Alliance VAB

Utricularion vulgaris Passarge 1964

Vegetation of bladderworts in mesotrophic to eutrophicwater bodies

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This alliance includes submerged, free-floating vegetation of bladderworts, Utricularia australis and U. vulgaris, in mesotrophic to naturally eutrophic shallow water bodies. Larger stands are developed only in clear water which does not dry out in summer, or in habitats in which the bottom is exposed only for a short time and complete substrate desiccation does not occur. This vegetation thus occurs mainly in precipitation-rich areas. In the past decades occurrences of this vegetation type in fishponds has declined, but it has become newly established in other types of man-made water bodies such as pools in abandoned sand pits.

Citation: Šumberová K. (2011): Vegetace volně plovoucích vodních rostlin (Lemnetea). Vegetation of free floating aquatic plants. – In: Chytrý M. (ed.), Vegetace České republiky. 3. Vodní a mokřadní vegetace [Vegetation of the Czech Republic 3. Aquatic and wetland vegetation], p. 43–99, Academia, Praha.
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