An assessment of mercury and its dietary drivers in fur of Arctic wolves from Greenland and High Arctic Canada
| Autor: | Gabriele Treu, Mikkel-Holger S. Sinding, Gábor Á. Czirják, Rune Dietz, Thomas Gräff, Oliver Krone, Ulf Marquard-Petersen, Johan Brus Mikkelsen, Ralf Schulz, Christian Sonne, Jens Søndergaard, Jiachen Sun, Jochen Zubrod, Igor Eulaers |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Water Pollutants
Chemical/analysis [MeSH] Arctic Regions [MeSH] Stable isotope Pollution Museum collection Environmental Chemistry Animals [MeSH] Dietary ecology Environmental Engineering Environmental Monitoring [MeSH] Mercury/analysis [MeSH] Canada [MeSH] Wolves [MeSH] risk assessment Food Chain [MeSH] Greenland [MeSH] Waste Management and Disposal Top predator Canada Food Chain Wolves Arctic Regions Greenland Mercury Top predator risk assessment Animals Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Treu, G, Sinding, M H S, Czirják, G Á, Dietz, R, Gräff, T, Krone, O, Marquard-Petersen, U, Mikkelsen, J B, Schulz, R, Sonne, C, Søndergaard, J, Sun, J, Zubrod, J & Eulaers, I 2022, ' An assessment of mercury and its dietary drivers in fur of Arctic wolves from Greenland and High Arctic Canada ', Science of the Total Environment, vol. 838, no. 2, 156171 . https://doi.org/10.1016/j.scitotenv.2022.156171 Treu, G, Sinding, M H S, Czirják, G Á, Dietz, R, Gräff, T, Krone, O, Marquard-Petersen, U, Mikkelsen, J B, Schulz, R, Sonne, C, Søndergaard, J, Sun, J, Zubrod, J & Eulaers, I 2022, ' An assessment of mercury and its dietary drivers in fur of Arctic wolves from Greenland and High Arctic Canada. ', Science of the Total Environment, vol. 838, 156171 . https://doi.org/10.1016/j.scitotenv.2022.156171 |
| DOI: | 10.1016/j.scitotenv.2022.156171 |
| Popis: | Mercury has become a ubiquitous hazardous element even ending up in pristine areas such as the Arctic, where it biomagnifies and leaves especially top predators vulnerable to potential health effects. Here we investigate total mercury (THg) concentrations and dietary proxies for trophic position and habitat foraging (δ15N and δ13C, respectively) in fur of 30 Arctic wolves collected during 1869–1998 in the Canadian High Arctic and Greenland. Fur THg concentrations (mean ± SD) of 1.46 ± 1.39 μg g −1 dry weight are within the range of earlier reported values for other Arctic terrestrial species. Based on putative thresholds for Hg-mediated toxic health effects, the studied Arctic wolves have most likely not been at compromised health. Dietary proxies show high dietary plasticity among Arctic wolves deriving nutrition from both marine and terrestrial food sources at various trophic positions. Variability in THg concentrations seem to be related to the wolves' trophic position rather than to different carbon sources or regional differences (East Greenland, the Foxe Basin and Baffin Bay area, respectively). Although the present study remains limited due to the scarce, yet unique historic study material and small sample size, it provides novel information on temporal and spatial variation in Hg pollution of remote Arctic species. |
| Databáze: | OpenAIRE |
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