Gantner, Nikolaus; Veillette, Julie; Michaud, Wendy K; Bajno, Robert; Muir, Derek C G; Vincent, Warwick C; Power, Michael; Dixon, Brian; Reist, James D; Hausmann, Sonja; Pienitz, Reinhard (2012): Water chemistry, and biological traits and mercury content of Salvelinus alpinus and S. namaycush in Laflamme and Pingualuit lake [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.810120, Supplement to: Gantner, N et al. (2012): Physical and biological factors affecting mercury and perfluorinated contaminants in arctic char (Salvelinus alpinus) of Pingualuit Crater Lake (Nunavik, Canada). Arctic, 65(2), 195-206, https://doi.org/10.14430/arctic4200
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Abstract:
Pingualuk Lake fills a deep crater in the Parc National des Pingualuit on the Ungava Peninsula (Nunavik, Canada) and is isolated from nearby surface waters. The main objectives of this study were to determine and compare the concentrations of two atmospherically derived contaminants, mercury and perfluorinated chemicals (PFCs), in the lake water column and fish of Pingualuk Lake and to assess the physical and biological factors influencing contaminant concentrations. Mercury concentrations in arctic char muscle tissue were comparable to those of char in other Arctic lakes, while the total amount of PFCs was below reported levels for remote lakes in the Arctic and elsewhere. Stable isotope and stomach content analyses were made to investigate the feeding ecology of the Pingualuk Lake arctic char population and indicated the possibility of multiple feeding groups. Genetics characteristics (MH and mtDNA) of fish from Pingualuk Lake revealed that this population is likely distinct from that of nearby Laflamme Lake. However, both arctic char populations exhibit differential variation of their allele families. Physical characteristics determined for Lake Pingualuk revealed that the water column was inversely stratified beneath the ice and extremely transparent to visible and ultraviolet radiation. The highest mercury concentrations (3- 6 pg/mL THg) occurred just beneath the ice surface in each lake. Pingualuk Lake, given its near pristine state and exceptional limnological features, may serve as a most valuable reference ecosystem for monitoring environmental stressors, such as contaminants, in the Arctic.
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Coverage:
Median Latitude: 61.300000 * Median Longitude: -73.685000 * South-bound Latitude: 61.280000 * West-bound Longitude: -73.710000 * North-bound Latitude: 61.320000 * East-bound Longitude: -73.660000
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Gantner, N; Veillette, J; Michaud, WK et al. (2012): (Table 1) Age, fork length, tissue d15N and mercury content of arctic char (S. alpinus) and lake trout (S. namaycush) in Laflamme and Pingualuit lake. https://doi.org/10.1594/PANGAEA.810118
- Gantner, N; Veillette, J; Michaud, WK et al. (2012): (Table 2) Selected surface water chemistry of Laflamme and Pingualuit lake. https://doi.org/10.1594/PANGAEA.810119