Journal
ECOLOGY LETTERS
Volume 4, Issue 5, Pages 439-443Publisher
WILEY-BLACKWELL
DOI: 10.1046/j.1461-0248.2001.00238.x
Keywords
biodiversity mechanisms; delta C-13; mixtures; species diversity; stable carbon isotopes
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We investigated the role of water use in a Mediterranean grassland, in which diversity was experimentally manipulated, and a positive relationship was observed between plant species richness and productivity. Soil moisture patterns and stable carbon isotope ratios (PC) in leaves indicated greater water use by plants growing in species-rich mixtures compared to monocultures. These results suggest that complementarity or facilitation may be the mechanism responsible for the positive relationship between plant diversity and ecosystem processes.
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