Plínio Barbosa de Camargo

TL;DR: Biometric observations confirmed the net loss of carbon but imply that it is a transient effect of recent disturbance superimposed on long-term balance, likely that carbon sequestration is lower than has been inferred from recent eddy covariance studies at undisturbed sites.

TL;DR: In this article, a model of belowground carbon cycling derived from measurements of carbon stocks and fluxes, and constrained using carbon isotopes, is used to predict C fluxes associated with conversion of deep-rooting forests to pasture and subsequent pasture management.

TL;DR: It is demonstrated that multi-year severe drought can substantially reduce Amazon forest carbon stocks and the prediction that severe drought decreases litterfall and wood production but potentially has multiple cancelling effects on belowground production within a 7-year partial throughfall exclusion experiment.

TL;DR: Carbon loss and subsequent emissions due to human disturbances remain largely unaccounted for in greenhouse gas inventories, but by comparing estimates of depleted carbon stocks in disturbed forests with Brazilian government assessments of the total forest area annually disturbed in the Amazon, it is shown that these emissions could represent up to 40% of the carbon loss from deforestation in the region.

TL;DR: In this article, the authors surveyed 19.75 ha along four 1-km transects of well-drained old-growth upland forest in the Tapajos National Forest near Santarem, Para ´, Brazil (2 8519 S, 548589 W) in order to assess carbon pool sizes, fluxes, and climatic controls on carbon balance.