Photosynthetic parameters from two contrasting woody vegetation types in West Africa

Meir, Patrick; Levy, Peter E.; Grace, John; Jarvis, Paul G.. 2007 Photosynthetic parameters from two contrasting woody vegetation types in West Africa. Plant Ecology, 192 (2). 277-287.

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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 V-cmax 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.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry > BG01 Measuring and modelling trace gas, aerosol and carbon > BG01.2 Carbon
UKCEH and CEH Sections/Science Areas: Billett (to November 2013)
ISSN: 1385-0237
Additional Information. Not used in RCUK Gateway to Research.: 207SB Times Cited:0 Cited References Count:62
Additional Keywords: gas exchange, hapex-sahel, tropical rain forest, Cameroon photosynthesis, succession, tropical rain-forest, leaf, nitrogen concentration, carbon gain, temperature response, nutrient limitation, successional status, CO2 assimilation, c-3 plants, canopy, leaves
NORA Subject Terms: Ecology and Environment
Date made live: 02 Apr 2008 15:41 +0 (UTC)

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