Acta Botanica Croatica, Vol. 61 No. 2, 2002.
Izvorni znanstveni članak
Phytogeographical differentiation in the Dinaric fir-beech forest (Omphalodo-Fagetum s. lat.) of the western part of the Illyrian floral province
B. Surina
Sažetak
A phytogeographical assessment of the west-Dinaric fir-beech association Omphalodo- -Fagetum s. lat. (Treg. 1957 corr. Puncer 1980) Marin~ek et al. 1993 (=Abieti-Fagetum dinaricum Tregubov 1957 p.p.) in the western part of the Illyrian floral province is provided. The synoptic phytosociological table and the results of hierarchical classification and ordination showed a quite distinct floristic and phytogeographical pattern of differentiation
in a northwest-southeast direction. The proportion of Southeast – European-Illyrian (Illyricoid) species decreases towards the northwest while Alpine species decrease in the opposite direction. Stands from the Trnovski gozd plateau form a geographical variant Omphalodo-Fagetum var. geogr. Saxifraga cuneifolia, further divided into two geographical sub-variants, western – subvar. geogr. Anemone trifolia and central-eastern – subvar. geogr. Omphalodes verna. All other stands belong to the geographical variant Omphalodo- Fagetum var. geogr. Calamintha grandiflora, also further divided into two geographical sub-variants, subvar. geogr. Dentaria pentaphyllos and subvar. geogr. Dentaria polyphylla. Although the distribution area of the association is well defined in its northwest
part, the question of its south-eastern border is still open. The preliminary results of analyses indicate that the stands southeast of Velebit and Lička Plješivica should be treated as a different association, distinct from Omphalodo-Fagetum. Further phytosociological and phytogeographical research into the entire Illyrian floral province will therefore be needed to resolve the problem of the southern border of the distribution area of the association Omphalodo-Fagetum and the syntaxonomy of south-eastern Dinaric fir-beech stands.
Ključne riječi
phytogeography; vegetation; forest; Omphalodo-Fagetum; Aremonio-Fagion; Dinaric mountains; Slovenia; Croatia; Balkan
Hrčak ID:
3461
URI
Datum izdavanja:
1.10.2002.
Posjeta: 2.146 *