Concentration of mercury and other metals in an Arctic planktonic food web under a climate warming scenario

Delove Abraham Asiedu  Abraham Asiedu; Jens Søndergaard; Sigrun  Jonasdottir; Thomas  Juul-Pedersen; Marja Koski

doi:10.1016/j.marpolbul.2023.115436

Concentration of mercury and other metals in an Arctic planktonic food web under a climate warming scenario

Delove Abraham Asiedu Abraham Asiedu^*, Jens Søndergaard, Sigrun Jonasdottir, Thomas Juul-Pedersen, Marja Koski

^*Corresponding author af dette arbejde

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

1 Citationer (Scopus)

Abstract

Arctic marine ecosystems act as a global sink of mercury (Hg) and other metals, and high concentrations of these have been measured in higher trophic-level organisms. Nevertheless, the concentrations of metals at the basis of the marine food web in the Arctic is less known despite the likelihood of biomagnification from dietary sources. We investigated the concentrations of mercury (Hg) and other metals in different size fractions of plankton in West Greenland. All size fractions contained detectable levels of Hg (ranging from 4.8 to 241.3 ng g dw ⁻¹) at all stations, although with high geographic variability, likely reflecting the sources of mercury (e.g., meltwater). In many cases, the concentrations in the larger-size fractions were lower than in the smaller-size fractions, suggesting depuration through the metabolic activity of mesozooplankton. Concentrations of Cd, Pb, V, Ni, and Cr were higher than previously reported elsewhere in the Arctic.

Originalsprog	Engelsk
Artikelnummer	115436
Tidsskrift	Marine Pollution Bulletin
Vol/bind	194
Nummer	Part B
Antal sider	14
ISSN	0025-326X
DOI	https://doi.org/10.1016/j.marpolbul.2023.115436
Status	Udgivet - sep. 2023

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10.1016/j.marpolbul.2023.115436Licens: CC BY

https://zenodo.org/records/8364144/files/Asiedu et al_2023 Concentration of mercury and other metals in an Arctic planktonic food web under climate warming scenario.pdf?download=1Licens: CC BY

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title = "Concentration of mercury and other metals in an Arctic planktonic food web under a climate warming scenario",

abstract = "Arctic marine ecosystems act as a global sink of mercury (Hg) and other metals, and high concentrations of these have been measured in higher trophic-level organisms. Nevertheless, the concentrations of metals at the basis of the marine food web in the Arctic is less known despite the likelihood of biomagnification from dietary sources. We investigated the concentrations of mercury (Hg) and other metals in different size fractions of plankton in West Greenland. All size fractions contained detectable levels of Hg (ranging from 4.8 to 241.3 ng g dw −1) at all stations, although with high geographic variability, likely reflecting the sources of mercury (e.g., meltwater). In many cases, the concentrations in the larger-size fractions were lower than in the smaller-size fractions, suggesting depuration through the metabolic activity of mesozooplankton. Concentrations of Cd, Pb, V, Ni, and Cr were higher than previously reported elsewhere in the Arctic.",

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Concentration of mercury and other metals in an Arctic planktonic food web under a climate warming scenario. / Abraham Asiedu, Delove Abraham Asiedu; Søndergaard, Jens; Jonasdottir, Sigrun et al.
I: Marine Pollution Bulletin, Bind 194, Nr. Part B, 115436, 09.2023.

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

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AU - Abraham Asiedu, Delove Abraham Asiedu

AU - Søndergaard, Jens

AU - Jonasdottir, Sigrun

AU - Juul-Pedersen, Thomas

AU - Koski, Marja

PY - 2023/9

Y1 - 2023/9

N2 - Arctic marine ecosystems act as a global sink of mercury (Hg) and other metals, and high concentrations of these have been measured in higher trophic-level organisms. Nevertheless, the concentrations of metals at the basis of the marine food web in the Arctic is less known despite the likelihood of biomagnification from dietary sources. We investigated the concentrations of mercury (Hg) and other metals in different size fractions of plankton in West Greenland. All size fractions contained detectable levels of Hg (ranging from 4.8 to 241.3 ng g dw −1) at all stations, although with high geographic variability, likely reflecting the sources of mercury (e.g., meltwater). In many cases, the concentrations in the larger-size fractions were lower than in the smaller-size fractions, suggesting depuration through the metabolic activity of mesozooplankton. Concentrations of Cd, Pb, V, Ni, and Cr were higher than previously reported elsewhere in the Arctic.

AB - Arctic marine ecosystems act as a global sink of mercury (Hg) and other metals, and high concentrations of these have been measured in higher trophic-level organisms. Nevertheless, the concentrations of metals at the basis of the marine food web in the Arctic is less known despite the likelihood of biomagnification from dietary sources. We investigated the concentrations of mercury (Hg) and other metals in different size fractions of plankton in West Greenland. All size fractions contained detectable levels of Hg (ranging from 4.8 to 241.3 ng g dw −1) at all stations, although with high geographic variability, likely reflecting the sources of mercury (e.g., meltwater). In many cases, the concentrations in the larger-size fractions were lower than in the smaller-size fractions, suggesting depuration through the metabolic activity of mesozooplankton. Concentrations of Cd, Pb, V, Ni, and Cr were higher than previously reported elsewhere in the Arctic.

KW - Arctic

KW - Biomagnification

KW - Heavy metals

KW - Hg

KW - Plankton

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U2 - 10.1016/j.marpolbul.2023.115436

DO - 10.1016/j.marpolbul.2023.115436

M3 - Journal article

C2 - 37660452

SN - 0025-326X

VL - 194

JO - Marine Pollution Bulletin

JF - Marine Pollution Bulletin

IS - Part B

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Concentration of mercury and other metals in an Arctic planktonic food web under a climate warming scenario

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