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CO2 emissions in the Amazon: are bottom-up estimates from land use and cover datasets consistent with top-down estimates based on atmospheric measurements?

Amazon forests are the largest forests in the tropics and play a fundamental role for regional and global ecosystem service provision. However, they are under threat primarily from deforestation. Amazonia's carbon balance trend reflects the condition of its forests. There are different approaches to...
  • por Portal Padrão
  • publicado
  • 05/08/2024
  • 4:36 PM

Investigation of landslide hazard areas in the municipality of Cunha (Brazil) and climate projections from 2024 to 2040.

Climate change can modify the frequency and intensity of extreme rainfall across the globe, leading to changes in hazards posed by rainfall-induced landslides. In Brazil, an example of a location with a high occurrence of landslides and with few studies on the subject is the municipality of Cunha, l...
  • por Portal Padrão
  • publicado
  • 05/08/2024
  • 4:33 PM

Nature-based solutions are critical for putting Brazil on track towards net-zero emissions by 2050.

Most of the world's nations (around 130) have committed to reaching net-zero carbon dioxide or greenhouse gas (GHG) emissions by 2050, yet robust policies rarely underpin these ambitions. To investigate whether existing and expected national policies will allow Brazil to meet its net-zero GHG emissi...
  • por Portal Padrão
  • publicado
  • 05/08/2024
  • 4:29 PM

Assessment of soil loss susceptibility in geodetic landmarks for the past and future climate change scenarios.

Geodetic landmarks (GLs) are essential for obtaining precise height, horizontal coordinates, and the Earth's gravity field. This study aims to assess the soil susceptibility of GLs for past, present, and future scenarios, considering the projected anthropogenic effect from Coupled Model Intercompari...
  • por Portal Padrão
  • publicado
  • 05/08/2024
  • 4:26 PM

Asphyxiation of Metarhizium robertsii during mycelial growth produces conidia with increased stress tolerance via increased expression of stress-related genes.

Little is known about the impact of hypoxia and anoxia during mycelial growth on tolerance to different stress conditions of developing fungal conidia. Conidia of the insect-pathogenic fungus Metarhizium robertsii were produced on potato dextrose agar (PDA) medium under normoxia (control = normal ox...
  • por Portal Padrão
  • publicado
  • 05/08/2024
  • 4:24 PM

Optical Emission Studies in Association with TGFs at the Telescope Array detector.

The Telescope Array (TA) detector located in the southwestern desert of the State of Utah is the largest ultra-high energy cosmic ray experiment in the Northern Hemisphere. The TA detector has been a unique facility for studying downward TGFs and has reported several discoveries over the past few ye...
  • por Portal Padrão
  • publicado
  • 10/07/2024
  • 2:09 PM

Optical Emission Studies in Association with TGFs at the Telescope Array detector.

The Telescope Array (TA) detector located in the southwestern desert of the State of Utah is the largest ultra-high energy cosmic ray experiment in the Northern Hemisphere. The TA detector has been a unique facility for studying downward TGFs and has reported several discoveries over the past few ye...
  • por Portal Padrão
  • publicado
  • 10/07/2024
  • 2:08 PM

Variação da precipitação pluvial e vazão do rio Paraíba do Meio, Alagoas.

No Brasil e no mundo, as bacias de drenagem são afetadas não apenas pelas mudanças ambientais diretas, mas também por influências combinadas de várias atividades humanas e pelos impactos da pluviosidade, acarretando em mudanças na vazão e propriedades físico-químicas dos rios (OMETTO; MART...
  • por Portal Padrão
  • publicado
  • 10/07/2024
  • 1:33 PM

Variação da concentração de parâmetros de qualidade da água no rio Paraíba do Meio, Alagoas, e sua conformidade com a resolução do CONAMA 357/2005

...
  • por Portal Padrão
  • publicado
  • 10/07/2024
  • 1:32 PM

High-resolution aboveground carbon changes in the Brazilian Amazon using repeated airborne lidar.

The Brazilian Amazon is a hotspot of deforestation and forest degradation caused by logging, fire, and deforestation-associated fragmentation and edge effects. While the extent of deforestation and associated carbon losses are relatively well known, the quantification of the carbon losses caused by ...
  • por Portal Padrão
  • publicado
  • 10/07/2024
  • 1:30 PM

Quantifying carbon loss at forests degraded by logging with repeated airborne Lidar data in the Brazilian Amazon.

Forest degradation is a major issue and a key component of tropical forests and carbon emissions. In this study, we use repeated Airborne Laser Scanning (ALS) data to quantify carbon losses in degraded forests due to logging at the Mato Grosso state rainforests. We identified logged areas using Plan...
  • por Portal Padrão
  • publicado
  • 10/07/2024
  • 1:17 PM

Proposal of an Agricultural Vulnerability Stochastic Model for the Rural Population of the Northeastern Region of Brazil.

Agriculture is the worlds main economic activity. According to the Intergovernmental Panel on Climate Change, this activity is expected to be impacted by drought. In the Northeast region of Brazil (NEB), most agricultural activity is carried out by small rural communities. Local socio-economic data ...
  • por Portal Padrão
  • publicado
  • 10/07/2024
  • 1:14 PM