Increased in carbon isotope ratios of Brazilian fingernails are correlated with increased in socioeconomic status

Nardoto, Gabriela Bielefeld; Sena-Souza, João Paulo; Kisaka, Tiago Borges; Costa, Fábio José Viana; Duarte‐Neto, Paulo José; Ehleringer, James R.; Martinelli, Luiz Antônio

doi:10.1038/s41538-020-0069-1

Cited by 10 publications

(5 citation statements)

References 14 publications

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“…The consumption of corn-fed animal protein in the United States is more prevalent in the diets of lower SES populations. These results contrast with similarly designed studies in Brazil and Colombia, where meat is relatively more expensive and forms a smaller proportion of the diets of those individuals with lower SES ( 12 – 14 ). Here we estimate the proportions of corn-fed animal- vs. plant-based protein in human diets across the United States as assessed by measurements of carbon and nitrogen stable isotopes in human hair.…”

contrasting

confidence: 99%

Stable isotopes in hair reveal dietary protein sources with links to socioeconomic status and health

Ehleringer

Avalos

Tipple

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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Carbon and nitrogen isotope ratios in hair sampled from 65 communities across the central and intermountain regions of the United States and more intensively throughout 29 ZIP codes in the Salt Lake Valley, Utah, revealed a dietary divergence related to socioeconomic status as measured by cost of living, household income, and adjusted gross income. Corn-fed, animal-derived proteins were more common in the diets of lower socioeconomic status populations than were plant-derived proteins, with individual estimates of animal-derived protein diets as high as 75%; United States towns and cities averaged 57%. Similar patterns were seen across the socioeconomic status spectrum in the Salt Lake Valley. It is likely that corn-fed animal proteins were associated with concentrated animal-feeding operations, a common practice for industrial animal production in the United States today. Given recent studies highlighting the negative impacts of animal-derived proteins in our diets, hair carbon isotope ratios could provide an approach for scaling assessments of animal-sourced foods and health risks in communities across the United States.

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contrasting

confidence: 99%

Stable isotopes in hair reveal dietary protein sources with links to socioeconomic status and health

Ehleringer

Avalos

Tipple

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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“…Several lines of evidence indicate that pre-European coastal communities were able to extract volumes of fish comparable to or greater than subsistence catches in recent times [41]. Stable isotopes analyses also revealed that fish consumption per capita (contribution of marine protein to individual diet) was higher among pre-European communities [40] compared to local modern populations in coastal Brazil [134][135][136]. Nevertheless, the archaeological faunal record does not provide evidence for measurable human impacts on coastal organisms in this region.…”

Section: Variations In Pre-european Fish Compositionsmentioning

confidence: 99%

Bridging archaeology and marine conservation in the Neotropics

et al. 2023

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Anthropogenic impacts on tropical and subtropical coastal environments are increasing at an alarming rate, compromising ecosystem functions, structures and services. Understanding the scale of marine population decline and diversity loss requires a long-term perspective that incorporates information from a range of sources. The Southern Atlantic Ocean represents a major gap in our understanding of pre-industrial marine species composition. Here we begin to fill this gap by performing an extensive review of the published data on Middle and Late Holocene marine fish remains along the southern coast of Brazil. This region preserves archaeological sites that are unique archives of past socio-ecological systems and pre-European biological diversity. We assessed snapshots of species compositions and relative abundances spanning the last 9500 years, and modelled differences in species’ functional traits between archaeological and modern fisheries. We found evidence for both generalist and specialist fishing practices in pre-European times, with large body size and body mass caught regularly over hundreds of years. Comparison with modern catches revealed a significant decline in these functional traits, possibly associated with overfishing and escalating human impacts in recent times.

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“…Thus, it is suggested that predictive models should be developed for each different region. This is an important observation, since each region of Brazil differs in terms of socioeconomic indicators, sources of GHG emissions, and efforts to mitigation strategies, such as clean energy production [26,88,89].…”

Section: Descriptive Analysis and Multivariate Linear Regression Modelsmentioning

confidence: 99%

Modeling Carbon Release of Brazilian Highest Economic Pole and Major Urban Emitter: Comparing Classical Methods and Artificial Neural Networks

Debone

Martins

Miraglia

2022

Climate

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Despite the concern about climate change and the associated negative impacts, fossil fuels continue to prevail in the global energy consumption. This paper aimed to propose the first model that relates CO2 emissions of Sao Paulo, the main urban center emitter in Brazil, with gross national product and energy consumption. Thus, we investigated the accuracy of three different methods: multivariate linear regression, elastic-net regression, and multilayer perceptron artificial neural networks. Comparing the results, we clearly demonstrated the superiority of artificial neural networks when compared with the other models. They presented better results of mean absolute percentage error (MAPE = 0.76%) and the highest possible coefficient of determination (R2 = 1.00). This investigation provides an innovative integrated climate-economic approach for the accurate prediction of carbon emissions. Therefore, it can be considered as a potential valuable decision-support tool for policymakers to design and implement effective environmental policies.

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Increased in carbon isotope ratios of Brazilian fingernails are correlated with increased in socioeconomic status

Cited by 10 publications

References 14 publications

Stable isotopes in hair reveal dietary protein sources with links to socioeconomic status and health

Stable isotopes in hair reveal dietary protein sources with links to socioeconomic status and health

Bridging archaeology and marine conservation in the Neotropics

Modeling Carbon Release of Brazilian Highest Economic Pole and Major Urban Emitter: Comparing Classical Methods and Artificial Neural Networks

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