Vicende floristiche nei territori delle Alpi Sud-orientali e dell'Adriatico Nord-orientale

Abstract

Abstract Floristic successions on the territory of the SE-Alps and of the NE-Adriatic region. - Pliocene floras were dominated by a large assortment of trees with prevailing conifers. By the end of the Pliocene broad-leaved trees, especially Faggus, took predominance. Several of these « tertiary » elements disappeared completely by the end of the Pliocene, but some of them, as for instance Tsuga, Carya, Pterocarya, Eucommia repeatedly regained these territories and joined the existing vegetation of the subsequent Pleistocene interglacials. The « tertiary » Fagus too disappeared in the Middle Pleistocene, but made its firs appearance (as a new species?) during the early Wurm interstadials and spread vigorously at the beginning of the Holocene. The Holocene vegetational succession is similar to that of the Middle Europe, North of the Alps. It started from the pioneer Pinus-Betula Forest phase and passed over to the Mixed Oak Forest phase which was followed by a weak and short Corylus phase (phase inversion?...