An assessment of mercury and its dietary drivers in fur of Arctic wolves from Greenland and High Arctic Canada.

Gabriele Treu; Mikkel Holger S. Sinding; Gábor Á.  Czirják; Rune Dietz; Thomas  Gräff; Oliver  Krone; Ulf Marquard-Petersen; Johan B Mikkelsen; Ralf Schulz; Christian Sonne; Jens Søndergaard; Jiachen Sun; Jochen Zubrod; Igor Eulaers

doi:10.1016/j.scitotenv.2022.156171

An assessment of mercury and its dietary drivers in fur of Arctic wolves from Greenland and High Arctic Canada.

Gabriele Treu^*, Mikkel Holger S. Sinding, Gábor Á. Czirják, Rune Dietz, Thomas Gräff, Oliver Krone, Ulf Marquard-Petersen, Johan B Mikkelsen, Ralf Schulz, Christian Sonne, Jens Søndergaard, Jiachen Sun, Jochen Zubrod, Igor Eulaers^*

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

4 Citationer (Scopus)

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Abstract

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 (δ ¹⁵N and δ ¹³C, 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.

Originalsprog	Engelsk
Artikelnummer	156171
Tidsskrift	Science of the Total Environment
Vol/bind	838
Antal sider	9
ISSN	0048-9697
DOI	https://doi.org/10.1016/j.scitotenv.2022.156171
Status	Udgivet - sep. 2022

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10.1016/j.scitotenv.2022.156171Licens: CC BY

Treu et al 2022 STEForlagets udgivne version, 0,99 MBLicens: CC BY

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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, 838, Artikel 156171. https://doi.org/10.1016/j.scitotenv.2022.156171

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title = "An assessment of mercury and its dietary drivers in fur of Arctic wolves from Greenland and High Arctic Canada.",

abstract = "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 (δ 15N and δ 13C, 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.",

keywords = "Dietary ecology, Museum collection, Stable isotope, Top predator, risk assessment",

author = "Gabriele Treu and Sinding, {Mikkel Holger S.} and Czirj{\'a}k, {G{\'a}bor {\'A}.} and Rune Dietz and Thomas Gr{\"a}ff and Oliver Krone and Ulf Marquard-Petersen and Mikkelsen, {Johan B} and Ralf Schulz and Christian Sonne and Jens S{\o}ndergaard and Jiachen Sun and Jochen Zubrod and Igor Eulaers",

year = "2022",

month = sep,

doi = "10.1016/j.scitotenv.2022.156171",

language = "English",

volume = "838",

journal = "Science of the Total Environment",

issn = "0048-9697",

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Treu, G, Sinding, MHS, Czirják, GÁ, Dietz, R, Gräff, T, Krone, O, Marquard-Petersen, U, Mikkelsen, JB, 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, bind 838, 156171. https://doi.org/10.1016/j.scitotenv.2022.156171

An assessment of mercury and its dietary drivers in fur of Arctic wolves from Greenland and High Arctic Canada. / Treu, Gabriele; Sinding, Mikkel Holger S.; Czirják, Gábor Á. et al.
I: Science of the Total Environment, Bind 838, 156171, 09.2022.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

TY - JOUR

T1 - An assessment of mercury and its dietary drivers in fur of Arctic wolves from Greenland and High Arctic Canada.

AU - Treu, Gabriele

AU - Sinding, Mikkel Holger S.

AU - Czirják, Gábor Á.

AU - Dietz, Rune

AU - Gräff, Thomas

AU - Krone, Oliver

AU - Marquard-Petersen, Ulf

AU - Mikkelsen, Johan B

AU - Schulz, Ralf

AU - Sonne, Christian

AU - Søndergaard, Jens

AU - Sun, Jiachen

AU - Zubrod, Jochen

AU - Eulaers, Igor

PY - 2022/9

Y1 - 2022/9

N2 - 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 (δ 15N and δ 13C, 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.

AB - 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 (δ 15N and δ 13C, 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.

KW - Dietary ecology

KW - Museum collection

KW - Stable isotope

KW - Top predator, risk assessment

UR - http://www.scopus.com/inward/record.url?scp=85131081527&partnerID=8YFLogxK

U2 - 10.1016/j.scitotenv.2022.156171

DO - 10.1016/j.scitotenv.2022.156171

M3 - Journal article

C2 - 35613645

SN - 0048-9697

VL - 838

JO - Science of the Total Environment

JF - Science of the Total Environment

M1 - 156171

ER -

An assessment of mercury and its dietary drivers in fur of Arctic wolves from Greenland and High Arctic Canada.

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