Vegetation of the Czech Republic
Potametum denso-nodosi de Bolós 1957
This vegetation type is dominated by Potamogeton nodosus, a species which possesses both natant and submerged leaves, but the former may be absent in flowing water and the latter in warm, still, turbid water. It occurs in slow-moving rivers, artificial channels or flooded sand pits, but is absent from fishponds. These habitats are usually in an early successional stage or frequently disturbed, with mineral rather than organic sediments on the bottom. Water depth is usually between 30 and 60 cm. It is a rare vegetation type in the Czech Republic, occurring mainly in some sections of lowland river corridors.
Orig. (de Bolós 1957): Potametum densi=nodosi
Syn.: Potametum nodosi (Soó 1960) Segal 1964
Diagnostic species: Nuphar lutea, Potamogeton nodosus, Spirodela polyrhiza
Constant species: Lemna minor, Potamogeton nodosus, Spirodela polyrhiza
Dominant species: Potamogeton nodosus
Formal definition: Potamogeton nodosus cover > 25 % NOT Sagittaria sagittifolia cover > 25 % NOT Sparganium emersum cover > 25 %
Source: ©umberová K. (2011): VBB11 Potametum denso-nodosi de Bolós 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. 171-175.