Runoff sources and land cover change in the Amazon: an end-member mixing analysis from small watersheds - Neill, Christopher; Chaves, Joaquin E.; Biggs, Trent; Deegan, Linda A.; Elsenbeer, Helmut; Figueiredo, Ricardo O.; Germer, Sonja; Johnson, Mark Scott; Lehmann, Johannes; Markewitz, Daniel; Piccolo, Marisa de Cassia (Biogeochemistry, 2011)