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Comment
. 2007 Jun 15;316(5831):1567; author reply 1567.
doi: 10.1126/science.1139388.

Comment on "Carbon-negative biofuels from low-input high-diversity grassland biomass"

Michael P Russelle  1 , R Vance Morey, John M Baker, Paul M Porter, Hans-Joachim G Jung
Affiliations
Comment

Comment on "Carbon-negative biofuels from low-input high-diversity grassland biomass"

Michael P Russelle et al. Science. .

Abstract

Tilman et al. (Reports, 8 December 2006, p. 1598) argued that low-input high-diversity grasslands can provide a substantial proportion of global energy needs. We contend that their conclusions are not substantiated by their experimental protocol. The authors understated the management inputs required to establish prairies, extrapolated globally from site-specific results, and presented potentially misleading energy accounting.

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