Nitrogen and sulfur isotopes predict variation in mercury levels in Arctic seabird prey
Mercury (Hg) biotransformation and biomagnification are processes that affect Hg burdens in wildlife. To interpret variation in Hg in seabird eggs, used as Hg bioindicators in the Arctic, it is important to understand how Hg biomagnifies through the food web. We evaluated the use of δ34S, along with...
Published in: | Marine Pollution Bulletin |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://ir.library.carleton.ca/pub/20519 https://doi.org/10.1016/j.marpolbul.2018.07.075 |
id |
ftcarletonunivir:oai:carleton.ca:20519 |
---|---|
record_format |
openpolar |
spelling |
ftcarletonunivir:oai:carleton.ca:20519 2023-05-15T14:36:00+02:00 Nitrogen and sulfur isotopes predict variation in mercury levels in Arctic seabird prey Góngora, E. (Esteban) Braune, B.M. (Birgit M.) Elliott, K.H. (Kyle H.) 2018-10-01 https://ir.library.carleton.ca/pub/20519 https://doi.org/10.1016/j.marpolbul.2018.07.075 en eng https://ir.library.carleton.ca/pub/20519 doi:10.1016/j.marpolbul.2018.07.075 Marine Pollution Bulletin vol. 135, pp. 907-914 Bioaccumulation Marine food web Mercury Methylation Stable isotope ratios info:eu-repo/semantics/article 2018 ftcarletonunivir https://doi.org/10.1016/j.marpolbul.2018.07.075 2022-02-06T21:51:50Z Mercury (Hg) biotransformation and biomagnification are processes that affect Hg burdens in wildlife. To interpret variation in Hg in seabird eggs, used as Hg bioindicators in the Arctic, it is important to understand how Hg biomagnifies through the food web. We evaluated the use of δ34S, along with other commonly used stable isotope signatures (δ15N and δ13C), for the determination of possible sources of Hg in an Arctic food web (56 individuals of 15 species of fish and invertebrates). Hg correlated with δ34S (R2 = 0.72). When the combined effects of δ34S and δ15N were considered in mixed-effects models, both δ34S and δ15N together described Hg patterns in Arctic food webs better than either isotope alone. Our results demonstrate the usefulness of δ34S to account for variation in Hg among marine animals and to study the possible underlying effects that MeHg production may have on Hg pathways in Arctic ecosystems. Article in Journal/Newspaper Arctic Carleton University's Institutional Repository Arctic Marine Pollution Bulletin 135 907 914 |
institution |
Open Polar |
collection |
Carleton University's Institutional Repository |
op_collection_id |
ftcarletonunivir |
language |
English |
topic |
Bioaccumulation Marine food web Mercury Methylation Stable isotope ratios |
spellingShingle |
Bioaccumulation Marine food web Mercury Methylation Stable isotope ratios Góngora, E. (Esteban) Braune, B.M. (Birgit M.) Elliott, K.H. (Kyle H.) Nitrogen and sulfur isotopes predict variation in mercury levels in Arctic seabird prey |
topic_facet |
Bioaccumulation Marine food web Mercury Methylation Stable isotope ratios |
description |
Mercury (Hg) biotransformation and biomagnification are processes that affect Hg burdens in wildlife. To interpret variation in Hg in seabird eggs, used as Hg bioindicators in the Arctic, it is important to understand how Hg biomagnifies through the food web. We evaluated the use of δ34S, along with other commonly used stable isotope signatures (δ15N and δ13C), for the determination of possible sources of Hg in an Arctic food web (56 individuals of 15 species of fish and invertebrates). Hg correlated with δ34S (R2 = 0.72). When the combined effects of δ34S and δ15N were considered in mixed-effects models, both δ34S and δ15N together described Hg patterns in Arctic food webs better than either isotope alone. Our results demonstrate the usefulness of δ34S to account for variation in Hg among marine animals and to study the possible underlying effects that MeHg production may have on Hg pathways in Arctic ecosystems. |
format |
Article in Journal/Newspaper |
author |
Góngora, E. (Esteban) Braune, B.M. (Birgit M.) Elliott, K.H. (Kyle H.) |
author_facet |
Góngora, E. (Esteban) Braune, B.M. (Birgit M.) Elliott, K.H. (Kyle H.) |
author_sort |
Góngora, E. (Esteban) |
title |
Nitrogen and sulfur isotopes predict variation in mercury levels in Arctic seabird prey |
title_short |
Nitrogen and sulfur isotopes predict variation in mercury levels in Arctic seabird prey |
title_full |
Nitrogen and sulfur isotopes predict variation in mercury levels in Arctic seabird prey |
title_fullStr |
Nitrogen and sulfur isotopes predict variation in mercury levels in Arctic seabird prey |
title_full_unstemmed |
Nitrogen and sulfur isotopes predict variation in mercury levels in Arctic seabird prey |
title_sort |
nitrogen and sulfur isotopes predict variation in mercury levels in arctic seabird prey |
publishDate |
2018 |
url |
https://ir.library.carleton.ca/pub/20519 https://doi.org/10.1016/j.marpolbul.2018.07.075 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Marine Pollution Bulletin vol. 135, pp. 907-914 |
op_relation |
https://ir.library.carleton.ca/pub/20519 doi:10.1016/j.marpolbul.2018.07.075 |
op_doi |
https://doi.org/10.1016/j.marpolbul.2018.07.075 |
container_title |
Marine Pollution Bulletin |
container_volume |
135 |
container_start_page |
907 |
op_container_end_page |
914 |
_version_ |
1766308714061496320 |