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Astronomy.media
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Wildfires in old-growth Amazon forest areas rose 152% in 2023, study shows
Publicado em 11 de maio de 2024
Although the rate of deforestation in the Brazilian Amazon fell in 2023, the region is faced with another challenge in the shape of fire affecting the native vegetation that has so far been spared destruction. An article published in the journal Global Change Biology warns that wildfires in old-growth forests rose 152% last year compared with 2022, despite a drop of 16% in the total number of fires throughout the Amazon and a 22% drop in deforestation.
In an analysis of satellite images, the [...]
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Study shows that Rio Grande Rise was once a giant mineral-rich tropical island near Brazil
Publicado em 02 fevereiro 2024A study led by scientists at the University of São Paulo (USP) in Brazil has shown that the Rio Grande Rise (RGR), a possibly continental basaltic plateau and chain of seamounts now submerged in the South Atlantic Ocean some 1,200 km from the coast of Brazil, was once a giant tropical island, rich in minerals and covered with vegetation. Geologists have dated sediments from the formation to between 45 million and 40 million years ago. The study, which involved almost 10 years of [...]ver notícia -
Legal mining sites in Brazil store 2.55 gigatonnes of carbon dioxide in vegetation and soil, study estimates
Publicado em 16 setembro 2023As global temperatures continue to reach all-time highs and discussions intensify about ways to mitigate the adverse effects of climate change, researchers at the University of São Paulo’s Luiz de Queiroz College of Agriculture (ESALQ-USP) in Brazil have reported the results of a scientific study showing that if all the country’s active legal mining sites continue to operate in the coming decades, emissions will total an estimated 2.55 gigatonnes of equivalent carbon dioxide [...]ver notícia