Folia Geobotanica

, 34:287 | Cite as

Seasonal growth dynamics and overwintering of the aquatic carnivorous plantAldrovanda vesiculosa at experimental field sites

  • Lubomír Adamec


New potential sites for the critically-endangered, aquatic carnivorous plantAldrovanda vesiculosa L. (Droseraceae) were selected in North and South Bohemia (Czech Republic) and both its seasonal growth dynamics and overwintering rate were investigated. Groups of either 5 or 10 plants were planted in 1×1 m nylon enclosures in selected shallow, dystrophic waters at the end of May. Plant growth characteristics and water chemistry were investigated at 2 to 5 week intervals over the 1994 growing season inside ten enclosures placed at six sites. Within seven enclosures at three sites, the seasonal growth was very fast and 38–141 turions developed from the initial five plants. Water at these sites was mesotrophic with a high concentration of CO2 above 0.1 mmol.l−1 and pH between 6.2 and 7.6. At the other three sites, plant growth was very poor. The fastest plant propagation was found between late June and mid-August and corresponded with the warmest seasonal period. During this period, the doubling time of the total number of shoot apices was 16.4–34.9 days. Turions developed in mid-September and sank to the bottom by mid-October. In some enclosures, the turions overwintered on the wet bottom whereas they were submersed in the other ones. Though the turions were subject to frosts of up to −20°C, none died due to the frosts. Grazing of turions by ducks or small rodents was found at some sites. The overwintering rate of turions at sites varied from 0 to 70% and was not related to seasonal growth rate. Most turions floated to the surface and germinated during late April-early May. It is suggested that considerable turion losses in stable, naturalAldrovanda stands are compensated for by fast seasonal shoot growth and branching which leads to the recovery of an abundant plant population.


Czech Republic Growth analysis Shallow dystrophic habitats Turion overwintering Water chemistry 


  1. Adamec L. (1995a): Ecological requirements and recent European distribution of the aquatic carnivorous plantAldrovanda vesiculosa L.—A review.Folia Geobot. Phytotax. 30: 53–61.CrossRefGoogle Scholar
  2. Adamec L. (1995b): Ecophysiological study of the aquatic carnivorous plantAldrovanda vesiculosa L.Acta Bot. Gallica 142: 681–684.Google Scholar
  3. Adamec L. (1997a): Photosynthetic characteristics of the aquatic carnivorous plantAldrovanda vesiculosa.Aquatic Bot. 59: 297–306.CrossRefGoogle Scholar
  4. Adamec L. (1997b): How to growAldrovanda vesiculosa outdoors.Carniv. Pl. Newslett. 26: 85–88.Google Scholar
  5. Adamec L. (1999): Turion overwintering of aquatic carnivorous plants.Carniv. Pl. Newslett. 28: 19–24.Google Scholar
  6. Adamec L. &Lev J. (1999): The introduction of the aquatic carnivorous plantAldrovanda vesiculosa to new potential sites in the Czech Republic: A five-year investigation.Folia Geobot. 34: 299–305.Google Scholar
  7. Afanas’ev K.S. (1953): Novoe mestonachozhdenieAldrovanda vesiculosa v SSSR (New site, ofAldrovanda vesiculosa L. in USSR),Bot. Zhurn. 38: 432–434.Google Scholar
  8. Akeret B. (1993): Ein neuer Fundort vonAldrovanda vesiculosa L. in der Nordschweiz und einige Bemerkungen zuStratiotes aloides L.Bot. Helv. 103: 193–199.Google Scholar
  9. Bartley M.R. &Spence D.H.N. (1987): Dormancy and propagation in helophytes and hydrophytes.Arch. Hydrobiol. (Beih.) 27: 139–155.Google Scholar
  10. Beer S. (1985): Effects of CO2 and O2 on the photosynthetic O2 evolution ofSpirodela polyrhiza turions.Pl. Physiol. 79: 199–201.CrossRefGoogle Scholar
  11. Berta J. (1961): Beitrag zur Ökologie und Verbreitung vonAldrovanda vesiculosa L.Biológia (Bratislava) 16: 561–573.Google Scholar
  12. Friday L.E. (1989): Rapid turnover of traps inUtricularia vulgaris LOecologia 80: 272–277.Google Scholar
  13. Helder R.J. (1988): A quantitative approach to the inorganic carbon system in aqueous media used in biological research: dilute solutions isolated from the atmosphere.Pl. Cell Environm. 11: 211–230.CrossRefGoogle Scholar
  14. Kamiński R. (1987a): Studies on the ecology ofAldrovanda vesiculosa L. I. Ecological differentiation ofA. vesiculosa population under the influence of chemical factors in the habitat.Ekol. Polska 35: 559–590.Google Scholar
  15. Kamiński R. (1987b): Studies on the ecology ofAldrovanda vesiculosa L. II. Organic substances, physical and biotic factors and the growth and development ofA. vesiculosa.Ekol. Polska 35: 591–609.Google Scholar
  16. Kamiński R., Adamec L. &Breckpot C. (1996): Report on recent sites ofAldrovanda vesiculosa (Droseraceae) in Poland.Fragm. Florist. Geobot. 41: 291–294.Google Scholar
  17. Komiya S. (1966): A report on the natural habitat ofAldrovanda vesiculosa found in Hanyu City.Amatores Herb. 27: 5–13.Google Scholar
  18. Mazrimas J.A. (1978):Aldrovanda. Carniv. Pl. Newslett. 7: 102–103.Google Scholar
  19. Newton R.J., Shelton D.R., Disharoon S. &Duffey J.E. (1978): Turion formation and germination inSpirodela polyrhiza.Amer. J. Bot. 65: 421–428.CrossRefGoogle Scholar
  20. Pekárková K. &Lischke P. (1974):Chemické metody analýzy vod (Chemical methods of water analyses). SNTL, Prague.Google Scholar
  21. Studnička M. (1984): Masožravá rostlina aldrovandka měchýřkatá (The carnivorous plantAldrovanda vesiculosa).Živa 32: 173–176.Google Scholar
  22. Talling J.F. (1973): The application of some electrochemical methods to the measurement of photosynthesis and respiration in fresh waters.Freshwater Biol. 3: 214–243.Google Scholar
  23. Walters S.M. (1979): Conservation of the European flora:Aldrovanda vesiculosa L, a documented case-history of a threatened species. In:Hedberg I. (ed.),Systematic botany, plant utilization and biosphere conservation, Almquist and Wiksell International, Stockholm, pp. 76–82.Google Scholar
  24. Winston R.D. &Gorham P.R. (1979): Turions and dormancy states inUtricularia vulgaris.Canad. J. Bot. 57: 2740–2749.CrossRefGoogle Scholar

Copyright information

© Institute of Botany, Academy of Sciences of the Czech Republic 1999

Authors and Affiliations

  • Lubomír Adamec
    • 1
  1. 1.Institute of BotanyAcademy of Sciences of the Czech Republic, Section of Plant EcologyTřeboňCzech Republic

Personalised recommendations