ACS ES&T Air, Journal Year: 2025, Volume and Issue: unknown
Published: April 7, 2025
Language: Английский
Ecotoxicology, Journal Year: 2024, Volume and Issue: 33(4-5), P. 325 - 396
Published: April 29, 2024
Abstract An important provision of the Minamata Convention on Mercury is to monitor and evaluate effectiveness adopted measures its implementation. Here, we describe for first time currently available biotic mercury (Hg) data a global scale improve understanding efforts reduce impact Hg pollution people environment. Data from peer-reviewed literature were compiled in Global Biotic Synthesis (GBMS) database (>550,000 points). These provide foundation establishing biomonitoring framework needed track concentrations biota globally. We exposure taxa identified by Convention: fish, sea turtles, birds, marine mammals. Based GBMS database, are presented at relevant geographic scales continents oceanic basins. identify some effective regional templates monitoring methylmercury (MeHg) availability environment, but overall illustrate that there general lack initiatives around world, especially Africa, Australia, Indo-Pacific, Middle East, South Atlantic Pacific Oceans. Temporal trend generally limited. Ecologically sensitive sites (where have above average MeHg tissue concentrations) been throughout world. Efforts model quantify ecosystem sensitivity locally, regionally, globally could help establish efficient programs. present network includes three-step continental approach integrate existing prioritize filling gaps linked with key sources. standardized builds an evidence-based evaluation assess Convention’s progress
Language: Английский
Citations
22
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: Jan. 30, 2025
Human activities have emitted substantial mercury into the atmosphere, significantly impacting ecosystems and human health worldwide. Currently, consistent methodologies to evaluate long-term emissions across countries industries are scant, hindering efforts prioritize emission controls. Here, we develop a high-spatiotemporal-resolution dataset comprehensively analyze global anthropogenic patterns. We show that increased 330% during 1960–2021, with declines in developed Global North since 1990s China 2010s completely offset by rapid growth South (excluding China). Consequently, continued rise slightly 2013 Minamata Convention. In 2021, produced two-thirds of emissions, despite comprising only one-fifth economy. predict that, although large uncertainties exist, under business-as-usual scenario could increase 10%-50% 2030. Our findings demonstrate control has reached critical juncture, highlighting urgent need target reductions prevent worsening environmental impacts. from South, which now produces emissions. Without action, 10%–50%
Language: Английский
Citations
2
Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(11), P. 4968 - 4978
Published: March 7, 2024
Knowledge gaps of mercury (Hg) biogeochemical processes in the tropical rainforest limit our understanding global Hg mass budget. In this study, we applied stable isotope tracing techniques to quantitatively understand fate and transport during waterflows a including open-field precipitation, throughfall, runoff. concentrations throughfall are 1.5–2 times levels rainfall. However, deposition contributed by rainfall is comparable due water interception vegetative biomasses. Runoff from forest shows nearly one order magnitude lower concentration than those throughfall. contrast positive Δ199Hg Δ200Hg signatures rainfall, exhibits zero signals Δ200Hg, while runoff negative signals. Using binary mixing model, primarily derived atmospheric Hg0 inputs, with average contributions 65 ± 18 91 6%, respectively. The combination flux isotopic modeling suggests that two-thirds Hg2+ input intercepted biomass, remaining captured floor. Overall, these findings shed light on simulation cycle forests.
Language: Английский
Citations
9
Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 22, 2025
Vegetation assimilation of atmospheric gaseous elemental mercury (GEM) represents the largest dry deposition pathway in global terrestrial ecosystems. This study investigated Hg accumulation mechanisms deciduous broadleaves and evergreen needles, focusing on how ecophysiological strategies─reflected by δ13C, δ18O, leaf mass per area, matter content-mediated accumulation. Results showed that leaves exhibited higher total (THg) concentrations rates (THgrate), which were 85.3 ± 17.7 110.0 0.3% than those needles. The two tree types distinct strategies: broadleaves, with stomatal conductance photosynthetic rates, rapidly adjust stomata to changes meteorological pollutant factors, playing a key role controlling THgrate. In contrast, needles featured stable control, highlighting direct positive effect GEM their Precipitation wind speed negatively influenced foliar Correlations between PM2.5, NO2, THgrate suggested synergistic patterns pollutants. underscores across functional emphasizes importance species-specific strategies. An empirical model linking ecophysiological, meteorological, pollution factors was provided, contributing refinement models.
Language: Английский
Citations
1
Applied Geochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 106320 - 106320
Published: Feb. 1, 2025
Language: Английский
Citations
1
Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 269, P. 115779 - 115779
Published: Dec. 6, 2023
Mercury (Hg) is a serious metal environmental pollutant. HgCl
Language: Английский
Citations
19
Earth-Science Reviews, Journal Year: 2024, Volume and Issue: 250, P. 104681 - 104681
Published: Jan. 18, 2024
Language: Английский
Citations
8
National Science Review, Journal Year: 2024, Volume and Issue: 11(9)
Published: July 29, 2024
ABSTRACT In the past decade, China has motivated proactive emission control measures that have successfully reduced emissions of many air pollutants. For atmospheric mercury, which is a globally transported neurotoxin, much less known about long-term changes in its concentrations and anthropogenic China. this study, over decade continuous observations at four Chinese sites show gaseous elemental mercury (GEM) continuously increased until early 2010s, followed by significant declines rates 1.8%–6.1% yr−1 2022. The GEM decline from 2013 to 2022 (by 38.6% ± 12.7%) coincided with decreasing criteria pollutants were larger than those observed elsewhere northern hemisphere (5.7%–14.2%). co-benefits contributed Hg led We estimated 38%–50% (116–151 tons) using machine-learning relationship models.
Language: Английский
Citations
8
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: May 27, 2024
Abstract Mercury (Hg), a potent neurotoxin posing risks to human health, is cycled through vegetation uptake, which susceptible climate change impacts. However, the extent and pattern of these impacts are largely unknown, obstructing predictions Hg’s fate in terrestrial ecosystems. Here, we evaluate effects on elemental Hg [Hg(0)] uptake using state-of-the-art global model (CLM5-Hg) that incorporates plant physiology. In business-as-usual scenario, Hg(0) sink predicted decrease by 1870 Mg yr −1 2100, ~60% lower than present-day condition. We find potential decoupling between trends CO 2 assimilation process 21st century, caused decreased stomatal conductance with increasing . This implies substantial influx into aquatic ecosystems, an elevated threat warrants consideration during evaluation effectiveness Minamata Convention.
Language: Английский
Citations
7
Coasts, Journal Year: 2024, Volume and Issue: 4(1), P. 89 - 107
Published: Feb. 4, 2024
In the 1970s, discovery of much higher mercury (Hg) concentrations in Mediterranean fish than related species same size from Atlantic Ocean raised serious concerns about possible health effects neurotoxic monomethylmercury (MMHg) on end consumers. After 50 years, cycling and fluxes different chemical forms metal between air, land, marine environments are still not well defined. However, current knowledge indicates that anomalous Hg accumulation organisms is mainly due to re-mineralization organic material, which favors activity methylating microorganisms increases MMHg low-oxygen waters. The compound efficiently bio-concentrated by very small phytoplankton cells, develop oligotrophic phosphorous-limited waters then transferred grazing zooplankton. enhanced bioavailability together with slow growth more complex longer food webs could be responsible for its tuna other long-lived predatory species. Sea a “hotspot” climate change has rich biodiversity, increasing temperature, salinity, acidification, stratification seawater will likely reduce primary production composition plankton communities. These changes affect at lower trophic levels biomagnification along web; however, difficult predict. increased evasion gaseous elemental (Hg°) warming surface productivity decrease availability biotic (and possibly abiotic) methylation processes, but oxygen deep waters, webs, reduced top predators increase their content. Despite uncertainties, regions historically affected inputs anthropogenic geogenic sources, such as those northwestern northern Adriatic Sea, rising levels, river flooding, storms favor mobilization matter maintain high bioaccumulation rates long time. Long-term studies will, therefore, necessary evaluate impact continental basin, air–sea exchanges, communities, formation webs. this context, safeguard heavy consumers local seafood, it appears information campaigns, promote initiatives consumption organize large-scale surveys hair or urine most exposed population groups.
Language: Английский
Citations
6