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Eurasia Review (Espanha)
Em 2024: 30 notícias
Desde 1995: 133 notícias
Study proposes refinement of models to project ecosystem services in montane forests
Publicado em 01 agosto 2023
Tropical mountain ecosystems, including montane forests, are relatively little studied, yet they are home to significant biodiversity and provide important ecosystem services, such as water supply and participation in regulation of temperature and regional and global climate. The data available on mountain vegetation and its dynamics falls far short of what is needed to simulate with confidence its interaction with the atmosphere in response to climate change.
A new study published in the [...]
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Amazon Dark Earth Boosts Tree Growth As Much As Sixfold
Publicado em 01 agosto 2023A type of soil called terra preta da Amazônia, or Amazon dark earth (ADE), promotes faster growth of trees and enhances their development in qualitative terms, according to an article published in the journal Frontiers in Soil Science. The findings reported in the article resulted from studies supported by FAPESP (projects 20/08927-0, 18/19000-4 and 14/50320-4 ) under the aegis of its Biodiversity, Characterization, Conservation, Restoration and Sustainable Use Program ( BIOTA [...]ver notícia -
Luzio, who lived in São Paulo 10,000 years ago, was Amerindian like Indigenous people now, DNA reveals
Publicado em 31 julho 2023An article to be published in Nature Ecology & Evolution reveals that Luzio, the oldest human skeleton found in São Paulo state (Brazil), was a descendant of the ancestral population that settled the Americas at least 16,000 years ago and gave rise to all present-day Indigenous peoples, such as the Tupi. Based on the largest set of Brazilian archeological genomic data, the study reported in the article also offers an explanation for the disappearance of the oldest coastal [...]ver notícia -
Brazilian Amazon: Deforestation In Indigenous Territories Caused Emission Of 90 Million Metric Tons Of CO2 In 2013-21
Publicado em 01 julho 2023Deforestation in Indigenous Territories (ITs) in the Brazilian Amazon caused the emission of 96 million metric tons of carbon dioxide (CO2) between 2013 and 2021, modifying the forest’s role as a carbon sink in these areas. Emissions in the last three years of the period (2019-21) accounted for 59%, reflecting intensification of the destruction. The data comes from a research project led by Brazilians and published in an article in Scientific Reports. The authors show that [...]ver notícia -
Study Points Out Errors In Illustrations Of One Of Most Famous Scientific Experiments
Publicado em 22 maio 2023Illustrations of scientific experiments play a fundamental role in both science education and the dissemination of scientific knowledge to the general public. Confirming the adage that “a picture is worth a thousand words,” these depictions of famous experiments remain in the minds of those who study them and become definitive versions of the scientific process. Archimedes in the bath discovering the law of buoyancy; Newton refracting sunlight with a prism and defining the [...]ver notícia -
Temperature Of Solar Flares Helps Understand Nature Of Solar Plasma
Publicado em 17 maio 2023The Sun’s rotation produces changes in its magnetic field, which flips completely every 11 years or so, triggering a phase of intense activity. Solar flares – huge eruptions from the surface of the Sun lasting minutes or hours – emit intense bursts of particles and high levels of electromagnetic radiation. The release of energy during solar flares heats the chromosphere, causing almost full ionization of the atomic hydrogen present in the region. The chromosphere is a thin [...]ver notícia -
Secret Behind Amazonian ‘Dark Earth’ Could Help Speed Up Forest Restoration Across Globe
Publicado em 14 maio 2023Between approximately 450 BCE and 950 CE, millions of Amerindian people living in today’s Amazonia transformed the originally poor soil through various processes. Over many human generations, soils were enriched with charcoal from their low-intensity fires for cooking and burning refuse, animal bones, broken pottery, compost, and manure. The result is Amazonian dark earth (ADE) or terra preta, exceptionally fertile because rich in nutrients and stable organic matter derived from charcoal, [...]ver notícia -
Study links poor diet to 14 million cases of type 2 diabetes globally
Publicado em 17 abril 2023A research model of dietary intake in 184 countries, developed by researchers at the Friedman School of Nutrition Science and Policy at Tufts University, estimates that poor diet contributed to over 14.1 million cases of type 2 diabetes in 2018, representing over 70% of new diagnoses globally. The analysis, which looked at data from 1990 and 2018, provides valuable insight into which dietary factors are driving type 2 diabetes burden by world region. The study was published April 17 in the [...]ver notícia -
Trees In Savanna Areas Of Cerrado Produce Three Times More Bark Than Species In Forest Areas
Publicado em 15 abril 2023In tropical regions of the planet, savannas and forests often coexist in the same area and are exposed to the same climate. An example is the Cerrado, a Brazilian biome that includes several types of vegetation, from broad-leaved and sclerophyllous in dense woodland or shrubland (cerrado sensu stricto) to semi-evergreen in closed-canopy forest (cerradão), as well as grassland with scattered shrubs (campo sujo) and even semi-deciduous seasonal forest. Areas of cerradão develop [...]ver notícia -
Emerging Deforestation Frontier In Southwestern Amazon Sees Increase In Burnings
Publicado emA swathe of the Amazon Rainforest almost twice the size of Luxembourg was destroyed by fire between 2003 and 2019. The area is in the southwest of Amazonas state, in Brazil’s North region, and includes parts of nine municipalities with some of the worst sustainable development indicators in the country. Deforestation had been increasing in the area, largely owing to illegal logging and other activities linked to agriculture along two highways that run through it. In the period 2003-19, [...]ver notícia