Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy)
Methylmercury (MeHg), a neurotoxic pollutant, is formed mainly under anaerobiosis. The "Modulo Sperimentale Elettromeccanico" (MOSE), built to temporarily close the Venice Lagoon and protect the city from flooding, induces changes in the hydrological regime, reducing water circulation and...
| Autores: | , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:304554 |
| Acceso en línea: | https://ddd.uab.cat/record/304554 https://dx.doi.org/urn:doi:10.1016/j.jhazmat.2024.136747 |
| Access Level: | acceso abierto |
| Palabra clave: | MeHg formation Sediments Temperature MOSE Venice Lagoon Oxygen depletion |
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Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy)Pereira Garcia, Carla|||0000-0002-0178-544XBravo, Andrea G.|||0000-0002-8341-3462Cosio, ClaudiaGallorini, AndreaLeoni, SimoneCassin, DanieleGuédron, Stéphane|||0000-0003-4229-1566Adatte, ThierryCabrera-Brufau, Miguel|||0000-0002-0740-9306Sánchez Martínez, M. Olga|||0000-0003-1254-012XAcinas, Silvia G.|||0000-0002-3439-0428Amouroux, David|||0000-0002-0056-8590Zonta, RobertoDominik, JanuszLoizeau, Jean-Luc|||0000-0002-0611-0388MeHg formationSedimentsTemperatureMOSEVenice LagoonOxygen depletionMethylmercury (MeHg), a neurotoxic pollutant, is formed mainly under anaerobiosis. The "Modulo Sperimentale Elettromeccanico" (MOSE), built to temporarily close the Venice Lagoon and protect the city from flooding, induces changes in the hydrological regime, reducing water circulation and decreasing in the dissolved oxygen concentrations of the lagoon. Our study shows the potential changes in sediment and overlying water physico-chemistry in a simulated MOSE closing-event by incubating sediment cores for 48 h in the laboratory and deploying benthic chambers. In the incubated summer cores (September 2021), a significant increase in total Hg and MeHg concentrations in the water column was observed and associated with an increase in MeHg formation rates - particularly, MeHg formation rates doubled during the simulated MOSE-closing. This increase was associated to a release of dissolved organic carbon and to an enrichment of proteinaceous substances and reactive humic acids in the overlying waters. All these effects were not evident in late autumn (November 2019), when water temperature was 10 °C lower than in September 2021. Our study suggests that hydrological changes caused by the MOSE closure may in some periods increase MeHg concentrations within the Venice Lagoon. 22025-01-0120252025-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/304554https://dx.doi.org/urn:doi:10.1016/j.jhazmat.2024.136747reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 RYC2019-028400European Commission https://doi.org/10.13039/501100000780 749645Instituto de Salud Carlos III https://doi.org/10.13039/501100004587 FPU16-01925Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-0047Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CEX2019-000298-Sopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:3045542026-06-06T12:50:31Z |
| dc.title.none.fl_str_mv |
Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy) |
| title |
Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy) |
| spellingShingle |
Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy) Pereira Garcia, Carla|||0000-0002-0178-544X MeHg formation Sediments Temperature MOSE Venice Lagoon Oxygen depletion |
| title_short |
Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy) |
| title_full |
Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy) |
| title_fullStr |
Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy) |
| title_full_unstemmed |
Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy) |
| title_sort |
Potential impact of tide-regulation barriers on the formation of methylmercury in the Venice Lagoon (Italy) |
| dc.creator.none.fl_str_mv |
Pereira Garcia, Carla|||0000-0002-0178-544X Bravo, Andrea G.|||0000-0002-8341-3462 Cosio, Claudia Gallorini, Andrea Leoni, Simone Cassin, Daniele Guédron, Stéphane|||0000-0003-4229-1566 Adatte, Thierry Cabrera-Brufau, Miguel|||0000-0002-0740-9306 Sánchez Martínez, M. Olga|||0000-0003-1254-012X Acinas, Silvia G.|||0000-0002-3439-0428 Amouroux, David|||0000-0002-0056-8590 Zonta, Roberto Dominik, Janusz Loizeau, Jean-Luc|||0000-0002-0611-0388 |
| author |
Pereira Garcia, Carla|||0000-0002-0178-544X |
| author_facet |
Pereira Garcia, Carla|||0000-0002-0178-544X Bravo, Andrea G.|||0000-0002-8341-3462 Cosio, Claudia Gallorini, Andrea Leoni, Simone Cassin, Daniele Guédron, Stéphane|||0000-0003-4229-1566 Adatte, Thierry Cabrera-Brufau, Miguel|||0000-0002-0740-9306 Sánchez Martínez, M. Olga|||0000-0003-1254-012X Acinas, Silvia G.|||0000-0002-3439-0428 Amouroux, David|||0000-0002-0056-8590 Zonta, Roberto Dominik, Janusz Loizeau, Jean-Luc|||0000-0002-0611-0388 |
| author_role |
author |
| author2 |
Bravo, Andrea G.|||0000-0002-8341-3462 Cosio, Claudia Gallorini, Andrea Leoni, Simone Cassin, Daniele Guédron, Stéphane|||0000-0003-4229-1566 Adatte, Thierry Cabrera-Brufau, Miguel|||0000-0002-0740-9306 Sánchez Martínez, M. Olga|||0000-0003-1254-012X Acinas, Silvia G.|||0000-0002-3439-0428 Amouroux, David|||0000-0002-0056-8590 Zonta, Roberto Dominik, Janusz Loizeau, Jean-Luc|||0000-0002-0611-0388 |
| author2_role |
author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
MeHg formation Sediments Temperature MOSE Venice Lagoon Oxygen depletion |
| topic |
MeHg formation Sediments Temperature MOSE Venice Lagoon Oxygen depletion |
| description |
Methylmercury (MeHg), a neurotoxic pollutant, is formed mainly under anaerobiosis. The "Modulo Sperimentale Elettromeccanico" (MOSE), built to temporarily close the Venice Lagoon and protect the city from flooding, induces changes in the hydrological regime, reducing water circulation and decreasing in the dissolved oxygen concentrations of the lagoon. Our study shows the potential changes in sediment and overlying water physico-chemistry in a simulated MOSE closing-event by incubating sediment cores for 48 h in the laboratory and deploying benthic chambers. In the incubated summer cores (September 2021), a significant increase in total Hg and MeHg concentrations in the water column was observed and associated with an increase in MeHg formation rates - particularly, MeHg formation rates doubled during the simulated MOSE-closing. This increase was associated to a release of dissolved organic carbon and to an enrichment of proteinaceous substances and reactive humic acids in the overlying waters. All these effects were not evident in late autumn (November 2019), when water temperature was 10 °C lower than in September 2021. Our study suggests that hydrological changes caused by the MOSE closure may in some periods increase MeHg concentrations within the Venice Lagoon. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2 2025-01-01 2025 2025-01-01 |
| dc.type.none.fl_str_mv |
Article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
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article |
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https://ddd.uab.cat/record/304554 https://dx.doi.org/urn:doi:10.1016/j.jhazmat.2024.136747 |
| url |
https://ddd.uab.cat/record/304554 https://dx.doi.org/urn:doi:10.1016/j.jhazmat.2024.136747 |
| dc.language.none.fl_str_mv |
Inglés eng |
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Inglés |
| language |
eng |
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Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 RYC2019-028400 European Commission https://doi.org/10.13039/501100000780 749645 Instituto de Salud Carlos III https://doi.org/10.13039/501100004587 FPU16-01925 Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-0047 Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CEX2019-000298-S |
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open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
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openAccess |
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