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Warming prevents the elevated CO 2 -induced reduction in available soil nitrogen in a temperate, perennial grassland

Citation

R A Carran, Mark J Hovenden, Yui Osanai, P Theobald, Amity L Williams, and Karen E Wills, Warming prevents the elevated CO 2 -induced reduction in available soil nitrogen in a temperate, perennial grassland: .

Summary

Rising atmospheric carbon dioxide concentration ([CO2]) has the potential to stimulate ecosystem productivity and sink strength, reducing the effects of carbon (C) emissions on climate. In terrestrial ecosystems, increasing [CO2] can reduce soil nitrogen (N) availability to plants, preventing the stimulation of ecosystem C assimilation; a process known as progressive N limitation. Using ion exchange membranes to assess the availability of dissolved organic N, ammonium and nitrate, we found that CO2 enrichment in an Australian, temperate, perennial grassland did not increase plant productivity, but did reduce soil N availability, mostly by reducing nitrate availability. Importantly, the addition of 2 °C warming prevented this effect [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS export <br> On - Tue May 10 10:47:52 CDT 2011

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Title Citation Warming prevents the elevated CO 2 -induced reduction in available soil nitrogen in a temperate, perennial grassland

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