Os limites da agricultura convencional e as razões de sua persistência: estudo do caso de Sumidouro, RJ

Stotz, Eduardo Navarro

doi:10.1590/s0303-76572012000100014

Cited by 14 publications

(8 citation statements)

References 9 publications

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“…The farm size in the sample ranges from 5 to 1000 hectares with an average size of 125 hectares (Table 4). Rural economic policies favoring large-scale, highly productive, and highly intensified agribusinesses in Brazil [48][49][50] promoted the marginalization of less suitable agricultural areas, mainly those with severe mechanization constraints (i.e., steep slopes), as also noted in other studies [12,50,51]. The aging of the rural population is a recent concern in Brazil.…”

Section: Rural Socioeconomic Characterizationmentioning

confidence: 92%

Regional Socioeconomic Changes Affecting Rural Area Livelihoods and Atlantic Forest Transitions

Silva

Batistella

Moran

2018

Land

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Centuries of colonization of the Atlantic Forest biome in Brazil have led its native vegetation cover to be reduced to only 11.7%. On the other hand, regional land changes have fostered natural forest regeneration, since the 1960s, in the region of Paraíba Valley. A fieldwork survey in rural properties was conducted in three municipalities (n = 90, thirty in each municipality), to assess how forest transition is affected by the region’s socioeconomic development and biophysical dimensions of the landscape. To select the municipalities among thirty-four, we applied the modified Thompson Tau technique to detect outlier values for three selected variables: Natural forest cover, eucalyptus plantation cover, and municipal revenue. The outliers were dropped from consideration and the municipality with the maximum value for each variable was selected. Based on the survey and GIS analysis using land-cover maps, topography, and hydrology variables, we concluded that the diminished land-use pressure in the Paraíba Valley, a response to the regional economic development (e.g., increasing labor demand in urban areas pushing rural migration), resulted in the increase of the Atlantic forest cover. Interestingly enough, a counter-migration of people moving to rural areas as a newly valued amenity has the potential to reshape the rural landscape with positive outcomes to the Atlantic forest cover.

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Section: Rural Socioeconomic Characterizationmentioning

confidence: 92%

Regional Socioeconomic Changes Affecting Rural Area Livelihoods and Atlantic Forest Transitions

Silva

Batistella

Moran

2018

Land

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“…Esse processo trouxe uma significante modificação do ponto de vista da vida sociocultural, modificando a cultura tradicional como a urbanização e internacionalização das sociedades modernas, inclusive dos trabalhadores rurais, ranqueando o Brasil no maior consumidor de agrotóxico no mundo. De tal modo, os trabalhadores da agropecuária estão sujeitos ao monitoramento e vigilân-cia da saúde, uma vez as intoxicações pelo uso de agrotóxicos são consideradas como um problema de saúde pública (3) .…”

Section: Introdução Ounclassified

Riscos í saúde do trabalhador rural exposto ao agrotóxico

Silva¹,

Camacho²,

Menezes³

et al. 2020

SaudColetiv (Barueri)

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O objetivo é analisar a prevalência de fatores de risco à saúde do trabalhador rural exposto ao agrotóxico. Trata-se de estudo transversal, observacional, que ocorreu no período de março a agosto de 2019 e cuja amostra foi constituída de 60 trabalhadores rurais do município de Casimiro de Abreu, no estado do Rio de Janeiro. Identificou-se, que o trabalhador rural tinha um tempo de contato com agrotóxicos de 30,1 anos, e 54,3% dos participantes relataram apresentar algum sintoma de intoxicação (cefaleia, dispneia, prurido pelo corpo, náusea e sinusite). O glifosato é o agrotóxico mais utilizado no município e a maioria dos trabalhadores entrevistados não utiliza Equipamento de Proteção Individual adequado durante a manipulação dos agroquímicos. Evidenciou-se a necessidade de mecanismos alternativos para as práticas de cultivo no agronegócio, e de cuidado com a saúde do trabalhador exposto ao uso de agrotóxicos por meio da adoção de medidas educativas e preventivas. Recomenda-se aos órgãos públicos a implantação de programas específicos para o trabalhador rural, na perspectiva única de permanecer no ranking do agronegócio, porém com práticas de promover a saúde integral desta população rural vulnerável em sua totalidade.

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“…In the present study, although B. glabrata specimens were collected in Sumidouro, an endemic region for schistosomiasis in the state of Rio de Janeiro, none of the animals were found infected, as well as specimens of B. tenagophila and B. straminea. Pesticides are widely used on the farms in this municipality, where agriculture is a mainstay of the local economy (21), and the intoxication of local farm laborers has been reported by Oswaldo Cruz Foundation (22). Despite the evidence, complementary techniques to the NIRS, such as metabolomics and chemical analysis, are necessary to deepen the analysis in relation to environmental contamination.…”

Section: Discussionmentioning

confidence: 99%

Field Application of NIR Spectroscopy for the Discrimination of the Biomphalaria Species That Are Intermediate Hosts of Schistosoma mansoni in Brazil

Valladares

Pasquini

Thiengo

et al. 2021

Front. Public Health

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Near Infrared Spectroscopy (NIRS) is a spectroscopic technique that evaluates the vibrational energy levels of the chemical bonds of molecules within a wavelength range of 750–2,500 nm. This simple method acquires spectra that provide qualitative and quantitative data on the chemical components of the biomass of living organisms through the interaction between the electromagnetic waves and the sample. NIRS is an innovative, rapid, and non-destructive technique that can contribute to the differentiation of species based on their chemical phenotypes. Chemical profiles were obtained by NIRS from three snail species (Biomphalaria glabrata, Biomphalaria straminea, and Biomphalaria tenagophila) that are intermediate hosts of Schistosoma mansoni in Brazil. The correct identification of these species is important from an epidemiological viewpoint, given that each species has distinct biological and physiological characteristics. The present study aimed to develop a chemometric model for the interspecific and intra-specific classification of the three species, focusing on laboratory and field populations. The data were obtained from 271 live animals, including 150 snails recently collected from the field, with the remainder being raised in the laboratory. Populations were sampled at three localities in the Brazilian state of Rio de Janeiro, in the municipalities of Sumidouro (B. glabrata) and Paracambi (B. straminea), and the borough of Jacarepaguá in the Rio de Janeiro city (B. tenagophila). The chemometric analysis was run in the Unscrambler® software. The intra-specific classification of the field and laboratory populations obtained accuracy rates of 72.5% (B. tenagophila), 77.5% (B. straminea), and 85.0% (B. glabrata). The interspecific differentiation had a hit rate of 75% for the field populations and 80% for the laboratory populations. The results indicate chemical and metabolic differences between populations of the same species from the field and the laboratory. The chemical phenotype, which is closely related to the metabolic profile of the snails, varied between environments. Overall, the NIRS technique proved to be a potentially valuable tool for medical malacology, enabling the systematic discrimination of the Biomphalaria snails that are the intermediate hosts of S. mansoni in Brazil.

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Os limites da agricultura convencional e as razões de sua persistência: estudo do caso de Sumidouro, RJ

Cited by 14 publications

References 9 publications

Regional Socioeconomic Changes Affecting Rural Area Livelihoods and Atlantic Forest Transitions

Regional Socioeconomic Changes Affecting Rural Area Livelihoods and Atlantic Forest Transitions

Riscos í saúde do trabalhador rural exposto ao agrotóxico

Field Application of NIR Spectroscopy for the Discrimination of the Biomphalaria Species That Are Intermediate Hosts of Schistosoma mansoni in Brazil

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