Amazônia em Chamas nº 12 – entendendo a relação entre o fogo e desmatamento em 2023
Apesar da redução de 50% no desmatamento na Amazônia, a pior seca em 125 anos aumentou o fogo em outras áreas do bioma, elevando a área queimada total para 10 milhões de hectares, 36% a mais do que em 2022. Dados foram publicados Nota Técnica Amazônia em Chamas nº...
Quantitative reconstruction of vegetation cover from modern pollen rain in the Cerrado biome of Brazil
Fossil pollen assemblages are an important tool to reconstruct vegetation variability at centennial and millennial-scales. However, in the Cerrado biome of Brazil, the influence of the local vegetation, the heterogeneity of the landscape and the accuracy of pollen...
Nitric and nitrous oxide fluxes from intensifying crop agriculture in the seasonally dry tropical Amazon–Cerrado border region
apid expansion and intensification of crop agriculture in the tropics may accelerate ecosystem losses of reactive nitrogen (N). We quantified emissions of nitric oxide (NO) and nitrous oxide (N2O) in forest, single-cropped soybean [Glycine max (L.) Merr.], and...
Riparian forests buffer the negative effects of cropland on macroinvertebrate diversity in lowland Amazonian streams
Riparian forests regulate stream ecosystems and biodiversity. Therefore, changes to riparian structure may threaten stream ecosystem function by triggering taxonomic and functional changes to aquatic communities. Because macroinvertebrate assemblages are sensitive...
The Latent Dirichlet Allocation model with covariates (LDAcov): A case study on the effect of fire on species composition in Amazonian forests
Understanding and predicting the effect of global change phenomena on biodiversity is challenging given that biodiversity data are highly multivariate, containing information from tens to hundreds of species in any given location and time. The Latent Dirichlet...
Amazônia em Chamas 7 – Desmatamento e fogo nas florestas públicas não destinadas
As florestas públicas não destinadas (FPND) fazem parte do Cadastro Nacional de Florestas Públicas, atualmente sob a responsabilidade do Serviço Florestal Brasileiro (SFB). Estas florestas ocupam uma superfície de 57,5 milhões de hectares, mais do que a área da...
Land Use Change Influences Ecosystem Function in Headwater Streams of the Lowland Amazon Basin
Intensive agriculture alters headwater streams, but our understanding of its effects is limited in tropical regions where rates of agricultural expansion and intensification are currently greatest. Riparian forest protections are an important conservation tool, but...