Vegetation Science Group

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

Vegetation of the Czech Republic

Association VAC03
Ceratophylletum demersi Corillion 1957

Ceratophylletum demersi

Photo on botanickafotogalerie.cz

This vegetation type is dominated by Ceratophyllum demersum, a submerged aquatic macrophyte, the morphology of which is variable depending on the degree of habitat shading and the type of sediment on the bottom. It occurs in shallow water bodies with still or slowly running, eutrophic to hypertrophic water, e.g. in small fishponds, fish-storage ponds, oxbows, channels and flooded sand pits. Due to its ability to grow in turbid water, it tends to spread in habitats affected by anthropogenic eutrophication. It is common across the lowland and colline areas of the Czech Republic.

Orig. (Corillion 1957): Ceratophylletum demersi

Syn.: Ceratophylletum demersi Eggler 1933 (§ 2b, nomen nudum), Gesellschaft mit Ceratophyllum demersum Hild 1956 ms. (§ 1, § 3d), Ceratophylletum demersi den Hartog et Segal 1964, Potamo-Ceratophylletum demersi Hild & Rehnelt 1965, Potamo pusilli.Ceratophylletum demersi Janković 1974 p. p.

Diagnostic species: Ceratophyllum demersum

Constant species: Ceratophyllum demersum, Lemna minor

Dominant species: Ceratophyllum demersum, Lemna minor

Formal definition: Ceratophyllum demersum cover > 50 % NOT Acorus calamus cover > 25 % NOT Ceratophyllum submersum cover > 25 % NOT Eleocharis palustris agg. cover > 25 % NOT Nuphar lutea cover > 25 % NOT Nymphaea alba cover > 25 % NOT Nymphoides peltata cover > 25 % NOT Phragmites australis cover > 25 % NOT Potamogeton crispus cover > 25 % NOT Potamogeton natans cover > 25 % NOT Potamogeton nodosus cover > 25 % NOT Potamogeton trichoides cover > 25 % NOT Sagittaria sagittifolia cover > 25 % NOT Schoenoplectus tabernaemontani cover > 25 % NOT Sparganium erectum cover > 25 % NOT Stratiotes aloides cover > 5 % NOT Typha angustifolia cover > 25 % NOT Typha latifolia cover > 25 %

Source: Šumberová K. (2011): VAC03 Ceratophylletum demersi Corillion 1957. 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. 93-96.