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Impact of forest fire on the mercury stable isotope composition in litter and soil in the Amazon
Chemosphere. 2023 Aug 9:139779. doi: 10.1016/j.chemosphere.2023.139779. Online ahead of print.ABSTRACTMercury (Hg) emissions from forest fires, especially tropical forests such as the Amazonian forest, were shown to contribute significantly to the atmospheric mercury budget, but new methods are still necessary to improve the traceability and to reduce the great uncertainties related to this emission source. Recent studies have shown that the combustion process can result in Hg stable isotope fractionation that allows tracking coal combustion Hg emissions, as influenced by different factors such as combustion temperature. T...
Source: Chemosphere - August 11, 2023 Category: Chemistry Authors: Larissa Richter David Amouroux Emmanuel Tessier Anne H élène Fostier Source Type: research

The iNaturalist platform as a source of data to study amphibians in Brazil
An Acad Bras Cienc. 2023 Apr 14;95(1):e20220828. doi: 10.1590/0001-3765202320220828. eCollection 2023.ABSTRACTBased on debilitating recent budget cuts for science, Brazilian researchers had to find alternative ways to continue scientific production. Here we provide a perspective for the use of citizen-science data deposited in the iNaturalist platform as an alternative source of data to support biodiversity research. Observations contributed by volunteers can be analyzed at large spatial and temporal scales and can respond to questions in behavioral and population ecology. We analyzed this potential through the example of ...
Source: An Acad Bras Cienc - April 19, 2023 Category: Science Authors: Lucas R Forti Judit K Szabo Source Type: research

Gender and skin color/race intersections in food insecurity across Brazilian households
This study aims to investigate the intersections of gender and skin color/race in the cases of food insecurity in households across Brazil. Microdata from the 2018 Brazilian Household Budgets Survey (POF) were used, with a sample of 57,920 households. Food insecurity levels were compared to profiles created from the intersection of gender (man and woman) and skin color/race: white man, white woman, mixed-race man, mixed-race woman, black man, and black woman. Prevalence ratios (PR) were estimated using Poisson regression models to investigate the association of profiles with moderate/severe food insecurity, separated by ma...
Source: Cadernos de Saude Publica - March 15, 2023 Category: International Medicine & Public Health Authors: Lissandra Amorim Santos Aline Alves Ferreira Rafael P érez-Escamilla Lia Lucia Sabino Livia Gomes de Oliveira Rosana Salles-Costa Source Type: research

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