Plant Ecology

, Volume 192, Issue 2, pp 277–287

Photosynthetic parameters from two contrasting woody vegetation types in West Africa

  • Patrick Meir
  • Peter E. Levy
  • John Grace
  • Paul G. Jarvis
Original Paper

DOI: 10.1007/s11258-007-9320-y

Cite this article as:
Meir, P., Levy, P.E., Grace, J. et al. Plant Ecol (2007) 192: 277. doi:10.1007/s11258-007-9320-y
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Abstract

Measurements of leaf gas exchange were made in contrasting wooded ecosystems in West Africa. Measurements were made on 10 species: seven from humid rain forest in Cameroon and three from the semi-arid Sahelian zone in Niger. For each species, two models of photosynthesis were fitted: the first based on a rectangular hyperbolic response to photosynthetic photon flux density (Q), and the second the biochemical model of Farquhar et al. (1980). In both communities, the species studied could be divided into those characteristic of early and late successional stages, but photosynthetic parameters were not closely related to successional stage. The data identified significant relationships between Vcmax and leaf nutrient (N and P) content when expressed on an area basis. Variation in leaf mass per unit area correlated with canopy exposure and dominated the leaf nutrient signal. Statistical analysis suggested weakly that leaf gas exchange was more limited by P than N at the rain forest site.

Keywords

Gas exchangeHAPEX-SahelTropical rain forestCameroonPhotosynthesisSuccession

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Patrick Meir
    • 1
  • Peter E. Levy
    • 2
  • John Grace
    • 1
  • Paul G. Jarvis
    • 1
  1. 1.School of GeosciencesUniversity of EdinburghEdinburghScotland, UK
  2. 2.Centre for Ecology and HydrologyMidlothianScotland, UK