Climate-Driven Alterations in the Mercury Cycle: Implications for Wildlife Managers Through a One Health Lens

Land, Год журнала: 2025, Номер 14(4), С. 856 - 856

Опубликована: Апрель 14, 2025

Mercury (Hg) is a naturally occurring element, but atmospheric Hg has increased due to human activities since the industrial revolution. When deposited in aquatic environments, can be converted methyl mercury (MeHg), which bioaccumulates ecosystems and cause neurologic endocrine disruption high quantities. While higher levels do not always translate contamination wildlife, museum specimens over past 2 centuries have documented an increase species that feed at trophic levels. Increased exposure pollutants presents additional threat fish wildlife populations already facing habitat loss or degradation global change. Additionally, cycling bioaccumulation are primarily driven by geophysical, ecological, biogeochemical processes environment, all of may modulated climate In this review, we begin describing where, when, how cycle altered change impact MeHg. Next, summarize observed physiological effects MeHg identify future vulnerabilities. We illustrate implications for managers through case study conclude suggesting key areas management action mitigate harmful conserve habitats amid

Язык: Английский

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Historical shifts in mercury deposition in northeastern China: From vegetation to human activity

Environmental Pollution, Год журнала: 2025, Номер 374, С. 126290 - 126290

Опубликована: Апрель 19, 2025

Язык: Английский

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Arctic Warming: Cascading Climate Impacts and Global Consequences

Climate, Год журнала: 2025, Номер 13(5), С. 85 - 85

Опубликована: Апрель 27, 2025

The Arctic is undergoing unprecedented transformations with implications for regional ecosystems, Indigenous communities, and global climate systems. Ocean heat transport, permafrost thawing, ice–albedo interactions are some of the feedback mechanisms that contribute to increase in average temperatures Arctic. These processes risks associated change globally by speeding up loss sea ice, changes biodiversity, greenhouse gas emissions. This review synthesises recent advances science, focusing on drivers amplification, its cascading impacts ecosystems socioeconomic systems, emerging governance challenges. It highlights critical knowledge gaps, specifically regarding importance interdisciplinary approaches adaptation strategies. study emphasises need inclusive, transformative, collaborative analysing frameworks, policies, community resilience initiatives. Innovative strategies suggested, such as ecosystem-based adaptations, climate-resilient infrastructure, switch renewable energy address these issues. Arctic-specific recommendations proposed develop sustainable solutions preserve ecology while reducing effects filling research gaps promoting international collaboration. future not merely a issue but also one, requiring swift coordinated action

Язык: Английский

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Media coverage of contaminants in pilot whales in the Faroe Islands

International Journal of Circumpolar Health, Год журнала: 2025, Номер 84(1)

Опубликована: Июнь 5, 2025

This study examines the portrayal of contaminants in pilot whale Faroese media from 1977 to 2022. Pilot is integral culture but has come under scrutiny due health concerns linked contaminants. Given role shaping public understanding risks, our research assesses how four main outlets have presented issue public. We analysed 227 newspaper articles, radio, and television news stories, focusing on contaminants, mentioning scientific studies or researchers, demographic groups identified as at risk, mentions government advisories meat consumption. Our findings indicate a predominant harmful, with substantial emphasis risks developing foetuses children. Scientific studies, particularly those led by Department Occupational Medicine Public Health Faroe Islands, were frequently cited. Despite varying over years, narrative consistently highlighted associated contributes broader discussions environmental communication illustrating localised coverage can shape risk perception, offering insights relevant communities facing similar dilemmas between traditional hunting health.

Язык: Английский

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Climate change dynamics and mercury temporal trends in Northeast Arctic cod (Gadus morhua) from the Barents Sea ecosystem

Environmental Pollution, Год журнала: 2023, Номер 338, С. 122706 - 122706

Опубликована: Окт. 9, 2023

The Northeast Arctic cod (Gadus morhua) is the world's northernmost stock of Atlantic and considerable ecological economic importance. are widely distributed in Barents Sea, an environment that supports a high degree ecosystem resiliency food web complexity. Here using 121 years ocean temperature data (1900-2020), 41 sea ice extent information (1979-2020) 27 total mercury (Hg) fillet concentration (1994-2021, n = 1999, ≥71% Methyl Hg, 20) from Sea ecosystem, we evaluate effects climate change dynamics on Hg temporal trends cod. We observed low consistently stable, concentrations (yearly, least-square means range 0.022-0.037 mg/kg wet wt.) length-normalized fish, with slight decline most recent sampling periods despite significant increase temperature, sharp regional extent. Overall, our suggest amplification "Atlantification," other perturbations along rapidly declining over last ∼30 did not translate into major increases or decreases bioaccumulation Our findings consistent similar long-term, assessments inhabiting Oslofjord, Norway, investigations empirical for marine apex predators. This demonstrates highly context specific, some species may be as sensitive to current change-contaminant interactions currently thought. Fish bioaccumulation-climate relationships complex uniform, predators can vary considerably within among species, geographically. regimes biota nuanced likely driven by suite factors such local diets, sources bioenergetics, toxicokinetic processing, growth metabolic rates individuals taxa, inputs anthropogenic activities at varying spatiotemporal scales. Collectively, these have important policy implications global security, Minamata Convention Mercury, several relevant UN Sustainable Development Goals.

Язык: Английский

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Circumpolar assessment of mercury contamination: the Adélie penguin as a bioindicator of Antarctic marine ecosystems

Ecotoxicology, Год журнала: 2023, Номер 32(8), С. 1024 - 1049

Опубликована: Окт. 1, 2023

Язык: Английский

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Distribution pattern of mercury in northern Barents Sea and Eurasian Basin surface sediment

Marine Pollution Bulletin, Год журнала: 2022, Номер 185, С. 114272 - 114272

Опубликована: Окт. 30, 2022

Marine sediment is a significant sink for the global pollutant mercury. In rapidly changing Arctic region, mercury (Hg) bioaccumulation in marine ecosystem remains prominent environmental issue. Here, we report surface (0-2 cm) concentrations of Hg and other toxic elements interest (Cr, Ni, Zn, Cu, As, Cd, Pb) northern Barents Sea Eurasian Basin. We observed average 65 ± 23 ng/g with highest concentration 116 Our calculated enrichment factors suggest low anthropogenic mercury, chromium, nickel, copper. Mercury trace element geographic patterns are best explained by origin transportation fine grain towards Basin, scavenging both particulate organic carbon metal oxides as delivery mechanisms.

Язык: Английский

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Ecological Drivers of Mercury Bioaccumulation in Fish of a Subarctic Watercourse

Environmental Toxicology and Chemistry, Год журнала: 2023, Номер 42(4), С. 873 - 887

Опубликована: Фев. 2, 2023

Abstract Mercury (Hg) is a serious concern for aquatic ecosystems because it may biomagnify to harmful concentrations within food webs and consequently end up in humans that eat fish. However, the trophic transfer of mercury through web be impacted by several factors related network complexity ecology species present. The present study addresses interplay between contamination fish communities two lakes pollution‐impacted subarctic watercourse, exploring role both horizontal (feeding habitat) vertical (trophic position) characteristics as drivers Hg are located upper lower parts with site closer to, downstream from, main pollution source. have complex dominated coregonids (polymorphic whitefish invasive vendace) piscivorous species. Analyses habitat use, stomach contents, stable isotope signatures (δ 15 N, δ 13 C) revealed similar structures except few differences chiefly ecological effects vendace. piscivores had higher than invertebrate‐feeding Concentrations increased size age vendace, whereas were minor importance. Most showed significant lakes, highest values typically found where biomagnification rate also was higher. levels included exceed health authorization limits, possible negative implications fishing human consumption. Our findings accentuate importance acquiring detailed knowledge can magnify how these vary among systems, provide scientific basis adequate management strategies. Environ Toxicol Chem 2023;42:873–887. © 2023 SETAC

Язык: Английский

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Mercury at the top of the world: A 31-year record of mercury in Arctic char in the largest High Arctic lake, linked to atmospheric mercury concentrations and climate oscillations

Environmental Pollution, Год журнала: 2023, Номер 337, С. 122466 - 122466

Опубликована: Сен. 7, 2023

Язык: Английский

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Ecosystem Mercury Recovery and Health Benefit Under the Minamata Convention in a Changing Climate

Reviews of Environmental Contamination and Toxicology, Год журнала: 2022, Номер 260(1)

Опубликована: Дек. 1, 2022

Язык: Английский

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