气候变化领域集成服务门户(CCPortal): Water chemistry, and biological traits and mercury content of Salvelinus alpinus and S. namaycush in Laflamme and Pingualuit lake

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.810120
	Water chemistry, and biological traits and mercury content of Salvelinus alpinus and S. namaycush in Laflamme and Pingualuit lake
	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
发布日期	2012-04-11
数据集类型	dataset
英文简介	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.
空间范围	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
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215535
推荐引用方式 GB/T 7714	Gantner,Nikolaus,Veillette,et al. Water chemistry, and biological traits and mercury content of Salvelinus alpinus and S. namaycush in Laflamme and Pingualuit lake.2012-04-11.https://doi.org/10.1594/PANGAEA.810120.