Mercury stable isotopes in seabirds in the Ebro Delta (NE Iberian Peninsula): Inter-specific and temporal differences
International audience Mercury (Hg) is a global pollutant, which particularly affects aquatic ecosystems, both marine and freshwater. Top-predators depending on these environments, such as seabirds, are regarded as suitable bioindicators of Hg pollution. In the Ebro Delta (NE Iberian Peninsula), leg...
Published in: | Environmental Pollution |
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ftunivpau:oai:HAL:hal-04537081v1 2024-09-15T18:02:46+00:00 Mercury stable isotopes in seabirds in the Ebro Delta (NE Iberian Peninsula): Inter-specific and temporal differences Sánchez-Fortún, Moisès Amouroux, David Tessier, Emmanuel Carrasco, Josep Lluís Sanpera, Carola University of Barcelona Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM) Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) 2024-04 https://univ-pau.hal.science/hal-04537081 https://univ-pau.hal.science/hal-04537081/document https://univ-pau.hal.science/hal-04537081/file/1-s2.0-S0269749124004536-main.pdf https://doi.org/10.1016/j.envpol.2024.123739 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envpol.2024.123739 hal-04537081 https://univ-pau.hal.science/hal-04537081 https://univ-pau.hal.science/hal-04537081/document https://univ-pau.hal.science/hal-04537081/file/1-s2.0-S0269749124004536-main.pdf doi:10.1016/j.envpol.2024.123739 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0269-7491 EISSN: 1873-6424 Environmental Pollution https://univ-pau.hal.science/hal-04537081 Environmental Pollution, 2024, 347, pp.123739. ⟨10.1016/j.envpol.2024.123739⟩ Anthropogenic mercury Audouin's gull Feathers Laridae Mediterranean [CHIM]Chemical Sciences [CHIM.ANAL]Chemical Sciences/Analytical chemistry info:eu-repo/semantics/article Journal articles 2024 ftunivpau https://doi.org/10.1016/j.envpol.2024.123739 2024-07-08T14:02:11Z International audience Mercury (Hg) is a global pollutant, which particularly affects aquatic ecosystems, both marine and freshwater. Top-predators depending on these environments, such as seabirds, are regarded as suitable bioindicators of Hg pollution. In the Ebro Delta (NE Iberian Peninsula), legacy Hg pollution from a chlor-alkali industry operating in Flix and located ca. 100 km upstream of the Ebro River mouth has been impacting the delta environment and the neighboring coastal area. Furthermore, levels of Hg in the biota of the Mediterranean Sea are known to be high compared to other marine areas. In this work we used a Hg stable isotopes approach in feathers to understand the processes leading to different Hg concentrations in three Laridae species breeding in sympatry in the area (Audouin's gull Ichthyaetus audouinii, black-headed gull Chroicocephalus ridibundus, common tern Sterna hirundo). These species have distinct trophic ecologies, exhibiting a differential use of marine resources and freshwater resources (i.e., rice paddies prey). Moreover, for Audouin's gull, in which in the Ebro Delta colony temporal differences in Hg levels were documented previously, we used Hg stable isotopes to understand the impact of anthropogenic activities on Hg levels in the colony over time. Hg stable isotopes differentiated the three Laridae species according to their trophic ecologies. Furthermore, for Audouin's gull we observed temporal variations in Hg isotopic signatures possibly owing to anthropogenic-derived pollution in the Ebro Delta. To the best of our knowledge this is the first time Hg stable isotopes have been reported in seabirds from the NW Mediterranean Article in Journal/Newspaper Common tern Sterna hirundo Black-headed Gull Chroicocephalus ridibundus HAL e2s UPPA (Université de Pau et des Pays de l'Adour) Environmental Pollution 347 123739 |
institution |
Open Polar |
collection |
HAL e2s UPPA (Université de Pau et des Pays de l'Adour) |
op_collection_id |
ftunivpau |
language |
English |
topic |
Anthropogenic mercury Audouin's gull Feathers Laridae Mediterranean [CHIM]Chemical Sciences [CHIM.ANAL]Chemical Sciences/Analytical chemistry |
spellingShingle |
Anthropogenic mercury Audouin's gull Feathers Laridae Mediterranean [CHIM]Chemical Sciences [CHIM.ANAL]Chemical Sciences/Analytical chemistry Sánchez-Fortún, Moisès Amouroux, David Tessier, Emmanuel Carrasco, Josep Lluís Sanpera, Carola Mercury stable isotopes in seabirds in the Ebro Delta (NE Iberian Peninsula): Inter-specific and temporal differences |
topic_facet |
Anthropogenic mercury Audouin's gull Feathers Laridae Mediterranean [CHIM]Chemical Sciences [CHIM.ANAL]Chemical Sciences/Analytical chemistry |
description |
International audience Mercury (Hg) is a global pollutant, which particularly affects aquatic ecosystems, both marine and freshwater. Top-predators depending on these environments, such as seabirds, are regarded as suitable bioindicators of Hg pollution. In the Ebro Delta (NE Iberian Peninsula), legacy Hg pollution from a chlor-alkali industry operating in Flix and located ca. 100 km upstream of the Ebro River mouth has been impacting the delta environment and the neighboring coastal area. Furthermore, levels of Hg in the biota of the Mediterranean Sea are known to be high compared to other marine areas. In this work we used a Hg stable isotopes approach in feathers to understand the processes leading to different Hg concentrations in three Laridae species breeding in sympatry in the area (Audouin's gull Ichthyaetus audouinii, black-headed gull Chroicocephalus ridibundus, common tern Sterna hirundo). These species have distinct trophic ecologies, exhibiting a differential use of marine resources and freshwater resources (i.e., rice paddies prey). Moreover, for Audouin's gull, in which in the Ebro Delta colony temporal differences in Hg levels were documented previously, we used Hg stable isotopes to understand the impact of anthropogenic activities on Hg levels in the colony over time. Hg stable isotopes differentiated the three Laridae species according to their trophic ecologies. Furthermore, for Audouin's gull we observed temporal variations in Hg isotopic signatures possibly owing to anthropogenic-derived pollution in the Ebro Delta. To the best of our knowledge this is the first time Hg stable isotopes have been reported in seabirds from the NW Mediterranean |
author2 |
University of Barcelona Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM) Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Sánchez-Fortún, Moisès Amouroux, David Tessier, Emmanuel Carrasco, Josep Lluís Sanpera, Carola |
author_facet |
Sánchez-Fortún, Moisès Amouroux, David Tessier, Emmanuel Carrasco, Josep Lluís Sanpera, Carola |
author_sort |
Sánchez-Fortún, Moisès |
title |
Mercury stable isotopes in seabirds in the Ebro Delta (NE Iberian Peninsula): Inter-specific and temporal differences |
title_short |
Mercury stable isotopes in seabirds in the Ebro Delta (NE Iberian Peninsula): Inter-specific and temporal differences |
title_full |
Mercury stable isotopes in seabirds in the Ebro Delta (NE Iberian Peninsula): Inter-specific and temporal differences |
title_fullStr |
Mercury stable isotopes in seabirds in the Ebro Delta (NE Iberian Peninsula): Inter-specific and temporal differences |
title_full_unstemmed |
Mercury stable isotopes in seabirds in the Ebro Delta (NE Iberian Peninsula): Inter-specific and temporal differences |
title_sort |
mercury stable isotopes in seabirds in the ebro delta (ne iberian peninsula): inter-specific and temporal differences |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://univ-pau.hal.science/hal-04537081 https://univ-pau.hal.science/hal-04537081/document https://univ-pau.hal.science/hal-04537081/file/1-s2.0-S0269749124004536-main.pdf https://doi.org/10.1016/j.envpol.2024.123739 |
genre |
Common tern Sterna hirundo Black-headed Gull Chroicocephalus ridibundus |
genre_facet |
Common tern Sterna hirundo Black-headed Gull Chroicocephalus ridibundus |
op_source |
ISSN: 0269-7491 EISSN: 1873-6424 Environmental Pollution https://univ-pau.hal.science/hal-04537081 Environmental Pollution, 2024, 347, pp.123739. ⟨10.1016/j.envpol.2024.123739⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envpol.2024.123739 hal-04537081 https://univ-pau.hal.science/hal-04537081 https://univ-pau.hal.science/hal-04537081/document https://univ-pau.hal.science/hal-04537081/file/1-s2.0-S0269749124004536-main.pdf doi:10.1016/j.envpol.2024.123739 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.envpol.2024.123739 |
container_title |
Environmental Pollution |
container_volume |
347 |
container_start_page |
123739 |
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1810440179184304128 |