Study of the spatial and temporal trends of mercury in the Arctic : use of teeth and hair of the top predators as biomonitoring tissues

The spatial and temporal trends of mercury in the Arctic have been studied through the analysis of this metal in hard tissues, i.e. teeth and hair, in ringed seals (Phoca hispida) and polar bears (Ursus maritimus). Sex had no influence on the mercury concentrations while age was a significant factor...

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Main Author: Aubail, Aurore
Other Authors: LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS), Université de La Rochelle, Vincent Ridoux
Format: Doctoral or Postdoctoral Thesis
Language:French
Published: HAL CCSD 2010
Subjects:
Online Access:https://tel.archives-ouvertes.fr/tel-00583122
https://tel.archives-ouvertes.fr/tel-00583122/document
https://tel.archives-ouvertes.fr/tel-00583122/file/THESE15jan2010.pdf
id ftccsdartic:oai:HAL:tel-00583122v1
record_format openpolar
spelling ftccsdartic:oai:HAL:tel-00583122v1 2023-05-15T14:41:18+02:00 Study of the spatial and temporal trends of mercury in the Arctic : use of teeth and hair of the top predators as biomonitoring tissues Étude des variations spatiales et temporelles du mercure en Arctique : utilisation des dents et des poils des prédateurs supérieurs comme tissus de biomonitoring Aubail, Aurore LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) Université de La Rochelle Vincent Ridoux 2010-12-08 https://tel.archives-ouvertes.fr/tel-00583122 https://tel.archives-ouvertes.fr/tel-00583122/document https://tel.archives-ouvertes.fr/tel-00583122/file/THESE15jan2010.pdf fr fre HAL CCSD NNT: 2010LAROS316 tel-00583122 https://tel.archives-ouvertes.fr/tel-00583122 https://tel.archives-ouvertes.fr/tel-00583122/document https://tel.archives-ouvertes.fr/tel-00583122/file/THESE15jan2010.pdf info:eu-repo/semantics/OpenAccess https://tel.archives-ouvertes.fr/tel-00583122 Sciences agricoles. Université de La Rochelle, 2010. Français. ⟨NNT : 2010LAROS316⟩ Mercury Stable isotopes of nitrogen and carbon Spatial and temporal trends Hard tissues Top-predators Climate change Arctic Mercure Isotopes stables d’azote et de carbone Tendances spatiales et temporelles Tissus durs Prédateurs supérieurs Réchauffement climatique Arctique [SDV.SA]Life Sciences [q-bio]/Agricultural sciences info:eu-repo/semantics/doctoralThesis Theses 2010 ftccsdartic 2021-10-24T17:54:48Z The spatial and temporal trends of mercury in the Arctic have been studied through the analysis of this metal in hard tissues, i.e. teeth and hair, in ringed seals (Phoca hispida) and polar bears (Ursus maritimus). Sex had no influence on the mercury concentrations while age was a significant factor.Two distinct spatial trends were observed in the tissues of these two species: a first gradient of augmentation from the East to the West of the Arctic, i.e. from Svalbard towards Greenland and the Canadian Arctic, and a second one, from the South to the North of the Canadian Arctic, resulting probably from a combination of the global mineralogy in the Arctic with biotic and abiotic factors.An increasing trend in mercury concentrations has been detected globally between the preindustrial period and the end of the 20th century. However, the temporal trends detected in the second part of the 20th century revealed an increase in the West Arctic while a decrease was observed in the East Arctic. This difference seems to be due to a distinct input of the atmospheric air masses to the two regions. Besides, a climatic variability could contribute to the variations observed these last decennials by influencing the habitat and the feeding habits of the marine predators. Thus, the determination of the stable isotopes seems to be essential to combine to the study of the mercury trends.Finally, this study has showed the importance of hair as a non-invasive and relevant biomonitoring tissue on a regular or annual sampling base, while the use of the teeth seems to be more adequate for reconstructing long-term trends of mercury. Les tendances spatiales et temporelles du mercure en Arctique ont été étudiées au travers de l’analyse de ce métal dans les tissus durs, i.e. dents et poils, des phoques annelés (Phoca hispida) et des ours polaires (Ursus maritimus). Aucune influence du sexe sur les concentrations n’a été détectée dans les tissus de ces deux espèces alors que l’âge est apparu comme un facteur d’influence important.Deux ... Doctoral or Postdoctoral Thesis Arctic Arctique* Climate change Greenland Phoca hispida Svalbard Ursus maritimus Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Svalbard Greenland Phoques ENVELOPE(141.396,141.396,-66.814,-66.814)
institution Open Polar
collection Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
op_collection_id ftccsdartic
language French
topic Mercury
Stable isotopes of nitrogen and carbon
Spatial and temporal trends
Hard tissues
Top-predators
Climate change
Arctic
Mercure
Isotopes stables d’azote et de carbone
Tendances spatiales et temporelles
Tissus durs
Prédateurs supérieurs
Réchauffement climatique
Arctique
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
spellingShingle Mercury
Stable isotopes of nitrogen and carbon
Spatial and temporal trends
Hard tissues
Top-predators
Climate change
Arctic
Mercure
Isotopes stables d’azote et de carbone
Tendances spatiales et temporelles
Tissus durs
Prédateurs supérieurs
Réchauffement climatique
Arctique
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Aubail, Aurore
Study of the spatial and temporal trends of mercury in the Arctic : use of teeth and hair of the top predators as biomonitoring tissues
topic_facet Mercury
Stable isotopes of nitrogen and carbon
Spatial and temporal trends
Hard tissues
Top-predators
Climate change
Arctic
Mercure
Isotopes stables d’azote et de carbone
Tendances spatiales et temporelles
Tissus durs
Prédateurs supérieurs
Réchauffement climatique
Arctique
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
description The spatial and temporal trends of mercury in the Arctic have been studied through the analysis of this metal in hard tissues, i.e. teeth and hair, in ringed seals (Phoca hispida) and polar bears (Ursus maritimus). Sex had no influence on the mercury concentrations while age was a significant factor.Two distinct spatial trends were observed in the tissues of these two species: a first gradient of augmentation from the East to the West of the Arctic, i.e. from Svalbard towards Greenland and the Canadian Arctic, and a second one, from the South to the North of the Canadian Arctic, resulting probably from a combination of the global mineralogy in the Arctic with biotic and abiotic factors.An increasing trend in mercury concentrations has been detected globally between the preindustrial period and the end of the 20th century. However, the temporal trends detected in the second part of the 20th century revealed an increase in the West Arctic while a decrease was observed in the East Arctic. This difference seems to be due to a distinct input of the atmospheric air masses to the two regions. Besides, a climatic variability could contribute to the variations observed these last decennials by influencing the habitat and the feeding habits of the marine predators. Thus, the determination of the stable isotopes seems to be essential to combine to the study of the mercury trends.Finally, this study has showed the importance of hair as a non-invasive and relevant biomonitoring tissue on a regular or annual sampling base, while the use of the teeth seems to be more adequate for reconstructing long-term trends of mercury. Les tendances spatiales et temporelles du mercure en Arctique ont été étudiées au travers de l’analyse de ce métal dans les tissus durs, i.e. dents et poils, des phoques annelés (Phoca hispida) et des ours polaires (Ursus maritimus). Aucune influence du sexe sur les concentrations n’a été détectée dans les tissus de ces deux espèces alors que l’âge est apparu comme un facteur d’influence important.Deux ...
author2 LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs)
Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)
Université de La Rochelle
Vincent Ridoux
format Doctoral or Postdoctoral Thesis
author Aubail, Aurore
author_facet Aubail, Aurore
author_sort Aubail, Aurore
title Study of the spatial and temporal trends of mercury in the Arctic : use of teeth and hair of the top predators as biomonitoring tissues
title_short Study of the spatial and temporal trends of mercury in the Arctic : use of teeth and hair of the top predators as biomonitoring tissues
title_full Study of the spatial and temporal trends of mercury in the Arctic : use of teeth and hair of the top predators as biomonitoring tissues
title_fullStr Study of the spatial and temporal trends of mercury in the Arctic : use of teeth and hair of the top predators as biomonitoring tissues
title_full_unstemmed Study of the spatial and temporal trends of mercury in the Arctic : use of teeth and hair of the top predators as biomonitoring tissues
title_sort study of the spatial and temporal trends of mercury in the arctic : use of teeth and hair of the top predators as biomonitoring tissues
publisher HAL CCSD
publishDate 2010
url https://tel.archives-ouvertes.fr/tel-00583122
https://tel.archives-ouvertes.fr/tel-00583122/document
https://tel.archives-ouvertes.fr/tel-00583122/file/THESE15jan2010.pdf
long_lat ENVELOPE(141.396,141.396,-66.814,-66.814)
geographic Arctic
Svalbard
Greenland
Phoques
geographic_facet Arctic
Svalbard
Greenland
Phoques
genre Arctic
Arctique*
Climate change
Greenland
Phoca hispida
Svalbard
Ursus maritimus
genre_facet Arctic
Arctique*
Climate change
Greenland
Phoca hispida
Svalbard
Ursus maritimus
op_source https://tel.archives-ouvertes.fr/tel-00583122
Sciences agricoles. Université de La Rochelle, 2010. Français. ⟨NNT : 2010LAROS316⟩
op_relation NNT: 2010LAROS316
tel-00583122
https://tel.archives-ouvertes.fr/tel-00583122
https://tel.archives-ouvertes.fr/tel-00583122/document
https://tel.archives-ouvertes.fr/tel-00583122/file/THESE15jan2010.pdf
op_rights info:eu-repo/semantics/OpenAccess
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