Vegetation Science Group

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

Vegetation of the Czech Republic

Association VAC02
Stratiotetum aloidis Miljan 1933

Stratiotetum aloidis

Photo on botanickafotogalerie.cz

This vegetation type is dominated by Stratiotes aloides, whose rosettes of serrate leaves float on the water surface in late spring and summer. In autumn they sink to the bottom where they overwinter. Stratiotetum aloidis occurs in water bodies in an advanced stage of terrestrialization, with mesotrophic to naturally eutrophic, still or slow-moving water. It used to be a typical vegetation type of oxbows; now it is found in restored alluvial pools and channels in the floodplain of the lower Dyje river in southern Moravia. Here the population of Stratiotes aloides is native, but it declined in the past and was locally re-introduced from material of regional origin. Other localities in the Czech Republic originated from introductions of plant material of unknown origin.

Orig. (Miljan 1933): Stratiotetum aloidis

Syn.: Hydrocharito-Stratiotetum Kruseman et Vlieger 1937 p. p.

Diagnostic species: Ceratophyllum demersum, Hydrocharis morsus-ranae, Lemna trisulca. Nuphar lutea. Spirodela polyrhiza, Stratiotes aloides

Constant species: Ceratophyllum demersum. Hydrocharis morsus-ranae. Lemna minor. Spirodela polyrhiza, Stratiotes aloides

Dominant species: Ceratophyllum demersum, Hydrocharis morsus-ranae, Lemna minor. Spirodela polyrhiza, Stratiotes aloides

Formal definition: Stratiotes aloides cover > 5 % NOT Typha latifolia cover > 25 %

Source: Šumberová K. (2011): VAC02 Stratiotetum aloidis Miljan 1933. 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. 89-93.