Vegetation Science Group

Department of Botany and Zoology | Faculty of Science | Masaryk University

Vegetation of the Czech Republic

Association VBD03
Potamo perfoliati-Ranunculetum circinati Sauer 1937

Potamo perfoliati-Ranunculetum circinati

Photo on botanickafotogalerie.cz

This vegetation type is dominated by Batrachium circinatum, an aquatic macrophyte which possesses only submerged leaves. It occurs in mesotrophic to naturally eutrophic, still, clear and well insolated water which rarely or never dries out. Habitats include fishponds, flooded sand or loam pits, deep oxbows and alluvial pools in early stages of terrestrialization. This association occurs in lowland and colline areas, but it is not common due to its requirements for high water transparency.

Orig. (Sauer 1937): Potameto perfoliati-Ranunculetum circinati (Sauer) (Ranunculus circinatus = Batrachium circinatum)

Syn.: Ranunculetum circinati Sauer 1937 (fantom), Batrachietum circinati (Bennema et Westhoff 1943) Segal 1965

Diagnostic species: Batrachium circinatum, Potamogeton crispus

Constant species: Batrachium circinatum, Lemna minor

Dominant species: Batrachium circinatum

Formal definition: Batrachium circinatum cover > 25 % NOT Alisma gramineum cover > 25 % NOT Myriophyllum spicatum cover > 25 % NOT Nymphoides peltata cover > 25 NOT Potamogeton acutifolius cover > 50 %

Source: Šumberová K. (2011): VBD03 Potamo perfoliati-Ranunculetum circinati Sauer 1937. In: Chytrý M. (ed.), Vegetace České republiky. 3. Vodní a mokřadní vegetace [Vegetation of the Czech Republic 3. Aquatic and wetland vegetation]. Academia, Praha, pp. 233-236.