@inproceedings{inproceedingsbf520a7f, title = {Origin and dynamics of soil organic matter and vegetation changes in a forest-savanna ecotone, southern brazilian amazon region}, author = {Pessenda, Luiz Carlos Ruiz and Boulet, R and Rosolen, Vania and Aravena, R and Gouveia, S. E. M.}, year = {2000}, publisher = {World Scientific}, booktitle = {International Conference on Isotopes} }