Ecological requirements ofAldrovanda vesiculosa. Testing of its new potential sites in the Czech Republic

Abstract

Summary New potential sites for a critically endangered aquatic carnivorous plant Aldrovanda vesiculosa L. (Droseraceae) were selected and experimentally tested in North and South Bohemia (Czech Republic). Either five or ten plants were planted in 1 m × 1 m nylon enclosures in the selected shallow dystrophic waters at the end of may and plant growth characteristics and water chemistry were investigated at 2–5 week intervals over the growing season of 1994. At three sites, the summer growth was very fast and 38–141 turions developed from the initial 5 plants. Water at these sites is mesotrophic with a high concentration of CO2.