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Rune Dietz

Two Decades of Mercury Concentrations in Barents Sea Polar Bears (Ursus maritimus) in Relation to Dietary Carbon, Sulfur, and Nitrogen

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Standard

Two Decades of Mercury Concentrations in Barents Sea Polar Bears (Ursus maritimus) in Relation to Dietary Carbon, Sulfur, and Nitrogen. / Lippold, Anna; Aars, Jon; Andersen, Magnus; Aubail, Aurore; Derocher, Andrew E.; Dietz, Rune; Eulaers, Igor; Sonne, Christian; Welker, Jeffrey M.; Wiig, Øystein; Routti, Heli.

I: Environmental Science & Technology, Bind 54, Nr. 12, 06.2020, s. 7388-7397.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Lippold, A, Aars, J, Andersen, M, Aubail, A, Derocher, AE, Dietz, R, Eulaers, I, Sonne, C, Welker, JM, Wiig, Ø & Routti, H 2020, 'Two Decades of Mercury Concentrations in Barents Sea Polar Bears (Ursus maritimus) in Relation to Dietary Carbon, Sulfur, and Nitrogen', Environmental Science & Technology, bind 54, nr. 12, s. 7388-7397. https://doi.org/10.1021/acs.est.0c01848

APA

Lippold, A., Aars, J., Andersen, M., Aubail, A., Derocher, A. E., Dietz, R., Eulaers, I., Sonne, C., Welker, J. M., Wiig, Ø., & Routti, H. (2020). Two Decades of Mercury Concentrations in Barents Sea Polar Bears (Ursus maritimus) in Relation to Dietary Carbon, Sulfur, and Nitrogen. Environmental Science & Technology, 54(12), 7388-7397. https://doi.org/10.1021/acs.est.0c01848

CBE

Lippold A, Aars J, Andersen M, Aubail A, Derocher AE, Dietz R, Eulaers I, Sonne C, Welker JM, Wiig Ø, Routti H. 2020. Two Decades of Mercury Concentrations in Barents Sea Polar Bears (Ursus maritimus) in Relation to Dietary Carbon, Sulfur, and Nitrogen. Environmental Science & Technology. 54(12):7388-7397. https://doi.org/10.1021/acs.est.0c01848

MLA

Vancouver

Lippold A, Aars J, Andersen M, Aubail A, Derocher AE, Dietz R o.a. Two Decades of Mercury Concentrations in Barents Sea Polar Bears (Ursus maritimus) in Relation to Dietary Carbon, Sulfur, and Nitrogen. Environmental Science & Technology. 2020 jun;54(12):7388-7397. https://doi.org/10.1021/acs.est.0c01848

Author

Lippold, Anna ; Aars, Jon ; Andersen, Magnus ; Aubail, Aurore ; Derocher, Andrew E. ; Dietz, Rune ; Eulaers, Igor ; Sonne, Christian ; Welker, Jeffrey M. ; Wiig, Øystein ; Routti, Heli. / Two Decades of Mercury Concentrations in Barents Sea Polar Bears (Ursus maritimus) in Relation to Dietary Carbon, Sulfur, and Nitrogen. I: Environmental Science & Technology. 2020 ; Bind 54, Nr. 12. s. 7388-7397.

Bibtex

@article{8fe28d54f897469e9c2fa85cce3ac777,
title = "Two Decades of Mercury Concentrations in Barents Sea Polar Bears (Ursus maritimus) in Relation to Dietary Carbon, Sulfur, and Nitrogen",
abstract = "Temporal trends of total mercury (THg) were examined in female polar bear (Ursus maritimus) hair (n = 199) from the Barents Sea in 1995-2016. In addition, hair values of stable isotopes (n = 190-197) of carbon (δ13C), sulfur (δ34S), and nitrogen (δ15N) and information on breeding status, body condition, and age were obtained. Stable isotope values of carbon and sulfur reflect dietary source (e.g., marine vs terrestrial) and the nitrogen trophic level. Values for δ13C and δ34S declined by -1.62 and -1.18‰ over the time of the study period, respectively, while values for δ15N showed no trend. Total Hg concentrations were positively related to both δ13C and δ34S. Yearly median THg concentrations ranged from 1.61 to 2.75 μg/g and increased nonlinearly by 0.86 μg/g in total over the study. Correcting THg concentrations for stable isotope values of carbon and sulfur and additionally breeding status and age slightly accelerated the increase in THg concentrations; however, confidence intervals of the raw THg trend and the corrected THg trend had substantial overlap. The rise in THg concentrations in the polar bear food web was possibly related to climate-related re-emissions of previously stored Hg from thawing sea-ice, glaciers, and permafrost.",
keywords = "ARCTIC MARINE, ATMOSPHERIC MERCURY, BARNACLE GEESE, FEEDING-HABITS, FOOD WEBS, GASEOUS MERCURY, SOUTHERN BEAUFORT SEA, STABLE-ISOTOPES, SVALBARD, TEMPORAL TRENDS",
author = "Anna Lippold and Jon Aars and Magnus Andersen and Aurore Aubail and Derocher, {Andrew E.} and Rune Dietz and Igor Eulaers and Christian Sonne and Welker, {Jeffrey M.} and {\O}ystein Wiig and Heli Routti",
year = "2020",
month = jun,
doi = "10.1021/acs.est.0c01848",
language = "English",
volume = "54",
pages = "7388--7397",
journal = "Environmental Science & Technology (Washington)",
issn = "0013-936X",
publisher = "AMER CHEMICAL SOC",
number = "12",

}

RIS

TY - JOUR

T1 - Two Decades of Mercury Concentrations in Barents Sea Polar Bears (Ursus maritimus) in Relation to Dietary Carbon, Sulfur, and Nitrogen

AU - Lippold, Anna

AU - Aars, Jon

AU - Andersen, Magnus

AU - Aubail, Aurore

AU - Derocher, Andrew E.

AU - Dietz, Rune

AU - Eulaers, Igor

AU - Sonne, Christian

AU - Welker, Jeffrey M.

AU - Wiig, Øystein

AU - Routti, Heli

PY - 2020/6

Y1 - 2020/6

N2 - Temporal trends of total mercury (THg) were examined in female polar bear (Ursus maritimus) hair (n = 199) from the Barents Sea in 1995-2016. In addition, hair values of stable isotopes (n = 190-197) of carbon (δ13C), sulfur (δ34S), and nitrogen (δ15N) and information on breeding status, body condition, and age were obtained. Stable isotope values of carbon and sulfur reflect dietary source (e.g., marine vs terrestrial) and the nitrogen trophic level. Values for δ13C and δ34S declined by -1.62 and -1.18‰ over the time of the study period, respectively, while values for δ15N showed no trend. Total Hg concentrations were positively related to both δ13C and δ34S. Yearly median THg concentrations ranged from 1.61 to 2.75 μg/g and increased nonlinearly by 0.86 μg/g in total over the study. Correcting THg concentrations for stable isotope values of carbon and sulfur and additionally breeding status and age slightly accelerated the increase in THg concentrations; however, confidence intervals of the raw THg trend and the corrected THg trend had substantial overlap. The rise in THg concentrations in the polar bear food web was possibly related to climate-related re-emissions of previously stored Hg from thawing sea-ice, glaciers, and permafrost.

AB - Temporal trends of total mercury (THg) were examined in female polar bear (Ursus maritimus) hair (n = 199) from the Barents Sea in 1995-2016. In addition, hair values of stable isotopes (n = 190-197) of carbon (δ13C), sulfur (δ34S), and nitrogen (δ15N) and information on breeding status, body condition, and age were obtained. Stable isotope values of carbon and sulfur reflect dietary source (e.g., marine vs terrestrial) and the nitrogen trophic level. Values for δ13C and δ34S declined by -1.62 and -1.18‰ over the time of the study period, respectively, while values for δ15N showed no trend. Total Hg concentrations were positively related to both δ13C and δ34S. Yearly median THg concentrations ranged from 1.61 to 2.75 μg/g and increased nonlinearly by 0.86 μg/g in total over the study. Correcting THg concentrations for stable isotope values of carbon and sulfur and additionally breeding status and age slightly accelerated the increase in THg concentrations; however, confidence intervals of the raw THg trend and the corrected THg trend had substantial overlap. The rise in THg concentrations in the polar bear food web was possibly related to climate-related re-emissions of previously stored Hg from thawing sea-ice, glaciers, and permafrost.

KW - ARCTIC MARINE

KW - ATMOSPHERIC MERCURY

KW - BARNACLE GEESE

KW - FEEDING-HABITS

KW - FOOD WEBS

KW - GASEOUS MERCURY

KW - SOUTHERN BEAUFORT SEA

KW - STABLE-ISOTOPES

KW - SVALBARD

KW - TEMPORAL TRENDS

UR - http://www.scopus.com/inward/record.url?scp=85086523185&partnerID=8YFLogxK

U2 - 10.1021/acs.est.0c01848

DO - 10.1021/acs.est.0c01848

M3 - Journal article

C2 - 32410455

AN - SCOPUS:85086523185

VL - 54

SP - 7388

EP - 7397

JO - Environmental Science & Technology (Washington)

JF - Environmental Science & Technology (Washington)

SN - 0013-936X

IS - 12

ER -