Modelling Pb, Zn and As transfer from terrestrial to aquatic ecosystems during the ice-free season in three Pyrenean catchments

Bacardit, Montserrat; Camarero, Lluís

doi:10.1016/j.scitotenv.2010.07.088

Cited by 15 publications

(17 citation statements)

References 34 publications

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“…Organic soil erosion has been shown to be a source of stored contaminants (i.e. Pb) to lakes in Bassiès valley (Bacardit et al, 2012), especially Pb stored from leaded gasoline contamination over the last century, contributing to contamination up to present time (Bacardit and Camarero, 2010). From the Middle Ages to AD 1900 − 1930, the Pb isotope ratios in the EM core were aligned between two end-members that were the signature of Aulus-les-Bains mining district ores and the signature of the bottom of the EM core used as the natural reference (Fig.…”

Section: Remobilization Of Ancient Stored Pbmentioning

confidence: 99%

“…Remobilization of contaminants stored in mountain organic soils can influence contaminant loads in fluvial systems and downstream mountain lakes (Kaste et al, 2003). Watershed inventories of PHTE have shown that Pb related to industries and leaded gasoline, and Pb stored in Pyrenean soils, was remobilized and transferred to downstream lakes several years after the contamination occurred (Bacardit and Camarero, 2010). The quality of lake sediments and water could therefore be impacted by remobilized PHTE which could also be further transferred into the aquatic food chains.…”

Section: Introductionmentioning

confidence: 99%

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Atmospheric and terrigenous metal accumulation over 3000 years in a French mountain catchment: Local vs distal influences

et al. 2017

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In this paper we report analyses of four peat cores taken from a mountain valley in the French Pyrenees where ancient metallurgical and agro-pastoral activities have occurred. By combining a range of geochemical and chronological proxies we investigated (1) the importance of PHTE (Potentially Harmful Trace Element) accumulation during pre-industrial times compared to recent accumulation, and (2) the intimate relationship between landscape use and terrestrial PHTE transfers. We show how long human-environment interaction in mountain environments and pre-industrial anthropogenic activities led to PHTE accumulation equal to or even exceeding that of modern times. Atmospheric contamination by PHTE occurred throughout 500 BC − AD 500 for lead (Pb) and antimony (Sb), AD 1200-1600 for only Pb, and the last 150 years for Pb, Sb and copper (Cu) combined. Lead isotopes allowed determination of the impact of Pb contamination from significant local mining and metallurgical activities during the Middle Ages. An estimation of PHTE inventories derived from atmospheric deposition suggests that 85% of Pb accumulation occurred before AD 1800, thus highlighting the influence of past local activities to the accumulation of atmospheric contaminants compared to that of more recent periods. Enhanced erosion input to one of the mires is evident from AD 1600 to 1950, and intensive grazing coupled with forest clearings are the likely cause of these rapid transfers of natural PHTE and previously stored Pb to downstream mires. Remobilized Pb in the impacted peatland represent at least one third of the total Pb-inventory, suggesting that terrestrial transfers were important and acting as hotspot sources of PHTE accumulation.

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Section: Remobilization Of Ancient Stored Pbmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Atmospheric and terrigenous metal accumulation over 3000 years in a French mountain catchment: Local vs distal influences

et al. 2017

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“…Thus, humans and animals could face a risk of exposure to trace metals. With rapid climate and environmental changes, especially increased extreme climatic events, the trace metals accumulated in soils can be remobilized by intense grazing activities, soil erosion, or acidification, causing secondary pollution input (Bacardit and Camarero, 2010;Hansson et al, 2017;Le Roux et al, 2020). Therefore, there is urgency to assess the contamination characteristics of soil trace metals and uncover their potential drivers in mountain regions.…”

Section: Introductionmentioning

confidence: 99%

Trace metal contamination in soils from mountain regions across China: spatial distribution, sources, and potential drivers

et al. 2021

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Trace metal contamination in soils is a threat with an uncertain limit to maintain planet safety, and the issue of trace metal contamination in mountain soils is still of low concerned. In this study, we assessed the contamination of six trace metals (Cd, Cr, Cu, Ni, Pb, and Zn) in mountain soils across China and deciphered the potential drivers of their spatial distribution. The results showed that concentrations of Cd and Pb decreased significantly with soil depth, and their concentrations were markedly higher in northwest, south, and southwest China than elsewhere. Among the metals, Cd was the priority for control with moderate to heavy contamination, followed by Pb, whereas the other metals did not show evident contamination. The altitudinal pattern and isotopic tracing revealed that the significant enrichment and marked contamination of Cd and Pb in surface soils were primarily attributed to deposition through long-range transboundary atmospheric transport and condensation. Ore mining, nonferrous smelting, and coal and fuel combustion were identified as primary anthropogenic sources of the Cd and Pb. Soil organic matter content, pH, and soil forming processes directly determined the accumulation of trace metals in the soils, and orographic effects, including local climate, vegetation composition, and canopy filtering, regulated the spatial distribution of the metals. This study highlights the significance of soil Cd contamination in mountains, which are considered of low concern, and suggests that long-term monitoring of trace metal contamination is necessary to improve biogeochemical models that evaluate the responses of the mountain critical zone to future human-and climate-induced environmental changes.

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“…Klaminder et al (2010) demonstrated that the levels of contaminant deposited in some subarctic lake sediment was not largely affected by the >90% reduction in global Pb deposition after 1970, likely because of the increased terrestrial erosion caused by climate change. Similarly, the reconstructed metal accumulation in Pyrenean lakes sediments suggest that legacy Pb and As contamination accumulated in catchments is actively transported to the lakes during summers (Bacardit and Camarero, 2010). In three Alaskan lakes within the same region, the trends, behavior, and controls on sediment Hg accumulation in response to climate warming were different from one lake to another because of the specific environmental factors and the changing importance of legacy pollution remobilization at each site (Burke et al, 2018).…”

Section: Remobilisation Of Legacy Pollutantsmentioning

confidence: 96%

“…Studies have suggested that the retention of pollutants in lake catchments can delay reductions in metal loading to lakes in response to decreasing atmospheric emissions, particularly for lakes with a large catchment area relative to the lake area (Yang, 2015;Yang et al, 2018). Furthermore, factors such as permafrost degradation, wildfires hydrological changes and organic carbon cycling can further delay ecological recovery by accelerating the remobilization of legacy contaminants from soils (Bacardit and Camarero, 2010;Burke et al, 2018;Macdonald et al, 2005;Whitehead et al, 2009). Environmental drivers of biogeochemical cycling that are independent from anthropogenic Hg and Pb emissions (e.g., those caused by large-scale climate change) need to be understood and quantified to better predict future conditions of exposure of these contaminants to humans and wildlife.…”

Section: Introductionmentioning

confidence: 99%

Paleolimnological characterization of metal(loid) sources and transport processes in Canadian subarctic lakes

Pelletier¹

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Affairs and Northern Development Canada) (NSTP). A lot of my professional and personal development experiences were rendered possible by the support of this funding. More details on the sources of funding are included in individual projects acknowledgment sections at the end of chapters three to six. An enormous thank you to the Department of Geography and Environmental Studies (DGES) atCarleton who not only funded my tuition, but also allowed me to be surrounded by exceptionally intelligent and talented people. The DGES holds some of the brightest researchers studying northern Canada and I am very proud to be part of the 2021 vintage of the DGES.Thanks to the many lab assistants who helped collect data for this thesis. The number of names in this paragraph is a demonstration that I am a cog in a much larger machine. The people I thank are

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Modelling Pb, Zn and As transfer from terrestrial to aquatic ecosystems during the ice-free season in three Pyrenean catchments

Cited by 15 publications

References 34 publications

Atmospheric and terrigenous metal accumulation over 3000 years in a French mountain catchment: Local vs distal influences

Atmospheric and terrigenous metal accumulation over 3000 years in a French mountain catchment: Local vs distal influences

Trace metal contamination in soils from mountain regions across China: spatial distribution, sources, and potential drivers

Paleolimnological characterization of metal(loid) sources and transport processes in Canadian subarctic lakes

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