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Mercury (Hg) contamination in the Amazon is well-known globally and well-studied. However, there remains a notable research gap regarding Hg contamination in the coastal zone and continental shelf of the Amazon region. Therefore, the aim of this study was to evaluate the levels of Hg concentrations in water and sediments within the coastal region and continental shelf of the Amazon, identifying spatial trends and the main geochemical processes that influence the transport and fate of this metal in the area. The Hg concentrations in the unfiltered water varied among the analyzed regions (p < 0.0001), with the highest values recorded in the estuary of the Pará River, 13.8 pmol L -1 , and the lowest values, 1.5 pmol L -1 , in the Amazon River North Plume. The Hg concentrations in the study regions were found to be positively related to total organic carbon (TOC; R 2  = 0.537, p < 0.0001) and with suspended particulate matter (SPM; R 2  = 0.227, p < 0.0001) in water samples, with these matrices being identified as geochemical supports for the dynamics and transport of Hg in the continental shelf. The δ 13 C of organic matter presented a median of -28.0 ‰ in the dissolved fraction, -24.2 ‰ in the particulate fraction and -24.7 ‰ in the sediments. The median δ 15 N values were 2.2 ‰ in the dissolved fraction, 5.0 ‰ in the particulate fraction and 3.8 ‰ in the sediments. The isotopic and elemental composition of organic matter, along with the negative relation between Hg concentrations and salinity in the study areas (R 2  = 0.301, p < 0.0001), indicates that the Hg present on the continental shelf primarily originates from the Amazonian drainage basin., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2025 Elsevier Inc. All rights reserved.)

Unlabelled: Common bean (Phaseolus vulgaris L.) is one of the most consumed staple foods worldwide. Little is known about the molecular mechanisms controlling seed development. This study aims to comprehensively describe proteome dynamics during seed development of common bean. A high-throughput gel-free proteomics approach (LC-MS/MS) was conducted on seeds at 10, 20, 30 and 40days after anthesis, spanning from late embryogenesis until desiccation. Of the 418 differentially accumulated proteins identified, 255 were characterized, most belonging to protein metabolism. An accumulation of proteins belonging to the MapMan functional categories of "protein", "glycolysis", "TCA", "DNA", "RNA", "cell" and "stress" were found at early seed development stages, reflecting an extensive metabolic activity. In the mid stages, accumulation of storage, signaling, starch synthesis and cell wall-related proteins stood out. In the later stages, an increase in proteins related to redox, protein degradation/modification/folding and nucleic acid metabolisms reflect that seed desiccation-resistance mechanisms were activated. Our study unveils new clues to understand the regulation of seed development mediated by post-translational modifications and maintenance of genome integrity. This knowledge enhances the understanding on seed development molecular mechanisms that may be used in the design and selection of common bean seeds with desired quality traits., Significance: Common bean (P. vulgaris) is an important source of proteins and carbohydrates worldwide. Despite the agronomic and economic importance of this pulse, knowledge on common bean seed development is limited. Herein, a gel-free high throughput methodology was used to describe the proteome changes during P. vulgaris seed development. Data obtained will enhance the knowledge on the molecular mechanisms controlling this grain legume seed development and may be used in the design and selection of common bean seeds with desired quality traits. Results may be extrapolated to other pulses., (Copyright © 2016 Elsevier B.V. All rights reserved.)