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
19/06/2023
6:18 PM
U-BAD: Ultimate Burned Area Detection.
Here, we evaluated the combination of five satellites/sensors for improving burned area (BA) detection over the Amazon basin. Using a data set of 2,400 burn/no burn points by visual inspection in 2016, we investigated several spectral indices and ingested them into data mining algorithms to evaluate...
por Portal Padrão
publicado
19/06/2023
6:13 PM
Taxa de crescimento da biomassa acima do solo em florestas secundárias amazônicas estimada por sensoriamento remoto LiDAR e hiperespectral.
A compreensão da taxa de crescimento da biomassa acima do solo (BAS) em florestas sob regeneração natural é essencial para mensurar o sequestro de carbono florestal e auxiliar na mitigação das mudanças climáticas. Neste estudo, estimamos a BAS em 57 amostras de florestas secundárias amazôn...
por Portal Padrão
publicado
19/06/2023
6:09 PM
Moisture origins of the Amazon carbon source region.
The southeastern Amazon has recently been shown to be a net carbon source, which is partly caused by drying conditions. Drying depends on a number of factors, one of which is the land cover at the locations where the moisture has originated as evaporation. Here we assess for the first time the origi...
por Portal Padrão
publicado
19/06/2023
6:06 PM
A decentralized approach to model national and global food and land use systems.
The achievement of several sustainable development goals and the Paris Climate Agreement depends on rapid progress towards sustainable food and land systems in all countries. We have built a flexible, collaborative modeling framework to foster the development of national pathways by local research t...
por Portal Padrão
publicado
19/06/2023
6:03 PM
The role of ecosystem transpiration in creating alternate moisture regimes by influencing atmospheric moisture convergence.
The terrestrial water cycle links the soil and atmosphere moisture reservoirs through four fluxes: precipitation, evaporation, runoff, and atmospheric moisture convergence (net import of water vapor to balance runoff). Each of these processes is essential for sustaining human and ecosystem well-bein...
por Portal Padrão
publicado
19/06/2023
6:01 PM
Multiple controls on carbon dioxide sequestration in the beagle channel (Southern Patagonia) in early fall.
Subpolar coastal waters are key hotspots in the global carbon cycle. However, the small-scale distribution of partial pressure of carbon dioxide (pCO2) in these environments and the physical and biological controls underlying this variability are still poorly understood. Here, we examine simultaneou...
por Portal Padrão
publicado
19/06/2023
5:59 PM
Land use and green crime: assessing the edge effect.
Green crimes are violations of environmental laws that aim to protect human well-being, natural resources, and ecosystems. Brazil has recorded an increase in green crimes in recent years. In this study, we used Spatial Durbin and other regression models to analyze the relationship between land use a...
por Portal Padrão
publicado
01/06/2023
7:54 PM
Resiliência comunitária a desastres em municípios de pequeno porte com altos índices de desenvolvimento humano municipal.
No Brasil, os municípios de pequeno porte são afetados por impactos de desastres em diferentes níveis, diante de suas distintas características econômicas e sociais. Para a redução de danos materiais e humanos, é necessária uma abordagem que considere múltiplas dimensões de resiliência e...
por Portal Padrão
publicado
01/05/2023
9:17 PM
Climate related disasters in Brazil through a gender lens: Sobrevidas@ and female voices.
Worldwide, disasters are recognized to be gender sensitive. Women play a vital part of disaster response efforts, developing specific knowledge and skills in contexts of threat, although the prevailing social imbalances and lower socio-economic status influence and make unequal and unfair women's re...
por Portal Padrão
publicado
01/05/2023
9:16 PM
Análise de eventos extremos sob cenários de mudanças climáticas na bacia do rio Itajaí-Açu.
Mudanças climáticas afetam o ciclo hidrológico e influenciam significativamente o uso dos recursos hídricos. O grande número de eventos extremos e a extensão prolongada no espaço e no tempo destes são indicativos de que as mudanças climáticas estão se intensificando nas últimas décadas....
por Portal Padrão
publicado
01/05/2023
9:14 PM
The influence of forest cover change of decadal land surface temperature changes in the Brazilian Amazon.
Deforestation disrupts ecosystem services provided by forests at a regional scale, such as surface temperature regulation. This study evaluated how changes in land surface temperature (LST) from 2003 to 2021 across the Brazilian Amazon varied according to the rate of forest cover change and the amou...
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