Tools for communicating agricultural drought over the Brazilian Semiarid using the soil moisture index.
Soil moisture over the Brazilian semiarid region is presented in different visualizations that highlight spatial, temporal and short-term agricultural risk. The analysis used the Soil Moisture Index (SMI), which is based on a normalization of soil moisture by field capacity and wilting point. The in...
por Portal Padrão
publicado
05/12/2018
2:42 PM
Distribution modelling and multi-scale landscape connectivity highlight important areas for the conservation of savannah elephants.
Habitat connectivity is the milestone towards species' long-term persistence, especially considering impacts of climate change and human activities. Here, we examined the potential implications of climate change and human pressure on connectivity among habitat patches, aiming to identify priority ar...
por Portal Padrão
publicado
05/12/2018
2:41 PM
Environmental and biological controls on seasonal patterns of isoprene above a rain forest in central Amazonia.
The Amazon rain forest is a major global isoprene source, but little is known about its seasonal ambient concentration patterns. To investigate the environmental and phenological controls over isoprene seasonality, we measured isoprene mixing ratios, concurrent meteorological data, and leaf area ind...
por Portal Padrão
publicado
05/12/2018
2:33 PM
Individual tree crown delineation in a highly diverse tropical forest using very high resolution satellite images.
Mapping tropical tree species at landscape scales to provide information for ecologists and forest managers is a new challenge for the remote sensing community. For this purpose, detection and delineation of individual tree crowns (ITCs) is a prerequisite. Here, we present a new method of automatic ...
por Portal Padrão
publicado
05/12/2018
2:30 PM
A Amazônia no antropoceno.
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por Portal Padrão
publicado
05/12/2018
2:28 PM
Compliance to Brazil’s forest code will not protect biodiversity and ecosystem services.
In striking contrast to heartening events in the adjacent Amazon, Brazil's Cerrado biome has seen continued deforestation over the past decade. Though approved in 2012, no study evaluated the impacts of new Brazilian Forest Code (FC) revision on biodiversity and ecosystem services. Here, we report t...
por Portal Padrão
publicado
05/12/2018
2:27 PM
Análise das interações entre dados climáticos e o processo de desertificação no núcleo de desertificação de Cabrobó-PE, Brasil.
No presente estudo avaliou-se a dinâmica das mudanças de usos e cobertura da terra no núcleo de desertificação de Cabrobó-PE, a partir de abordagem que inclui a variação espaço-temporal de dados ambientais e de clima. Para a execução do trabalho, utilizaram-se o software ArcGis e a Plataf...
por Portal Padrão
publicado
05/12/2018
2:26 PM
The Brazilian Earth System Model version 2.5: evaluation of its CMIP5 historical simulation.
The performance of the coupled ocean-atmosphere component of the Brazilian Earth System Model version 2.5 (BESM-OA2.5) simulating the historical period 1850-2005 is evaluated. Following climate model validation procedure, in which the atmospheric and oceanic main variabilities are validated against ...
por Portal Padrão
publicado
05/12/2018
2:25 PM
Análise comparativa de indicadores de sustentabilidade entre os estados da Amazônia Legal.
Neste trabalho, buscou-se elaborar um panorama da sustentabilidade dos nove estados da Amazônia Legal, com base em cinco dimensões, 13 temas e 54 indicadores que compõem o Índice de Desenvolvimento Sustentável IDS. Os resultados indicam que há diferenças nos níveis de sustentabilidade dos es...
por Portal Padrão
publicado
05/12/2018
2:24 PM
Desertification trends in the Northeast of Brazil over the period 2000–2016.
Information about changes in land use and land cover is useful to address issues related to drylands management, as well as to support decision-making related to the sustainable use of soils. Since drylands are frequently affected by accelerated soil erosion, land degradation and desertification ass...
por Portal Padrão
publicado
05/12/2018
2:20 PM
Climate change impact on the potential yield of Arabica coffee in southeast Brazil.
The Intergovernmental Panel on Climate Change (IPCC) projections of global mean temperature rises are worrisome for coffee crop due to the intolerance of the Arabica species to high air temperature variations. The crop has a large participation in the Brazilian trade balance; therefore, in this stud...
por Portal Padrão
publicado
05/12/2018
2:19 PM
Relationship between ionospheric plasma bubble occurrence and lightning strikes over the Amazon region.
The vertical coupling between the troposphere and the ionosphere presents some remarkable features. Under intense tropospheric convection, gravity waves may be generated, and once they reach the ionosphere, these waves may seed instabilities and spread F and equatorial plasma bubble events may take ...
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