Greenhouse gas emission from a eutrophic coastal lagoon in Rio de Janeiro, Brazil

ABSTRACT Greenhouse gases increased in concentrations over pre-industrial values by 257% for methane and 145% for carbon dioxide in 2016. Such increased levels are the main climate change drivers and may affect aquatic systems that accumulate and carry carbon to the ocean and the atmosphere. Additio...

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Autores principales:	Fonseca-Viana,Alessandra da, Santos,Marco Aurélio dos, Corrêa-Bernardes,Marcelo, Amorim,Marcelo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2019
Materias:	carbon dioxide methane diffusive flux ebullitive flux sink source southern Brazil
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000400638
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spelling	oai:scielo:S0718-560X20190004006382019-09-24Greenhouse gas emission from a eutrophic coastal lagoon in Rio de Janeiro, BrazilFonseca-Viana,Alessandra daSantos,Marco Aurélio dosCorrêa-Bernardes,MarceloAmorim,Marcelo carbon dioxide methane diffusive flux ebullitive flux sink source southern Brazil ABSTRACT Greenhouse gases increased in concentrations over pre-industrial values by 257% for methane and 145% for carbon dioxide in 2016. Such increased levels are the main climate change drivers and may affect aquatic systems that accumulate and carry carbon to the ocean and the atmosphere. Additionally, these systems are sensitive to environmental changes since their physical, chemical and biological properties respond rapidly to changes. Therefore, this study focus on the greenhouse gases dynamic over an urban eutrophic tropical lagoon. Samplings were performed in the Rodrigo de Freitas Lagoon by covering four periods in 2016 (April, June, October and December). Mean diffusive flux was −1,466.8 mg m-2 d-1 of carbon dioxide and 113.7 mg m-2 d-1 of methane. Regarding the bubbling, fluxes were 58.28 mg m-2 d-1 for methane and negligible for carbon dioxide (mean value of 5.01 mg m-2 d-1). Environmental parameters such as depth, water temperature and sediment particle size were strongly related to the fluxes. In conclusion, the region is a sink of carbon dioxide and a source of methane to the atmosphere. Additionally, the rivers discharge impacts the lagoon by generating a methane hotspot emission region.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.47 n.4 20192019-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000400638en10.3856/vol47-issue4-fulltext-6
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	carbon dioxide methane diffusive flux ebullitive flux sink source southern Brazil
spellingShingle	carbon dioxide methane diffusive flux ebullitive flux sink source southern Brazil Fonseca-Viana,Alessandra da Santos,Marco Aurélio dos Corrêa-Bernardes,Marcelo Amorim,Marcelo Greenhouse gas emission from a eutrophic coastal lagoon in Rio de Janeiro, Brazil
description	ABSTRACT Greenhouse gases increased in concentrations over pre-industrial values by 257% for methane and 145% for carbon dioxide in 2016. Such increased levels are the main climate change drivers and may affect aquatic systems that accumulate and carry carbon to the ocean and the atmosphere. Additionally, these systems are sensitive to environmental changes since their physical, chemical and biological properties respond rapidly to changes. Therefore, this study focus on the greenhouse gases dynamic over an urban eutrophic tropical lagoon. Samplings were performed in the Rodrigo de Freitas Lagoon by covering four periods in 2016 (April, June, October and December). Mean diffusive flux was −1,466.8 mg m-2 d-1 of carbon dioxide and 113.7 mg m-2 d-1 of methane. Regarding the bubbling, fluxes were 58.28 mg m-2 d-1 for methane and negligible for carbon dioxide (mean value of 5.01 mg m-2 d-1). Environmental parameters such as depth, water temperature and sediment particle size were strongly related to the fluxes. In conclusion, the region is a sink of carbon dioxide and a source of methane to the atmosphere. Additionally, the rivers discharge impacts the lagoon by generating a methane hotspot emission region.
author	Fonseca-Viana,Alessandra da Santos,Marco Aurélio dos Corrêa-Bernardes,Marcelo Amorim,Marcelo
author_facet	Fonseca-Viana,Alessandra da Santos,Marco Aurélio dos Corrêa-Bernardes,Marcelo Amorim,Marcelo
author_sort	Fonseca-Viana,Alessandra da
title	Greenhouse gas emission from a eutrophic coastal lagoon in Rio de Janeiro, Brazil
title_short	Greenhouse gas emission from a eutrophic coastal lagoon in Rio de Janeiro, Brazil
title_full	Greenhouse gas emission from a eutrophic coastal lagoon in Rio de Janeiro, Brazil
title_fullStr	Greenhouse gas emission from a eutrophic coastal lagoon in Rio de Janeiro, Brazil
title_full_unstemmed	Greenhouse gas emission from a eutrophic coastal lagoon in Rio de Janeiro, Brazil
title_sort	greenhouse gas emission from a eutrophic coastal lagoon in rio de janeiro, brazil
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000400638
work_keys_str_mv	AT fonsecavianaalessandrada greenhousegasemissionfromaeutrophiccoastallagooninriodejaneirobrazil AT santosmarcoaureliodos greenhousegasemissionfromaeutrophiccoastallagooninriodejaneirobrazil AT correabernardesmarcelo greenhousegasemissionfromaeutrophiccoastallagooninriodejaneirobrazil AT amorimmarcelo greenhousegasemissionfromaeutrophiccoastallagooninriodejaneirobrazil
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Greenhouse gas emission from a eutrophic coastal lagoon in Rio de Janeiro, Brazil

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