Mercury and Methylmercury Contamination of Terrestrial and Aquatic Ecosystems

Guédron, Stéphane; Achá, Darío

doi:10.3390/app11114807

Cited by 3 publications

(2 citation statements)

References 9 publications

(9 reference statements)

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“…Aquatic ecosystems are increasingly threatened by human-mediated sources of contaminants (Guédron & Acha 2021;Schwarzenbach et al 2006). Elevated levels of metal contaminants have been measured in archival tissues such as otoliths, fin rays, and eye lenses, to monitor elevated exposures and corroborate water quality concerns (e.g., Dove & Kingsford 1998;Mounicou et al 2019;Selleslagh et al 2016;Sun et al 2019).…”

Section: Contaminantsmentioning

confidence: 99%

Reading the biomineralized book of life: expanding otolith biogeochemical research and applications for fisheries and ecosystem-based management

Patrick

Gillanders

Sturrock

et al. 2022

Rev Fish Biol Fisheries

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Chemical analysis of calcified structures continues to flourish, as analytical and technological advances enable researchers to tap into trace elements and isotopes taken up in otoliths and other archival tissues at ever greater resolution. Increasingly, these tracers are applied to refine age estimation and interpretation, and to chronicle responses to environmental stressors, linking these to ecological, physiological, and life-history processes. Here, we review emerging approaches and innovative research directions in otolith chemistry, as well as in the chemistry of other archival tissues, outlining their value for fisheries and ecosystem-based management, turning the spotlight on areas where such biomarkers can support decision making. We summarise recent milestones and the challenges that lie ahead to using otoliths and archival tissues as biomarkers, grouped into seven, rapidly expanding and application-oriented research areas that apply chemical analysis in a variety of contexts, namely: (1) supporting fish age estimation; (2) evaluating environmental stress, ecophysiology and individual performance; (3) confirming seafood provenance; (4) resolving connectivity and movement pathways; (5) characterising food webs and trophic interactions; (6) reconstructing reproductive life histories; and (7) tracing stock enhancement efforts. Emerging research directions that apply hard part chemistry to combat seafood fraud, quantify past food webs, as well as to reconcile growth, movement, thermal, metabolic, stress and reproductive life-histories provide opportunities to examine how harvesting and global change impact fish health and fisheries productivity. Ultimately, improved appreciation of the many practical benefits of archival tissue chemistry to fisheries and ecosystem-based management will support their increased implementation into routine monitoring. Graphical abstract

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Section: Contaminantsmentioning

confidence: 99%

Reading the biomineralized book of life: expanding otolith biogeochemical research and applications for fisheries and ecosystem-based management

Patrick

Gillanders

Sturrock

et al. 2022

Rev Fish Biol Fisheries

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“…Mercury (Hg) is a recognized ubiquitous contaminant in aquatic ecosystems [1] [2]. Methylmercury (MeHg) is the Hg species of particular interest due to its propensity to bioaccumulate and potentiality to cause health problems to humans and wildlife when exposed at high levels [3].…”

Section: Introductionmentioning

confidence: 99%

Exposure of Mercury from Gold Ming Area: A Case Study in Tendo and Aby Lagoon in Côte d’Ivoire

Claon¹,

Kouassi²,

M’bassidje³

et al. 2022

JEP

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Lagoons of West African countries are seriously threatened by rapid artisanal and small-scale gold mining (ASGM) that exposes lagoons to mercury pollution. In this study, the mercury level in the sediments of the Tendo and Aby lagoons in Côte d'Ivoire had been evaluated. A total of 87 samples from 25 stations located on Tendo and Aby lagoons were analyzed by atomic fluorescence spectrometry. The mean Hg concentrations obtained in the sediments of Tendo and Aby lagoons were 0.89 ± 0.26 mg•kg −1 and 0.70 ± 0.18 mg•kg −1 , respectively. Hg concentrations evaluated in the bays of Tendo and Aby during the dry season were 1.38 ± 0.45 mg•kg −1 and 1.07 ± 0.31 mg•kg −1 , respectively. The minimum and maximum total Hg concentrations in the sediments from 25 stations were 0.04 and 3.56 mg•kg −1 , respectively. Mercury contamination in lagoons during ASGM poses risks of pollution for the lagoon ecosystem and also poses health risks for the population living near these lagoons.

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Soil Pollution by Mercury in Sub-Saharan Africa

2023

Global Industrial Impacts of Heavy Metal Pollution in Sub-Saharan Africa

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This chapter seeks to understand the sources and chemistry of mercury (Hg), which enable it to exert pollution in soils of Sub-Saharan Africa (SSA) region. Cinnabar was found to be the most common ore from which the heavy metal is found. In soils and as a result of anthropogenic activities, various forms of Hg are found including the particulate, gaseous reactive, and reactive gaseous compounds of the metal. Methyl Hg was found to be the most lethal form in soils due to its high absorption capacity and longer half-life allowing its cycling in different environmental compartments. In SSA, lethal forms of mercury were introduced to soil through Hg-amalgamation during artisanal gold mining. Industrial activities including coal processing and cement making and their associated wastes also polluted the soils of the region. From the growing concern with Hg pollution in soils, it is key to monitor the trends and devise remedial measures.

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Mercury and Methylmercury Contamination of Terrestrial and Aquatic Ecosystems

Abstract: In 2017, 128 countries signed the Minamata Convention on Mercury (Hg) to protect human health and the environment from the adverse effects of mercury [...]

Cited by 3 publications

References 9 publications

Reading the biomineralized book of life: expanding otolith biogeochemical research and applications for fisheries and ecosystem-based management

Reading the biomineralized book of life: expanding otolith biogeochemical research and applications for fisheries and ecosystem-based management

Exposure of Mercury from Gold Ming Area: A Case Study in Tendo and Aby Lagoon in Côte d’Ivoire

Soil Pollution by Mercury in Sub-Saharan Africa

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Mercury and Methylmercury Contamination of Terrestrial and Aquatic Ecosystems

Abstract: In 2017, 128 countries signed the Minamata Convention on Mercury (Hg) to protect human health and the environment from the adverse effects of mercury [...]

Cited by 3 publications

References 9 publications

Reading the biomineralized book of life: expanding otolith biogeochemical research and applications for fisheries and ecosystem-based management

Reading the biomineralized book of life: expanding otolith biogeochemical research and applications for fisheries and ecosystem-based management

Exposure of Mercury from Gold Ming Area: A Case Study in Tendo and Aby Lagoon in C&#244;te d’Ivoire

Soil Pollution by Mercury in Sub-Saharan Africa

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Product

Resources

About

Exposure of Mercury from Gold Ming Area: A Case Study in Tendo and Aby Lagoon in Côte d’Ivoire