Mercury cycling and isotopic fractionation in global forests

Critical Reviews in Environmental Science and Technology, Год журнала: 2021, Номер 52(21), С. 3763 - 3786

Опубликована: Авг. 12, 2021

Forest ecosystem accounts for 31% of global land areas and plays a key role in the biogeochemical cycling mercury (Hg). In this critical review, datasets Hg flux measurements isotopic compositions environmental compartments forests last three decades are synthesized to examine budgets mass balance storages. The primary goal synthesis is provide insight into source, transportation, translocation fate legacy forests. Existing data indicate that represent largest atmospheric sink terrestrial ecosystem, with total deposition 2200–3400 Mg yr−1 (i.e., relative 40–65% pool size) 500–1100 Gg stored surface soils vegetation. climate cover changes, deforestation wildfire re-volatilize several hundred tons atmosphere, thus increasing ecological risk regional environments. Vegetative uptake Hg0 vapor from air predominantly controls accumulation fractionation atmosphere With ongoing emission reduction anthropogenic sources required by Minamata Convention, an integrated assessment on changing processes response human natural perturbations emissions, climate, use needed.

Язык: Английский

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Thallium and potentially toxic elements distribution in pine needles, tree rings and soils around a pyrite mine and indication for environmental pollution

The Science of The Total Environment, Год журнала: 2022, Номер 828, С. 154346 - 154346

Опубликована: Март 5, 2022

Язык: Английский

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Further investigations into the use of tree rings as archives of atmospheric mercury concentrations

Biogeochemistry, Год журнала: 2022, Номер 158(2), С. 167 - 180

Опубликована: Янв. 28, 2022

Язык: Английский

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Tree rings as historical archives of atmospheric mercury: A critical review

The Science of The Total Environment, Год журнала: 2023, Номер 898, С. 165562 - 165562

Опубликована: Июль 16, 2023

Язык: Английский

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Reconstructing atmospheric Hg levels near the oldest chemical factory in central Europe using a tree ring archive

Environmental Pollution, Год журнала: 2022, Номер 304, С. 119215 - 119215

Опубликована: Март 28, 2022

Язык: Английский

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Tree Rings Record of Long-Term Atmospheric Hg Pollution in the Monte Amiata Mining District (Central Italy): Lessons from the Past for a Better Future

Minerals, Год журнала: 2023, Номер 13(5), С. 688 - 688

Опубликована: Май 18, 2023

Trees may represent useful long-term monitors of historical trends atmospheric pollution due to the trace elements stored along tree rings caused by modifications in environment during a tree’s life. Chestnut (Castanea sativa Mill.) trunk sections were used document yearly evolution Hg world-class mining district Monte Amiata (MAMD; Central Italy) and exploited until 1982. An additional source emissions area have been active geothermal power plants. A marked decrease (from >200 µg/kg <100 µg/kg) contents heartwood is recorded, likely because mine closure; average (tens recent years remain higher than reference ~150 km away from (average 4.6 µg/kg). barks, recording present-day pollution, systematically show concentrations sapwood (up 394 area). This study shows that be good record changes areas affected activity plants can as low-cost biomonitoring method for impact minimization optimal resource land management.

Язык: Английский

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Ficus insipida tree rings as biomonitors for gaseous elemental mercury in the artisanal gold mining-impacted Peruvian Amazon

Frontiers in Environmental Science, Год журнала: 2025, Номер 13

Опубликована: Апрель 8, 2025

Introduction The primary source of anthropogenic atmospheric mercury (Hg) emissions globally is artisanal and small-scale gold mining (ASGM). Estimates Hg from ASGM are poorly constrained due to a lack monitoring data the informal, generally unregulated nature this industry. Trees accumulate gaseous elemental (GEM) in bolewood following stomatal uptake thus have potential be used as biomonitors quantify spatial temporal footprint ASGM. Methods We collected tree cores Ficus insipida at three mining-impacted two remote, unimpacted sites Peruvian Amazon (n = 4 trees per site). Results show that ring concentrations were higher near activity located towns (6.0 ng g −1 ) compared remote (0.9 recent rings strongly linearly correlated with GEM across all (p &lt; 0.0001, r 2 0.64), especially dry season when there enhanced 0.76), highlighting for GEM. At most impacted sites, tree-ring increased over time response intensification Discussion Thus far, applications dendrochemistry pollution been largely restricted coniferous species temperate regions, but study shows tropical also pollution. conclude suitable biomonitor powerful tool characterizing spatial, potentially neotropics.

Язык: Английский

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Mercury cycling in the Czech GEOMON network catchments recovering from acid deposition and facing climate change

Biogeochemistry, Год журнала: 2025, Номер 168(3)

Опубликована: Апрель 24, 2025

Язык: Английский

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The Multi-Compartment Hg Modeling and Analysis Project (MCHgMAP): mercury modeling to support international environmental policy

Geoscientific model development, Год журнала: 2025, Номер 18(9), С. 2747 - 2860

Опубликована: Май 16, 2025

Abstract. The Multi-Compartment Hg (mercury) Modeling and Analysis Project (MCHgMAP) is an international multimodel research initiative intended to simulate analyze the geospatial distributions temporal trends of environmental inform effectiveness evaluations two multilateral agreements (MEAs): Minamata Convention on Mercury (MC) Long-Range Transboundary Air Pollution (LRTAP). This MCHgMAP overview paper presents its science objectives, background, rationale; experimental design (multimodel ensemble (MME) architecture, inputs evaluation data, simulations, reporting framework); methodologies for analysis simulated levels. primary goals project are facilitate detection attribution recent (observed) future (projected) spatial patterns global levels identification key knowledge gaps in modeling improve cycles MEAs. current advances challenges models, emission inventories, observational data examined, optimized introduced address policy questions A common set emissions, conditions, observation datasets proposed (where possible) enhance MME comparability. novel harmonized simulation approach between atmospheric, land, oceanic, multimedia models account short- long-term changes secondary exchanges achieve mechanistic consistency across matrices. comprehensive model experiments prioritized ensure systematic participation a variety from scientific community.

Язык: Английский

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Atmospheric mercury pollution recorded in conifer tree rings: Disentangling the effects of tree-ring width, water content, and climate on mercury concentrations

Dendrochronologia, Год журнала: 2025, Номер unknown, С. 126370 - 126370

Опубликована: Май 1, 2025

Язык: Английский

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