Secas amplificam perdas de umidade do solo em florestas queimadas do Sudeste da Amazônia
Secas, queimadas e desmatamento fazem com que florestas estoquem mais água do solo como forma de sobreviver, tornando esses ambientes mais secos, suscetíveis ao fogo e diminuindo as chuvas nas regiões próximas. Dados foram divulgados no artigo “Secas amplificam...
Reforma do Código Florestal: qual o caminho para o consenso?
Documento apresenta contribuições para o Relatório da Comissão de Meio Ambiente do Senado Federal sobre a reforma do Código Florestal Brasileiro.
Natural and drought scenarios in an east central Amazon forest: Fidelity of the Community Land Model 3.5 with three biogeochemical models
Recent development of general circulation models involves biogeochemical cycles: flows of carbon and other chemical species that circulate through the Earth system. Such models are valuable tools for future projections of climate, but still bear large uncertainties...
The effects of deforestation and climate variability on the streamflow of the Araguaia River, Brazil
Deforestation changes the hydrological, geomorphological, and biochemical states of streams by decreasing evapotranspiration on the land surface and increasing runoff, river discharge, erosion and sediment fluxes from the land surface. Deforestation has removed...
The 2010 Amazon Drought
In 2010, dry-season rainfall was low across Amazonia, with apparent similarities to the major 2005 drought. We analyzed a decade of satellite-derived rainfall data to compare both events. Standardized anomalies of dry-season rainfall showed that 57% of Amazonia had...
Carbon Inputs and Water Uptake in Deep Soils of an Eastern Amazon Forest
Rooting depth affects soil profiles of water uptake and carbon inputs. Here we explore the importance of deep roots in a mature tropical forest of eastern Amazonia, where a throughfall exclusion experiment was conducted to test the resilience of the forest to...
Conversion to soy on the Amazonian agricultural frontier increases streamflow without affecting stormflow dynamics
Large-scale soy agriculture in the southern Brazilian Amazon now rivals deforestation for pasture as the region's predominant form of land use change. Such landscape-level change can have substantial consequences for local and regional hydrology, but these effects...