Vegetation Science Group

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

Vegetation of the Czech Republic

Association VDC01
Sparganio minimi-Utricularietum intermediae Tüxen 1937

Sparganio minimi-Utricularietum intermediae

Photo on botanickafotogalerie.cz

This is vegetation of dystrophic to mesotrophic bog pools with Sparganium natans, accompanied by Utricularia intermedia. U. minor and U. ochroleuca. It can also occur in nutrient-poor, man-made habitats, such as flooded hollows after peat extraction, littoral zone of oligotrophic fishponds or pools in sand pits. It occurs in deeper water than the other associations of the alliance Sphagno-Utricularion, but can nevertheless easily survive occasional drops of the water table and exposure of the bottom. Scattered localities of this rare vegetation type occur in various parts of Bohemia.

Orig. (Tüxen 1937): Sparganium minimum-Utricularia intermedia-Ass. Tx. 1937 (Sparganium minimum = S. natans)

Syn.: Sparganietum minimi Schaaf 1925 (§ 2b, nomen nudum)

Diagnostic species: Sparganium natans, Utricularia australis

Constant species: Sparganium natans

Dominant species: Sparganium natans; Calliergon cordifolium

Formal definition: Sparganium natans cover > 5 % NOT Glyceria fluitans cover > 25 %

Source: Navrátilová J. (2011): VDC01 Sparganio minimi-Utricularietum intermediae Tüxen 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. 300-301.