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Honest Columnist (EUA)
Em 2024: 0 notícias
Desde 1995: 46 notícias
Fire in the Amazon is associated more with agricultural burning and deforestation than with drought
Publicado em 07 novembro 2022
A 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 [...]
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Reducing Childhood Poverty Could Cut Criminal Convictions by Almost a Quarter, Study Shows
Publicado em 01 novembro 2022Brazilian researchers interviewed 1,905 children twice in seven years and analyzed 22 risk factors that can influence human development. An article on the study is published in Scientific Reports. Newswise — A significant reduction in childhood poverty could cut criminal convictions by almost a quarter, according to a study conducted in Brazil. An article on the study is published in Scientific Reports. The researchers used an innovative approach involving an analysis of 22 risk [...]ver notícia -
Researchers use cellulose to develop slow-release fertilizer and a self-fertilizing propagation pot
Publicado em 17 outubro 2022October 17, 2022 by Karina Ninni, FAPESP A research team affiliated with the Laboratory of Polymeric Materials and Biosorbents at the Federal University of São Carlos (UFSCar) in Araras, São Paulo state, Brazil, has produced and is testing cellulose-based materials for enhanced-efficiency fertilizers to improve the supply of nutrients to crops and reduce the release of non-biodegradable chemicals into the ecosystem. The studies were led by Roselena Faez, a professor at the [...]ver notícia -
Study shows challenge of promoting citizen science to help prevent disasters caused by flooding
Publicado em 05 outubro 2022An application developed in collaboration with vulnerable communities to provide early warnings about the risk of flooding and environmental disasters has become public policy in Brazil and the methodology is being replicated for use elsewhere. With the practical results achieved in 2022, some of the discussions on proposals to improve flood risk management started at least two years ago. An article published in Disaster Prevention and Management: An International Journal reflects one of the [...]ver notícia -
Team reports on a fungus that simultaneously combats two of the worst threats to banana plantation yields
Publicado em 28 setembro 2022The banana borer Cosmopolites sordidus and the disease Fusarium wilt, caused by the soil-borne fungus Fusarium oxysporum, are among the most harmful pests that threaten the livelihoods of banana growers, who face major challenges in attempting to control them. The former is a species of weevil that bores into the plant's rhizome (the underground stem that produces roots and shoots), weakening its root system, reducing nutrient absorption and significantly lowering yield. The adult insect [...]ver notícia -
Study shows potential of Southern cattail for phytoremediation of areas contaminated by mine tailings
Publicado em 15 setembro 2022Typha domingensis, the Southern cattail, a reedy marsh plant that inhabits fresh to slightly brackish waters and is about 2.5 m tall, can scavenge up to 34 times more manganese from contaminated soil than other plants found in similar environments. In a recent study, it accumulated between 10 and 13 times more manganese than other naturally occurring wetland plants such as hibiscus, sedges and rushes, demonstrating its potential for use in sustainable rehabilitation of areas affected by iron [...]ver notícia -
Study quantifies impact of human activity on Atlantic Rainforest’s carbon storage capacity
Publicado em 13 setembro 2022The countless benefits of native forests include the capacity of tree biomass to store large amounts of carbon, which can counterbalance greenhouse gas emissions into the atmosphere. A paper published in the journal Science Advances reports on an innovative analysis of a large dataset designed to clarify the concept of carbon sequestration, a strategic issue in the discussion of global climate change. “We still know little about the factors that can lead forests to store more [...]ver notícia -
Researchers use AI to define priority areas for action to combat deforestation in the Amazon
Publicado em 24 agosto 2022Using a method based on satellite images and artificial intelligence, Brazilian researchers have shown that the priority area for actions to combat illegal deforestation could comprise 27.8% less territory than the 11 municipalities monitored by the federal government under the current strategy, known as the Amazon Plan 2021/2022. This monitoring ignores new deforestation frontiers outside the targeted areas. According to an article by the researchers, published in June in Conservation [...]ver notícia -
Scientists reveal method of converting methane gas into liquid methanol
Publicado em 02 agosto 2022A group of researchers has succeeded in converting methane into methanol using light and dispersed transition metals such as copper in a process known as photo-oxidation. According to an article reporting the study published in Chemical Communications, the reaction was the best obtained to date for conversion of methane gas into liquid fuel under ambient conditions of temperature and pressure (25 °C and 1 bar respectively). The term bar as a unit of pressure derives from the Greek word [...]ver notícia -
North Atlantic temperature helps forecast extreme events in Northeast Brazil up to three months in advance
Publicado em 22 julho 2022The sea surface temperature in the North Atlantic Ocean can be a predictor up to three months in advance of extreme climate events involving reduced rainfall and intense drought in the Northeast region of Brazil. This is one of the main findings of a study by researchers in Brazil, China, Australia and Germany, according to an article published in Geophysical Research Letters. Using a novel methodology based on the concept of precipitation deficit, the study showed that in recent years the [...]ver notícia