Autori: Nicolin Alma L., Imbrea Ilinca M.

Editorial: Not. Bot. Hort. Agrobot. Cluj , 37 (1), p.54-58, 2009.

Rezumat:

The “Izvorul Bigãr” Nature Reserve is located in south-western Romania. The aim of the present paper is to describe some aspects of the flora and vegetation around Bigãr spring. The analysis of the vegetal association was done using the method of the Central-European phyto-coenological school.
The vegetation around the Bigãr spring and waterfall is dominated by compact beech forests with a grassy layer frequently reduced and a soil rich in humus. On the banks of the watercourse and on the rocks around the spring there are species specific to flooding plains of the beech sub-stratum, but also thermophilous and xerophilous species, many of them Balkan, Pontic or Mediterranean elements.
The phyto-coenoses we analysed belong to the Phyllitidi – Fagetum Vida (1959) 1963 association. The association is characteristic to the shadowed and moister slopes with soils rich in humus and formed on limy substratum with surface rocks sometimes. Species with high abundance-dominance values are Fagus sylvatica, Fraxinus ornus, Acer pseudoplatanus, Tilia cordata, Hedera helix, Asplenium scolopendrium, Arum orientale, Asarum europaeum, Cardamine bulbifera, Lunaria rediviva, Polypodium vulgare.
Such species as Carpinus orientalis, Cotinus coggygria, Fraxinus ornus, Ruscus hypoglossum, Syringa vulgaris point out the more thermophilous character of these forests in southern Banat and remind the existence of the specific bushes on the rocky slopes delimiting the river valleys in the area.

Cuvinte cheie: paduri de fag, caracter termofil, specii rare // beech forest, thermophilous character, rare species