Alliance XCD

Artemisio-Kochion prostratae Soó 1964

Relict vegetation of the Pleistocene loess steppes

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This alliance includes rare, natural, open vegetation occurring rarely in the Pannonian region on steep loess slopes, e.g. in the concave, sunken dirt roads and surroundings of wine cellars in rural, loess areas. It contains species considered as relicts of the Pleistocene cold loess steppes, e.g. Agropyron pectinatum. Kochia prostrata and Krascheninnikovia ceratoides. These species are poor competitors that can grow only in open vegetation; they retreated from most localities due to formation of dense steppe in the wetter climate of the Holocene. The geographical range of this alliance extends from its westernmost limit in southern Moravia and Lower Austria through steppe and forest-steppe areas of south-eastern Europe to southern Russia. From the syntaxonomical point of view this association is transitional between the classes Artemisietea vulgaris and Festuco-Brometea.

Citation: Láníková D., Chytrý M. & Lososová Z. (2009): Suchomilná ruderální vegetace s dvouletými a vytrvalými druhy (Artemisietea vulgaris). Xerophilous ruderal vegetation with biennial and perennial species. – In: Chytrý M. (ed.), Vegetace České republiky. 2. Ruderální, plevelová, skalní a suťová vegetace [Vegetation of the Czech Republic 2. Ruderal, weed, rock and scree vegetation], p. 207–288, Academia, Praha.
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