Oecologia

, Volume 88, Issue 3, pp 407–414

Crassulacean acid metabolism in Kalanchoë species collected in various climatic zones of Madagascar: a survey by δ13C analysis

Authors

  • Manfred Kluge
    • Institut für Botanik der Technischen Hochschule
  • Jeanne Brulfert
    • Lab.Biochim.Fonct.Membranes Veget.CNRS
  • Didier Ravelomanana
    • EES-Science, Lab.Phys.Veget.Université d'Antananarivo
  • Joseph Lipp
    • Institut für Hydrologie der GSF
  • Hubert Ziegler
    • Institut für Botanik der Technischen Universität
Original Papers

DOI: 10.1007/BF00317586

Cite this article as:
Kluge, M., Brulfert, J., Ravelomanana, D. et al. Oecologia (1991) 88: 407. doi:10.1007/BF00317586

Summary

The carbon isotope compositions of samples of Kalanchoë species collected at the natural stands in Madagascar were determined. The results suggest that all species of the genus Kalanchoë are capable of crassulacean acid metabolism. The observed δ13C values cover the whole range from −10 to −30‰. This high diversity of the δ13C values was found among the species of the genus as well as, in certain cases, within a single species. This suggest that the CAM patterns in Kalanchoë are generally very flexible. The δ13C values show a clear correlation with the climate of the habitats from where the samples derived. Values indicative of CO2 fixation taking place exclusively during the night were found in the dry regions of Madagascar, whereas δ13C values indicative of mixed CO2 fixation during night and day or of CO2 fixation entirely during the day are distributed in the humid zones.

Key words

Carbon isotope compositionCrassulacean acid metabolism (CAM)EcophysiologyKalanchoëMadagascar

Copyright information

© Springer-Verlag 1991