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Tree responses to rising CO2in field experiments: implications for the future forest

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      MORE EFFICIENT PLANTS: A Consequence of Rising Atmospheric CO2?

      The primary effect of the response of plants to rising atmospheric CO2 (Ca) is to increase resource use efficiency. Elevated Ca reduces stomatal conductance and transpiration and improves water use efficiency, and at the same time it stimulates higher rates of photosynthesis and increases light-use efficiency. Acclimation of photosynthesis during long-term exposure to elevated Ca reduces key enzymes of the photosynthetic carbon reduction cycle, and this increases nutrient use efficiency. Improved soil-water balance, increased carbon uptake in the shade, greater carbon to nitrogen ratio, and reduced nutrient quality for insect and animal grazers are all possibilities that have been observed in field studies of the effects of elevated Ca. These effects have major consequences for agriculture and native ecosystems in a world of rising atmospheric Ca and climate change.
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        A meta-analysis of elevated CO 2 effects on woody plant mass, form, and physiology

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          Crop responses to carbon dioxide doubling: a literature survey

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            Author and article information

            Journal
            PLCEDV
            Plant, Cell and Environment
            Plant Cell Environ
            Wiley-Blackwell
            0140-7791
            1365-3040
            June 1999
            June 1999
            : 22
            : 6
            : 683-714
            10.1046/j.1365-3040.1999.00391.x
            © 1999

            http://doi.wiley.com/10.1002/tdm_license_1.1

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