SEABIRDS AS BIOINDICATORS OF SOUTHERN OCEAN ECOSYSTEMS: CONCENTRATIONS OF INORGANIC AND ORGANIC CONTAMINANTS, ECOLOGICAL EXPLANATION AND CRITICAL EVALUATION
Antarctic and subantarctic marine environments are reached by inorganic and organic contaminantsthrough ocean circulation and atmospheric transport. Yet, environmental contamination is poorlyknown in the Southern Ocean, in particular in the Indian sector. Among environmental contaminants,mercury (Hg...
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2014
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Online Access: | https://theses.hal.science/tel-01104730 https://theses.hal.science/tel-01104730/document https://theses.hal.science/tel-01104730/file/Carravieri_Alice.pdf |
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ftunivrochelle:oai:HAL:tel-01104730v1 2024-02-11T09:58:16+01:00 SEABIRDS AS BIOINDICATORS OF SOUTHERN OCEAN ECOSYSTEMS: CONCENTRATIONS OF INORGANIC AND ORGANIC CONTAMINANTS, ECOLOGICAL EXPLANATION AND CRITICAL EVALUATION Les oiseaux marins bioindicateurs des écosystèmes austraux : Niveaux de contaminants métalliques et organiques, explication écologique et évaluation critique Carravieri, Alice 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) Université de La Rochelle Paco Bustamante Yves Cherel 2014-10-20 https://theses.hal.science/tel-01104730 https://theses.hal.science/tel-01104730/document https://theses.hal.science/tel-01104730/file/Carravieri_Alice.pdf en eng HAL CCSD tel-01104730 https://theses.hal.science/tel-01104730 https://theses.hal.science/tel-01104730/document https://theses.hal.science/tel-01104730/file/Carravieri_Alice.pdf info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-01104730 Environmental Sciences. Université de La Rochelle, 2014. English. ⟨NNT : ⟩ trace elements stable isotopes persistent organic pollutants penguins mercury albatrosses feathers feeding habits polluants organiques persistants manchots mercure plumes albatros pétrels éléments trace métalliques écologie alimentaire isotopes stables [SDE]Environmental Sciences info:eu-repo/semantics/doctoralThesis Theses 2014 ftunivrochelle 2024-01-23T23:35:55Z Antarctic and subantarctic marine environments are reached by inorganic and organic contaminantsthrough ocean circulation and atmospheric transport. Yet, environmental contamination is poorlyknown in the Southern Ocean, in particular in the Indian sector. Among environmental contaminants,mercury (Hg) and persistent organic pollutants (POPs) are primarily of concern, because they aretoxic, highly mobile, and they bioaccumulate in the tissues of living organisms and biomagnify up thefood web. Seabirds, as upper predators, are exposed to large quantities of contaminants via foodintake and have widely served as biomonitors of marine contamination, notably through the nondestructivesampling of their feathers and blood. My doctoral work has focussed on the abundant anddiverse seabird species (more than 40) breeding in the French Southern and Antarctic Lands,southern Indian Ocean, in order to describe and explain contaminant concentrations over a largelatitudinal gradient, from Antarctica to the subtropics, and to identify the best bioindicator speciesfor contaminant biomonitoring. In a first methodological step, seabirds with synchronous moult ofbody feathers (adult penguins and chicks of all species) were recognised as good candidates asbioindicators, because, unlike most adult birds, they present low within-individual variation in feathercontaminant concentrations. In a second explanatory step, the influence of intrinsic (individual traits)and extrinsic factors (feeding ecology inferred from the stable isotope method) driving variation incontaminant concentrations was evaluated in feathers of the large avian community of the KerguelenIslands (27 species) and in blood of wandering albatrosses from the Crozet Islands (180 birds ofknown individual traits). Feeding ecology was the main factor driving variation in contaminantconcentrations of blood and feathers, both at the community, population and individual levels, whereasage, sex, phylogeny and breeding status played a minor role. Age-class was however an ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctica Crozet Islands Southern Ocean HAL - Université de La Rochelle Antarctic Southern Ocean Indian Manchots ENVELOPE(141.397,141.397,-66.811,-66.811) Pétrels ENVELOPE(140.017,140.017,-66.667,-66.667) |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
trace elements stable isotopes persistent organic pollutants penguins mercury albatrosses feathers feeding habits polluants organiques persistants manchots mercure plumes albatros pétrels éléments trace métalliques écologie alimentaire isotopes stables [SDE]Environmental Sciences |
spellingShingle |
trace elements stable isotopes persistent organic pollutants penguins mercury albatrosses feathers feeding habits polluants organiques persistants manchots mercure plumes albatros pétrels éléments trace métalliques écologie alimentaire isotopes stables [SDE]Environmental Sciences Carravieri, Alice SEABIRDS AS BIOINDICATORS OF SOUTHERN OCEAN ECOSYSTEMS: CONCENTRATIONS OF INORGANIC AND ORGANIC CONTAMINANTS, ECOLOGICAL EXPLANATION AND CRITICAL EVALUATION |
topic_facet |
trace elements stable isotopes persistent organic pollutants penguins mercury albatrosses feathers feeding habits polluants organiques persistants manchots mercure plumes albatros pétrels éléments trace métalliques écologie alimentaire isotopes stables [SDE]Environmental Sciences |
description |
Antarctic and subantarctic marine environments are reached by inorganic and organic contaminantsthrough ocean circulation and atmospheric transport. Yet, environmental contamination is poorlyknown in the Southern Ocean, in particular in the Indian sector. Among environmental contaminants,mercury (Hg) and persistent organic pollutants (POPs) are primarily of concern, because they aretoxic, highly mobile, and they bioaccumulate in the tissues of living organisms and biomagnify up thefood web. Seabirds, as upper predators, are exposed to large quantities of contaminants via foodintake and have widely served as biomonitors of marine contamination, notably through the nondestructivesampling of their feathers and blood. My doctoral work has focussed on the abundant anddiverse seabird species (more than 40) breeding in the French Southern and Antarctic Lands,southern Indian Ocean, in order to describe and explain contaminant concentrations over a largelatitudinal gradient, from Antarctica to the subtropics, and to identify the best bioindicator speciesfor contaminant biomonitoring. In a first methodological step, seabirds with synchronous moult ofbody feathers (adult penguins and chicks of all species) were recognised as good candidates asbioindicators, because, unlike most adult birds, they present low within-individual variation in feathercontaminant concentrations. In a second explanatory step, the influence of intrinsic (individual traits)and extrinsic factors (feeding ecology inferred from the stable isotope method) driving variation incontaminant concentrations was evaluated in feathers of the large avian community of the KerguelenIslands (27 species) and in blood of wandering albatrosses from the Crozet Islands (180 birds ofknown individual traits). Feeding ecology was the main factor driving variation in contaminantconcentrations of blood and feathers, both at the community, population and individual levels, whereasage, sex, phylogeny and breeding status played a minor role. Age-class was however an ... |
author2 |
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) Université de La Rochelle Paco Bustamante Yves Cherel |
format |
Doctoral or Postdoctoral Thesis |
author |
Carravieri, Alice |
author_facet |
Carravieri, Alice |
author_sort |
Carravieri, Alice |
title |
SEABIRDS AS BIOINDICATORS OF SOUTHERN OCEAN ECOSYSTEMS: CONCENTRATIONS OF INORGANIC AND ORGANIC CONTAMINANTS, ECOLOGICAL EXPLANATION AND CRITICAL EVALUATION |
title_short |
SEABIRDS AS BIOINDICATORS OF SOUTHERN OCEAN ECOSYSTEMS: CONCENTRATIONS OF INORGANIC AND ORGANIC CONTAMINANTS, ECOLOGICAL EXPLANATION AND CRITICAL EVALUATION |
title_full |
SEABIRDS AS BIOINDICATORS OF SOUTHERN OCEAN ECOSYSTEMS: CONCENTRATIONS OF INORGANIC AND ORGANIC CONTAMINANTS, ECOLOGICAL EXPLANATION AND CRITICAL EVALUATION |
title_fullStr |
SEABIRDS AS BIOINDICATORS OF SOUTHERN OCEAN ECOSYSTEMS: CONCENTRATIONS OF INORGANIC AND ORGANIC CONTAMINANTS, ECOLOGICAL EXPLANATION AND CRITICAL EVALUATION |
title_full_unstemmed |
SEABIRDS AS BIOINDICATORS OF SOUTHERN OCEAN ECOSYSTEMS: CONCENTRATIONS OF INORGANIC AND ORGANIC CONTAMINANTS, ECOLOGICAL EXPLANATION AND CRITICAL EVALUATION |
title_sort |
seabirds as bioindicators of southern ocean ecosystems: concentrations of inorganic and organic contaminants, ecological explanation and critical evaluation |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://theses.hal.science/tel-01104730 https://theses.hal.science/tel-01104730/document https://theses.hal.science/tel-01104730/file/Carravieri_Alice.pdf |
long_lat |
ENVELOPE(141.397,141.397,-66.811,-66.811) ENVELOPE(140.017,140.017,-66.667,-66.667) |
geographic |
Antarctic Southern Ocean Indian Manchots Pétrels |
geographic_facet |
Antarctic Southern Ocean Indian Manchots Pétrels |
genre |
Antarc* Antarctic Antarctica Crozet Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Crozet Islands Southern Ocean |
op_source |
https://theses.hal.science/tel-01104730 Environmental Sciences. Université de La Rochelle, 2014. English. ⟨NNT : ⟩ |
op_relation |
tel-01104730 https://theses.hal.science/tel-01104730 https://theses.hal.science/tel-01104730/document https://theses.hal.science/tel-01104730/file/Carravieri_Alice.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1790593886404476928 |