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thiarleneluzifgoiano/micromar-atlas: MICROMar Atlas v1.0.0
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This release describes an online tool called the MICROMar Atlas, which maps microplastic pollution data from beach sediments across Brazil's coast. It compiles information from over 4,000 samples collected at more than 1,000 beaches, showing microplastic amounts, types, colors, and related environmental factors.
MICROMar Atlas v1.0.0 First official release of the MICROMar Atlas, an interactive platform for visualizing, exploring, and comparing microplastic pollution data from Brazilian coastal sediments. This release integrates data from 4,134 georeferenced samples, 1,024 beaches, 211 municipalities, and 17 coastal states. The platform provides interactive visualization of: spatial distribution of microplastics; microplastic abundance and beach-level indicators; morphotype, polymer, and color composition; compositional comparisons among territories; pollution load, polymer hazard, and ecological risk; environmental and anthropogenic factors associated with microplastic distribution. Official website: https://thiarleneluzifgoiano.github.io/micromar-atlas/ Interactive Atlas: https://01a0d44d-25c8-a964-3421-b8ce6dfaf632.share.connect.posit.cloud/ Authors: Thiarlen Marinho da Luz Guilherme Malafaia Version: 1.0.0 Release year: 2026
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Microplastic pollution across the Brazilian coastline: Evidence from the MICROMar project, the largest coastal survey in the Global South
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As part of Brazil's MICROMar project, researchers analysed 4,134 samples from 1,024 beaches along approximately 7,500 km of Brazilian coastline to produce the largest standardised coastal microplastic survey in the Global South. Microplastics were found ubiquitously, with concentration patterns linked to population density, coastal morphology, and river inputs.
Recognizing microplastic deposits on sandy beaches by altimetric positioning, μ-Raman spectroscopy and multivariate statistical models
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Researchers combined satellite positioning, Raman spectroscopy, and statistical modeling to map and characterize microplastic deposits on sandy beaches along the Sao Paulo coast in Brazil. They found that microplastic distribution was linked to beach elevation, tidal patterns, and proximity to industrial and port activities. The study introduces a replicable methodology for systematically monitoring plastic pollution on coastlines.
Assessment of microplastic in beaches of Guanabara Bay, Rio de Janeiro, RJ, Brazil
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Brazilian researchers analyzed beach sediments at three sites around Guanabara Bay in Rio de Janeiro for microplastic contamination, separating and characterizing plastic debris by size, color, and type. The study contributes to understanding microplastic pollution levels in one of Brazil's most urbanized and ecologically stressed coastal bays.
Meso- and microplastic composition, distribution patterns and drivers: A snapshot of plastic pollution on Brazilian beaches
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A standardized survey of plastic pollution across 22 sandy beaches spanning over 4600 km of Brazilian coast found widespread contamination in coastal sediments, with polymer type, size, and distribution patterns reflecting diverse sources including fishing activity and urban runoff.
Occurrence and Characterization of Microplastics in Coastal Beach Sand: Insights from a Case Study at Praia Vermelha, Brazil
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Researchers developed and validated a standardised protocol for collecting, processing, and characterising microplastics in beach sands at Praia Vermelha in Rio de Janeiro, Brazil, using flotation extraction and systematic sampling to demonstrate the methodology's effectiveness for identifying microplastics from coastal plastic waste disposal.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.