Mercury in Aquatic Systems of North Patagonia (Argentina): Sources, Processes, and Trophic Transfer

Diéguez, María del Carmen; Arcagni, Marina; Rizzo, Andrea; Catán, Soledad Perez; Cárdenas, Carolina Soto; Horvat, Milena; Guevara, Sergio Ribeiro

doi:10.1007/978-3-031-10027-7_8

Cited by 3 publications

(2 citation statements)

References 135 publications

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“…Mercury emissions from volcanic eruptions and geothermal activity in the Andean Volcanic Belt are linked to the high background Hg concentrations in soils of the region ([ 100 ng g -1 ) (Ribeiro Guevara et al 2010;Daga et al 2016). Similar Hg enrichment has also been recorded in lake sediments of Patagonia, resulting in a significant Hg input to aquatic environments (Soto Ca ´rdenas et al 2018;Perez Cata ´n et al 2020;Die ´guez et al, 2022) (Fig. 2).…”

Section: Volcanic Mercury Emissionsmentioning

confidence: 79%

“…2 ), Hg concentrations vary according to volcanic sources. For instance, topsoil under the influence of the Copahue volcano has an average Hg concentration of 370 ± 160 ng g −1 (Pérez Catán et al 2020), while soils under the influence of the Puyehue Cordón Caulle volcanic complex have a topsoil Hg concentration of 75 ± 34 ng g −1 ) (Diéguez et al 2022 ). This demonstrates the importance of local studies on individual volcanic Hg contribution.…”

Section: Background Mercury In Soilsmentioning

confidence: 99%

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A synthesis of mercury research in the Southern Hemisphere, part 1: Natural processes

Schneider

Fisher

Diéguez

et al. 2023

Ambio

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Recent studies demonstrate a short 3–6-month atmospheric lifetime for mercury (Hg). This implies Hg emissions are predominantly deposited within the same hemisphere in which they are emitted, thus placing increasing importance on considering Hg sources, sinks and impacts from a hemispheric perspective. In the absence of comprehensive Hg data from the Southern Hemisphere (SH), estimates and inventories for the SH have been drawn from data collected in the NH, with the assumption that the NH data are broadly applicable. In this paper, we centre the uniqueness of the SH in the context of natural biogeochemical Hg cycling, with focus on the midlatitudes and tropics. Due to its uniqueness, Antarctica warrants an exclusive review of its contribution to the biogeochemical cycling of Hg and is therefore excluded from this review. We identify and describe five key natural differences between the hemispheres that affect the biogeochemical cycling of Hg: biome heterogeneity, vegetation type, ocean area, methylation hotspot zones and occurence of volcanic activities. We review the current state of knowledge of SH Hg cycling within the context of each difference, as well as the key gaps that impede our understanding of natural Hg cycling in the SH. The differences demonstrate the limitations in using NH data to infer Hg processes and emissions in the SH.

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Section: Volcanic Mercury Emissionsmentioning

confidence: 79%

Section: Background Mercury In Soilsmentioning

confidence: 99%

A synthesis of mercury research in the Southern Hemisphere, part 1: Natural processes

Schneider

Fisher

Diéguez

et al. 2023

Ambio

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Patterns and Trends of Atmospheric Mercury in the Gmos Network: Insights Based on a Decade of Measurements

Bencardino,

D'Amore,

Angot

et al. 2024

Preprint

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A Retrospection on Mercury Contamination, Bioaccumulation, and Toxicity in Diverse Environments: Current Insights and Future Prospects

Kumar,

Umesh,

Shanmugam

et al. 2023

Sustainability

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Owing to various industrial applications of mercury (Hg), its release into the environment at high concentration is becoming a great threat to living organisms on a global scale. Human exposure to Hg is greatly correlated with contamination in the food chain through cereal crops and sea foods. Since Hg is a non-essential component and does not possess a biological role and exhibits carcinogenic and genotoxic behaviour, biomonitoring with a focus on biomagnification of higher living animals and plants is the need of the hour. This review traces the plausible relationship between Hg concentration, chemical form, exposure, bioavailability, bioaccumulation, distribution, and ecotoxicology. The toxicity with molecular mechanisms, oxidative stress (OS), protein alteration, genomic change, and enzymatic disruptions are discussed. In addition, this review also elaborates advanced strategies for reducing Hg contamination such as algal and phytoremediation, biochar application, catalytical oxidation, and immobilization. Furthermore, there are challenges to overcome and future perspectives considering Hg concentrations, biomarkers, and identification through the nature of exposures are recommended.

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Mercury in Aquatic Systems of North Patagonia (Argentina): Sources, Processes, and Trophic Transfer

Cited by 3 publications

References 135 publications

A synthesis of mercury research in the Southern Hemisphere, part 1: Natural processes

A synthesis of mercury research in the Southern Hemisphere, part 1: Natural processes

Patterns and Trends of Atmospheric Mercury in the Gmos Network: Insights Based on a Decade of Measurements

A Retrospection on Mercury Contamination, Bioaccumulation, and Toxicity in Diverse Environments: Current Insights and Future Prospects

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