Veículo
Environmental News Network (EUA)
Em 2023: 8 notícias
Desde 1995: 55 notícias
Climate change may affect 40% of biodiversity in semi-arid portion of Brazil's Northeast by 2060
Publicado em 21 setembro 2023
The consequences of climate change in the Caatinga, the semi-arid shrubland and thorn forest biome in Brazil’s Northeast region, will include species loss, substitution of rare plants by more generalist vegetation, biotic homogenization (in which previously distinct plant communities become progressively more similar), increasing aridity, and even desertification in some areas.
These are some of the findings of a study reported in the Journal of Ecology by Brazilian researchers [...]
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Hydroelectric Power Plants in Brazil Threaten Turtles That Depend on Rapids, Study Warns
Publicado em 15 setembro 2023A research project supported by FAPESP shows that the construction of new hydroelectric power plants in Brazil's South region could have an impact A research project supported by FAPESP shows that the construction of new hydroelectric power plants in Brazil’s South region could have an impact on more than 30% of the habitat of Phrynops williamsi, the Williams’ side-necked turtle. A research project supported by FAPESP shows that the construction of new hydroelectric [...]ver notícia -
Climate change-induced drought may transform parts of the Amazon’s rainforests into savannas
Publicado em 29 agosto 2023Rutgers-led study indicates future changes, including a reduction to Earth’s ability to store carbon. A portion of Amazonian lowland rainforest – areas critical to absorbing carbon dioxide and buffering climate change – may morph over time into dry, grassy savannas, according to a Rutgers-led study. The report, published in the scientific journal Proceedings of the National Academy of Sciences, described a new understanding of how alternating flooding in the wet season [...]ver notícia -
Study proposes refinement of models to project ecosystem services in montane forests
Publicado em 31 julho 2023Tropical 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. 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 [...]ver notícia -
Brazilian Coast is Warmer and is Having More Frequent Extreme Temperature Events, Study Shows
Publicado em 18 julho 2023The Brazilian coast, especially in the South and Southeast regions, is already suffering from the impact of climate change, with increasingly extreme surface air temperatures and more frequent swings from heat to cold and back. This is one of the results of a study described in an article published in Scientific Reports, a journal of the Springer Nature group. On the coast of Espírito Santo, Rio Grande do Sul and São Paulo states, the frequency of temperature extremes and [...]ver notícia -
Brazilian algorithm aims to project future of Amazon Rainforest and predict changes in carbon capture
Publicado em 06 junho 2023A group of researchers at the State University of Campinas (UNICAMP), in São Paulo state, Brazil, has developed an algorithm that projects the future of vegetation in the Amazon, presenting scenarios for transformation of the forest driven by climate change. One of the results shows that a drier climate in the region, with a 50% drop in precipitation, could increase diversity but lower the level of carbon storage. Storage of carbon dioxide (CO2) in roots would increase, but absorption [...]ver notícia -
Secret Behind Amazonian ‘Dark Earth’ Could Help Speed up Forest Restoration Across the Globe
Publicado em 15 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. Between 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 [...]ver notícia -
Novel method of analyzing microplastic particle pollution can facilitate environmental impact assessment
Publicado em 28 fevereiro 2023In the last decade, growing numbers of researchers have studied plastic pollution, one of the world’s most pressing environmental hazards. In the last decade, growing numbers of researchers have studied plastic pollution, one of the world’s most pressing environmental hazards. They have made progress but still face challenges, such as the comparability of results, especially with regard to microplastic particles. There is no standard sample collection and analysis [...]ver notícia -
Fire in the Amazon is Associated More with Agricultural Burning and Deforestation Than With Drought
Publicado em 04 novembro 2022A Brazilian study shows that the number of fires detected in the entire Amazon region between 2003 and 2020 was influenced more by uncontrolled human use of fire than by drought. According to the researchers, burning of vegetation to prepare areas for pasture and deforestation rather than extreme water deficits were the main cause of fire in most years with large numbers of fires. On average, pasture and other agricultural land accounted for 32% of annual burned areas in the Amazon, followed [...]ver notícia -
Scientists Discover Mechanism That Can Cause Collapse Of Great Atlantic Circulation System
Publicado em 18 outubro 2022The Atlantic meridional overturning circulation (AMOC), a system of ocean currents that carry warm water from the tropics into the North Atlantic and transport cold water from the northern to the southern hemisphere, is a fundamental mechanism for the regulation of Earth’s climate. The conveyor belt has collapsed in the past owing to natural factors. The most recent collapse played a key role in the last deglaciation. AMOC is now threatened by global warming, scientists have shown, and a [...]ver notícia