a significant decline in abundancy and/or constancy was observed within the following groups: Ch. Artemisietea vulgaris, Ch. Cirsio-Brachypodion pinnati, Ch. Festuco-Brometea, Ch. Geranion sanguinei, Ch. Koelerio-Corynephoretea, and Ch. Origanetalia and Trifolio-Geranietea sanguinei, whereas for the taxa of the Rhamno-Prunetea, a notable increase in the share of the reserve vegetation was recorded. A sizeable expansion of the moss layer was also observed in this period. The results are discussed with special regard to differences in the methodical background of both field studies.

New associations of the class Trifolio–Geranietea sanguinei Th. Müller 1961 in the Bryansk region

3 new associations: Sedo maximi–Peucedanetum oreoselini, Seselio annui–Hieracietum umbellati, Koelerio glaucae–Agrostietum vinealis, distributed on the fringes of pine and birch forests in the Bryansk region were described using the Braun-Blanquet approach. The associations belong to the alliance Geranion sanguinei Th. Müller 1961. The synecological amplitudes of humidity, acidity and mineral nitrogen soil richness were defined. The distinguished associations are different from those spread in the Western and Central Europe by their coenoflora composition.