1. A global comparison of grassland biomass responses to CO2 and nitrogen enrichment;M Lee;Philos Trans R Soc Lond B BiolSc,2010
2. Millennium Ecosystem Assessment (MEA) (2005) Current state and trends. Washington, DC. 50 p.
3. Murphy JM, Sexton DMH, Jenkins GJ, Booth B, Brown C, et al. (2009) UK Climate Projections Science Report: Climate change projections. Met Office Hadley Centre, Exeter.
4. Relative effects of precipitation variability and warming on grassland ecosystem function;PA Fay;Biogeosciences Discussions,2011
5. Upscaling carbon fluxes over the Great Plains grasslands: Sinks and sources;L Zhang;J Geophys Res G: Biogeosci,2011