Inaddition,30%morewaterisrequiredto producethesameenergyfromsorghum(forethanolproduction)inTexasthaninNebraska(Dominguez-
Fausetal.,2009).
Biofuelproductionisalsolikelytoincreasetherisks and costsassociatedwithinvasivespecies.These
riskscanoccurasadirectconsequenceofthespecies andgenotypesusedtoproducebiofuels,butalsoas
a consequenceoftheinvasionofothertaxasomehowfosteredbythehabitatchangesassociatedwith
biofuelproduction(Sala etal.,2009)