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. Non-structural carbohydrates mediate seasonal water stress across Amazon forests.

Non-structural carbohydrates (NSC) are major substrates for plant metabolism and have been implicated in mediating drought-induced tree mortality. Despite their significance, NSC dynamics in tropical forests remain little studied. We present leaf and branch NSC data for 82 Amazon canopy tree species...
  • por Portal Padrão
  • publicado
  • 07/07/2021
  • 4:19 PM

Advancing a toolkit of diverse futures approaches for global environmental assessments

Global Environmental Assessments (GEAs) are in a unique position to influence environmental decision-making in the context of sustainability challenges. To do this effectively, however, new methods are needed to respond to the needs of decision-makers for a more integrated, contextualized and goal-s...
  • por Portal Padrão
  • publicado
  • 07/07/2021
  • 3:58 PM

Is domestic agricultural production sufficient to meet national food nutrient needs in Brazil?

Reducing the impacts of agriculture on the environment is one of the greatest challenges of this century. In Brazil, it is often argued that more land use change is needed to achieve food security. However, analyses seeking to understand the dynamics between agricultural production for exports and f...
  • por Portal Padrão
  • publicado
  • 07/07/2021
  • 3:47 PM

Case Studies on Concentric Gravity Waves Source using Lightning Flash Rate, Brightness Temperature and Backward Ray Tracing at São Martinho da Serra (29.44°S, 53.82°W).

We relate the spatial and temporal distribution of lightning flash rates and cloud top brightness temperature (CTBT) to concentric atmospheric gravity wave (CGW) events observed at the Southern Space Observatory (SSO) in São Martinho da Serra (29.44°S, 53.82°W, 488.7m) in southern Brazil. The ...
  • por Portal Padrão
  • publicado
  • 07/07/2021
  • 2:16 PM

Extreme Rainfall and Hydro-Geo-Meteorological Disaster Risk in 1.5, 2.0, and 4.0°C Global Warming Scenarios: An Analysis for Brazil.

With the inclusion of demographic characteristics of the population living in vulnerable areas, a combination of empirical and climate models was used to project changes to climate and in hydro-geo-meteorological disasters in Brazil. This study investigated the effect of extreme rainfall changes and...
  • por Portal Padrão
  • publicado
  • 07/07/2021
  • 1:09 PM

Smoldering characteristics of high bulk density peat.

Low-density peats from many countries have long been studied by many authors. They are mostly forest and moss peats. Different peat types, from different locations in the world, may present degradation behavior that differs significantly. Bulk density, which is one the most important physical parame...
  • por Portal Padrão
  • publicado
  • 07/07/2021
  • 11:03 AM

Fatores associados à distribuição da temperatura das superfícies em áreas urbanas: zonas climáticas locais e características espectrais.

O aquecimento global torna necessário o benchmarking do tecido urbano para desenvolver políticas que possam promover a resiliência urbana ao calor. O objetivo desta pesquisa é identificar padrões do tecido urbano que produzem a retroalimentação negativa do sistema climático urbano naturalmen...
  • por Portal Padrão
  • publicado
  • 07/07/2021
  • 10:15 AM

When the whole is less than the sum of all parts – Tracking global-level impacts of national sustainability initiatives.

The United Nations Sustainable Development Goals (SDGs) are described as integrated and indivisible, where sustainability challenges must be addressed across sectors and scales to achieve global-level sustainability. However, SDG monitoring mostly focuses on tracking progress at national-levels, for...
  • por Portal Padrão
  • publicado
  • 07/07/2021
  • 10:14 AM

Hybrid power generation for increasing water and energy securities during drought: Exploring local and regional effects in a semi-arid basin.

Reservoirs of hydropower plants (HPP) can amend water, energy, and food security in semi-arid regions. However, during severe droughts, the priority of energy demand leads to critical conditions of water availability. To reduce water use for energy, one possible measure is the adoption of solar powe...
  • por Portal Padrão
  • publicado
  • 06/07/2021
  • 11:02 AM

Obtaining the daily actual evapotranspiration through remote sensing techniques application in Brazilian Semiarid.

Large volumes of water are released to the atmosphere through evaporation from soil and transpiration from vegetation, constituting evapotranspiration (ET). Estimating the water consumption in vegetated areas is important for the management and rational use of this resource. For this study were proc...
  • por Portal Padrão
  • publicado
  • 06/07/2021
  • 10:58 AM

Assessment of CMIP6 Performance and Projected Temperature and Precipitation Changes Over South America.

We evaluate the performance of a large ensemble of Global Climate Models (GCMs) from the Coupled Model Intercomparison Project Phase 6 (CMIP6) over South America for a recent past reference period and examine their projections of twenty-first century precipitation and temperature changes. The future...
  • por Portal Padrão
  • publicado
  • 06/07/2021
  • 10:19 AM

Phytoplankton community in a tropical estuarine gradient after an exceptional harmful bloom of Akashiwo sanguinea (Dinophyceae) in the Todos os Santos Bay.

The objective of this study was to evaluate variations in the composition and abundance of the phytoplankton community after an exceptional harmful bloom of Akashiwo sanguinea that occurred in Todos os Santos Bay (BTS) in early March, 2007. Samples were collected every ten days, between April, 2007 ...
  • por Portal Padrão
  • publicado
  • 06/07/2021
  • 10:17 AM