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In a 2010 article published in PNAS, Claudio Gratton and Tim Meehan of the University of Wisconsin-Madison calculated the impact on bird biodiversity of planting millions of acres of marginal land with biofuel feedstock. Left: Brown shows areas with species declines of up to 50 percent on marginal land planted with corn for biofuels. Right: Blue shows species increases of up to 200 percent if marginal lands are planted with diverse grasslands as biofuel feedstocks.
Image credit: courtesy Claudio Gratton and Tim Meehan, University of Wisconsin-Madison
Image date: 2010
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