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Flora of the order Quercetalia pubescentis Br.-Bl. (1931) 1932 in the forest vegetation of the Požega hill area (NE Croatia)

D. Baričević
J. Vukelić

Sažetak

This paper is a part of systematic ecological-vegetational research into the forest vegetation of the Slavonian hill area, an exceptionally valuable site in the vegetation of the Republic of Croatia. Particular attention was paid to the presence of the species of the order Quercetalia pubescentis in the forest vegetation owing to the fact that they are a special and rare feature in continental forest ecosystems. A total of 123 relevés encompassing 12 forest communities were analysed. The analysis of the floral composition of forest communities of Po`ega hill area revealed as many as 213 species, of which 31 or
14.5 % belong to the order Quercetalia pubescentis in a sociological sense. The species from the order Quercetalia pubescentis encompass the warmest, southern, south-eastern and south-western positions in the upper parts of the slopes, the flat tops of ridges and
crests, as well as the stands with lighter and drier conditions. In terms of physiognomy and sociology, the species of the order Quercetalia pubescentis give the most distinct characteristic to the community Lathyro-Quercetum petraeae. The number of species of the order Quercetalia pubescentis decreases considerably going from the west to east with the exception of the Požega hill area. A comparison of species occurring in certain areas shows that the western part differs from the eastern part, to which the hills of Požega belong. The spectrum of biological forms and the spectrum of floral geoelements were determined for each community. The results of the research broaden the perception of the number, distribution and importance of species of Quercetalia pubescentis order in the
forest ecosystems of hills in the Pannonian plain.

Ključne riječi

Forest; vegetation; flora; synecology; Quercetalia pubescentis; Požega; Croatia

Hrčak ID:

3342

URI

https://hrcak.srce.hr/3342

Datum izdavanja:

15.5.2006.

Posjeta: 2.594 *