(Table 1) Age, fork length, and tissue d15N and element concentration of arctic char (Salvelinus alpinus) from Lake Hazen ...

Arctic char (Salvelinus alpinus L.), the top predator in High Arctic lakes, often is used as a bioindicator of Hg contamination in Arctic aquatic ecosystems. The present study investigated effects of trophic position, size, and age of Arctic char in Lake Hazen, the largest lake in the Canadian High...

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Bibliographic Details
Main Authors: Gantner, Nikolaus, Power, Michael, Babaluk, John A, Reist, James D, Köck, Günther, Lockhart, Lyle W, Solomon, Keith R, Muir, Derek C G
Format: Dataset
Language:English
Published: PANGAEA 2009
Subjects:
Morphotype
DATE/TIME
Salvelinus alpinus
Salvelinus alpinus, age
Salvelinus alpinus, standard deviation
Salvelinus alpinus, fork length
Salvelinus alpinus, δ15N, tissue
Mercury
Caesium
Potassium
Selenium
Thallium
Biological sample
Otolith analysis
Continuous Flow Isotope Ratio Mass Spectrometry CF/IRMS
Atomic absorption spectrometry AAS of cold vapor
Inductively coupled plasma - mass spectrometry ICP-MS
International Polar Year 2007-2008 IPY
International Polar Year
IPY
Lake Hazen
Online Access:https://dx.doi.org/10.1594/pangaea.810105
https://doi.pangaea.de/10.1594/PANGAEA.810105
Description
Summary:Arctic char (Salvelinus alpinus L.), the top predator in High Arctic lakes, often is used as a bioindicator of Hg contamination in Arctic aquatic ecosystems. The present study investigated effects of trophic position, size, and age of Arctic char in Lake Hazen, the largest lake in the Canadian High Arctic (81°50'N, 70°25'W), on Hg bioaccumulation. In addition, several essential (Se, K) and nonessential elements (Tl, Cs) in char muscle tissue were examined to compare their behavior to that of Hg. Trophic position of Arctic char was identified by stable isotope (d15N) signature. Temporal trends of Hg from seven sampling campaigns over a 16-year period (1990-2006) were investigated for the overall data and for one trophic class. Concentrations of Hg were not correlated with age but were positively related to fork length and trophic position. Large char with greater d15N signatures (>12 per mil) had larger Hg concentrations (0.09-1.63 µg/g wet wt) than small char with smaller d15N signatures (<12 per mil, ... : The 1990 stable isotope data is estimated based on 1992 relationship of length and d15N (y = 19.661x - 40.16). Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...

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