Fogo no Cerrado em 2024: retrato de janeiro a setembro
O bioma Cerrado é de extrema importância ecológica e econômica, desempenhando um papel crucial na regulação hídrica (Sawyer et al. 2017), alimentando as principais bacias hidrográficas do país, além de ser a savana tropical com maior biodiversidade do mundo (Myers...
Solving Brazil's land use puzzle: Increasing production and slowing Amazon deforestation
Brazil has become an agricultural powerhouse, producing roughly 30 % of the world’s soy and 15 % of its beef by 2013 – yet historically much of that growth has come at the expense of its native ecosystems. Since 1985, pastures and croplands have replaced nearly 65...
Biological Nitrogen Fixation Does Not Replace Nitrogen Losses After Forest Fires in the Southeastern Amazon
Tropical forest fires have become more common due to interactions between deforestation, land clearing, and drought. Forest recovery following fires may be limited by nitrogen. Biological nitrogen fixation (BNF) is the main pathway for new nitrogen (N) to enter...
Droughts Amplify Differences Between the Energy Balance Components of Amazon Forests and Croplands
Droughts can exert a strong influence on the regional energy balance of the Amazon and Cerrado, as can the replacement of native vegetation by croplands. What remains unclear is how these two forcing factors interact and whether land cover changes fundamentally...
Thinner bark increases sensitivity of wetter Amazonian tropical forests to fire
Understory fires represent an accelerating threat to Amazonian tropical forests and can, during drought, affect larger areas than deforestation itself. These fires kill trees at rates varying from < 10 to c. 90% depending on fire intensity, forest disturbance...
Áreas Protegidas do Brasil – Patrimônio ameaçado
A criação, reconhecimento e manutenção de áreas protegidas atendem a compromissos internacionais no âmbito das convenções das Nações Unidas sobre Diversidade Biológica e do Clima, para deter a perda de biodiversidade no planeta e conter os efeitos do aquecimento...
Mapeamento das diferentes formações de vegetação nativa do Cerrado nos últimos 30 anos
O Cerrado é o segundo maior bioma sul-americano e a savana mais rica e ameaçada do mundo. Caracterizado por um mosaico de formações vegetais naturais (florestas, savanas e campos) com influência da sazonalidade climática, a classificação desse bioma por imagens de...