This vegetation, dominated by Chara vulgaris, occurs in fishponds, flooded sand pits, oxbows, alluvial pools, shallow pools in wet arable fields, ditches or fish storage ponds, even those with concrete bottoms. The dominant species has a broader ecological range than the other Czech stonewort species; it tolerates pollution, disturbance and periodical water drawdowns. It is capable of rapid colonization of suitable habitats, e.g. newly established or recently dredged water bodies. This is accordingly the most common association of the class Charetea in the Czech Republic. It has been recorded in several localities in lowland and colline areas.