Penguins as bioindicators of mercury contamination in the southern Indian Ocean: geographical and temporal trends
International audience Penguins have been recently identified as useful bioindicators of mercury (Hg) transfer to food webs in the Southern Ocean over different spatial and temporal scales. Here, feather Hg concentrations were measured in adults and chicks of all the seven penguin species breeding i...
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Online Access: | https://hal.science/hal-01330644 https://hal.science/hal-01330644/document https://hal.science/hal-01330644/file/Carravieri%20et%20al.%202016%20ENPO.pdf https://doi.org/10.1016/j.envpol.2016.02.010 |
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ftunivrochelle:oai:HAL:hal-01330644v1 2024-02-11T09:58:33+01:00 Penguins as bioindicators of mercury contamination in the southern Indian Ocean: geographical and temporal trends Carravieri, Alice Cherel, Yves Jaeger, Audrey Churlaud, Carine Bustamante, Paco LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Ecologie marine tropicale dans les Océans Pacifique et Indien (ENTROPIE Réunion ) Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) 2016 https://hal.science/hal-01330644 https://hal.science/hal-01330644/document https://hal.science/hal-01330644/file/Carravieri%20et%20al.%202016%20ENPO.pdf https://doi.org/10.1016/j.envpol.2016.02.010 en eng HAL CCSD Elsevier Science info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envpol.2016.02.010 hal-01330644 https://hal.science/hal-01330644 https://hal.science/hal-01330644/document https://hal.science/hal-01330644/file/Carravieri%20et%20al.%202016%20ENPO.pdf doi:10.1016/j.envpol.2016.02.010 info:eu-repo/semantics/OpenAccess ISSN: 0013-9327 Environmental Pollution (1970) https://hal.science/hal-01330644 Environmental Pollution (1970), 2016, 213 (195-205), ⟨10.1016/j.envpol.2016.02.010⟩ Antarctica Indian Ocean Metal Museum specimen Seabird Stable isotopes [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology info:eu-repo/semantics/article Journal articles 2016 ftunivrochelle https://doi.org/10.1016/j.envpol.2016.02.010 2024-01-23T23:35:44Z International audience Penguins have been recently identified as useful bioindicators of mercury (Hg) transfer to food webs in the Southern Ocean over different spatial and temporal scales. Here, feather Hg concentrations were measured in adults and chicks of all the seven penguin species breeding in the southern Indian Ocean, over a large latitudinal gradient spanning Antarctic, subantarctic and subtropical sites. Hg was also measured in feathers of museum specimens of penguins collected at the same sites in the 1950s and 1970s. Our aim was to evaluate geographical and historical variation in Hg transfer to penguins, while accounting for feeding habits by using the stable isotope technique (δ13C, habitat; δ15N, diet/trophic level). Adult feather Hg concentrations in contemporary individuals ranged from 0.7 ± 0.2 to 5.9 ± 1.9 µg g-1 dw in Adélie and gentoo penguins, respectively. Inter-specific differences in Hg accumulation were strong among both adults and chicks, and mainly linked to feeding habits. Overall, penguin species that feed in Antarctic waters had lower feather Hg concentrations than those that feed in subantarctic and subtropical waters, irrespective of age class and dietary group, suggesting different Hg incorporation into food webs depending on the water mass. While accounting for feeding habits, we detected different temporal variations in feather Hg concentrations depending on species. Notably, the subantarctic gentoo and macaroni penguins had higher Hg burdens in the contemporary rather than in the historical sample, despite similar or lower trophic levels, respectively. Whereas increases in Hg deposition have been recently documented in the Southern Hemisphere, future monitoring is highly needed to confirm or not this temporal trend in penguins, especially in the context of actual changing Hg emission patterns and global warming. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean HAL - Université de La Rochelle Antarctic Southern Ocean Indian Environmental Pollution 213 195 205 |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
Antarctica Indian Ocean Metal Museum specimen Seabird Stable isotopes [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
spellingShingle |
Antarctica Indian Ocean Metal Museum specimen Seabird Stable isotopes [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology Carravieri, Alice Cherel, Yves Jaeger, Audrey Churlaud, Carine Bustamante, Paco Penguins as bioindicators of mercury contamination in the southern Indian Ocean: geographical and temporal trends |
topic_facet |
Antarctica Indian Ocean Metal Museum specimen Seabird Stable isotopes [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology |
description |
International audience Penguins have been recently identified as useful bioindicators of mercury (Hg) transfer to food webs in the Southern Ocean over different spatial and temporal scales. Here, feather Hg concentrations were measured in adults and chicks of all the seven penguin species breeding in the southern Indian Ocean, over a large latitudinal gradient spanning Antarctic, subantarctic and subtropical sites. Hg was also measured in feathers of museum specimens of penguins collected at the same sites in the 1950s and 1970s. Our aim was to evaluate geographical and historical variation in Hg transfer to penguins, while accounting for feeding habits by using the stable isotope technique (δ13C, habitat; δ15N, diet/trophic level). Adult feather Hg concentrations in contemporary individuals ranged from 0.7 ± 0.2 to 5.9 ± 1.9 µg g-1 dw in Adélie and gentoo penguins, respectively. Inter-specific differences in Hg accumulation were strong among both adults and chicks, and mainly linked to feeding habits. Overall, penguin species that feed in Antarctic waters had lower feather Hg concentrations than those that feed in subantarctic and subtropical waters, irrespective of age class and dietary group, suggesting different Hg incorporation into food webs depending on the water mass. While accounting for feeding habits, we detected different temporal variations in feather Hg concentrations depending on species. Notably, the subantarctic gentoo and macaroni penguins had higher Hg burdens in the contemporary rather than in the historical sample, despite similar or lower trophic levels, respectively. Whereas increases in Hg deposition have been recently documented in the Southern Hemisphere, future monitoring is highly needed to confirm or not this temporal trend in penguins, especially in the context of actual changing Hg emission patterns and global warming. |
author2 |
LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Ecologie marine tropicale dans les Océans Pacifique et Indien (ENTROPIE Réunion ) Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Carravieri, Alice Cherel, Yves Jaeger, Audrey Churlaud, Carine Bustamante, Paco |
author_facet |
Carravieri, Alice Cherel, Yves Jaeger, Audrey Churlaud, Carine Bustamante, Paco |
author_sort |
Carravieri, Alice |
title |
Penguins as bioindicators of mercury contamination in the southern Indian Ocean: geographical and temporal trends |
title_short |
Penguins as bioindicators of mercury contamination in the southern Indian Ocean: geographical and temporal trends |
title_full |
Penguins as bioindicators of mercury contamination in the southern Indian Ocean: geographical and temporal trends |
title_fullStr |
Penguins as bioindicators of mercury contamination in the southern Indian Ocean: geographical and temporal trends |
title_full_unstemmed |
Penguins as bioindicators of mercury contamination in the southern Indian Ocean: geographical and temporal trends |
title_sort |
penguins as bioindicators of mercury contamination in the southern indian ocean: geographical and temporal trends |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/hal-01330644 https://hal.science/hal-01330644/document https://hal.science/hal-01330644/file/Carravieri%20et%20al.%202016%20ENPO.pdf https://doi.org/10.1016/j.envpol.2016.02.010 |
geographic |
Antarctic Southern Ocean Indian |
geographic_facet |
Antarctic Southern Ocean Indian |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_source |
ISSN: 0013-9327 Environmental Pollution (1970) https://hal.science/hal-01330644 Environmental Pollution (1970), 2016, 213 (195-205), ⟨10.1016/j.envpol.2016.02.010⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envpol.2016.02.010 hal-01330644 https://hal.science/hal-01330644 https://hal.science/hal-01330644/document https://hal.science/hal-01330644/file/Carravieri%20et%20al.%202016%20ENPO.pdf doi:10.1016/j.envpol.2016.02.010 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.envpol.2016.02.010 |
container_title |
Environmental Pollution |
container_volume |
213 |
container_start_page |
195 |
op_container_end_page |
205 |
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1790594230318530560 |