Tyranny of trees in grassy biomes - Veldman, Joseph W.; Overbeck, Gerhard E.; Negreiros, Daniel; Mahy, Gregory; Le Stradic, Soizig; Fernandes, G. Wilson; Durigan, Giselda; Buisson, Elise; Putz, Francis E.; Bond, William J. (Science (American Association for the Advancement of Science), 2015)