Sind die Rotbuchenwälder im Pieria-Gebirge (Nordgriechenland) höhenzonal oder extrazonal? Eine Studie zum Übergang zwischen temperaten und submediterranen Wäldern in Nordgriechenland
[Do the Fagus sylvatica forests of the Pieria mountains (Northern Greece) form an altitudinal belt, or are they extrazonal? A study of the transition between temperate and submediterranean forests in Northern Greece]
Reif, Albert; Löblich-Ille, Kerstin
Exposition, elevation, and soil water storage capacity represent major factors of forest vegetation differences at the north-exposed, shaded slopes of the valley of the Mavroneri creek, Pieria mountains, Northern Greece. Above ca. 1250 m a.s.l., red beech (Fagus sylvatica) represents the dominant canopy species in a species-poor, high-montane Orthilio-Fagetum which can be further subdivided into four subassociations. Below ca. 1250 m a.s.l., there exists a transition towards montane beech forests of the Lathyro-Fagetum. Within the Lathyro-Fagetum, species richness is increasing in the tree tier, the understorey, and ground vegetation. On steep slopes, tree species of the genera Acer, Ulmus and Tilia very locally are dominating. Riparian forests below ca. 900 m a.s.l. contain Platanus orientalis. On shallow soil above ophiolith, Pinus nigra ssp. pallasiana is forming small stands. At lower elevations, submediterranean coppice forests consisting mainly of Quercus species become dominant. The altitudinal limit between submediterranean oak-rich forests, and temperate beech forests differs, depending from exposition and subsequent insolation. On south-exposed slopes, the boundary may be at ca. 1300 m a.s.l., whereas on north-exposed slopes, beech forests dominate at elevations above ca. 700 m.