Variation in potential for isoprene emissions among Neotropical forest sites - Harley, Peter; Vasconcellos, Pérola de Castro; Vierling, Lee; Pinheiro, Carlos Cleomir de S.; Greenberg, James; Guenther, Alex; Klinger, Lee; Almeida, Samuel Soares; Neill, David; Baker, Tim; Phillips, Oliver; Malhi, Yadvinder (Global Change Biology, 2004)