Living and dead Foraminifera as bioindicators in Saquarema Lagoon System, Brazil

ABSTRACT: The understanding of the differences between living (L) and dead (D) benthic foraminiferal assemblages and all the factors that might lead their distribution should be a key to characterize the environmental and paleoenvironmental changes accurately. Population dynamics and dissimilarities...

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Autores principales:	Belart,Pierre, Clemente,Iara, Raposo,Débora, Habib,Renan, Volino,Eduardo K., Villar,Amanda, Alves-Martins,Maria Virgínia, Fontana,Luiz F., Lorini,Maria Lucia, Panigai,Gabriel, Frontalini,Fabrizio, Figueiredo,Marcos S.L., Vasconcelos,Sergio C., Laut,Lazaro
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	foraminifera environmental quality trophic state marine pollution coastal lagoon neontology
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501055
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spelling	oai:scielo:S0718-560X20180005010552019-04-03Living and dead Foraminifera as bioindicators in Saquarema Lagoon System, BrazilBelart,PierreClemente,IaraRaposo,DéboraHabib,RenanVolino,Eduardo K.Villar,AmandaAlves-Martins,Maria VirgíniaFontana,Luiz F.Lorini,Maria LuciaPanigai,GabrielFrontalini,FabrizioFigueiredo,Marcos S.L.Vasconcelos,Sergio C.Laut,Lazaro foraminifera environmental quality trophic state marine pollution coastal lagoon neontology ABSTRACT: The understanding of the differences between living (L) and dead (D) benthic foraminiferal assemblages and all the factors that might lead their distribution should be a key to characterize the environmental and paleoenvironmental changes accurately. Population dynamics and dissimilarities of biological nature (the differences in turnover rate and seasonal alterations in standing stock) can cause significant divergences between the L and D foraminiferal assemblages. This study compares L and D foraminifera to evaluate the sediment quality of the Brazilian Saquarema Lagoon System (SLS) using biogeochemical proxies and predict how coastal ecosystems are responding to the combined effects of eutrophication and pollution pressure and areas where the paleoenvironmental studies can be performed. The SLS is a transitional environment where total organic carbon, proteins, and dissolved oxygen are the main factors controlling the distribution of foraminiferal assemblage. The high values of biopolymers (carbohydrates, lipids, and proteins) in SLS indicate a very impacted environment with long water residence time. The low values of species richness, Shannon-Weaver diversity, and evenness for both L and D foraminiferal assemblages are a consequence of fluctuating conditions in the SLS. Due to low salinities, agglutinated species and Quinqueloculina seminula can occur in the most confined areas, and Ammonia parkinsoniana, Cribroelphidium excavatum, Cribroelphidium poeyanum, and Elphidium gunteri characterized the area with the highest marine influence. Although in most of the SLS the taphonomic processes modified the original assemblage, in some regions the thanatocoenosis corresponds to the biocenosis. These areas can be considered the most suitable for future paleoenvironmental and paleoclimatic studies.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.5 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501055en10.3856/vol46-issue5-fulltext-18
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	foraminifera environmental quality trophic state marine pollution coastal lagoon neontology
spellingShingle	foraminifera environmental quality trophic state marine pollution coastal lagoon neontology Belart,Pierre Clemente,Iara Raposo,Débora Habib,Renan Volino,Eduardo K. Villar,Amanda Alves-Martins,Maria Virgínia Fontana,Luiz F. Lorini,Maria Lucia Panigai,Gabriel Frontalini,Fabrizio Figueiredo,Marcos S.L. Vasconcelos,Sergio C. Laut,Lazaro Living and dead Foraminifera as bioindicators in Saquarema Lagoon System, Brazil
description	ABSTRACT: The understanding of the differences between living (L) and dead (D) benthic foraminiferal assemblages and all the factors that might lead their distribution should be a key to characterize the environmental and paleoenvironmental changes accurately. Population dynamics and dissimilarities of biological nature (the differences in turnover rate and seasonal alterations in standing stock) can cause significant divergences between the L and D foraminiferal assemblages. This study compares L and D foraminifera to evaluate the sediment quality of the Brazilian Saquarema Lagoon System (SLS) using biogeochemical proxies and predict how coastal ecosystems are responding to the combined effects of eutrophication and pollution pressure and areas where the paleoenvironmental studies can be performed. The SLS is a transitional environment where total organic carbon, proteins, and dissolved oxygen are the main factors controlling the distribution of foraminiferal assemblage. The high values of biopolymers (carbohydrates, lipids, and proteins) in SLS indicate a very impacted environment with long water residence time. The low values of species richness, Shannon-Weaver diversity, and evenness for both L and D foraminiferal assemblages are a consequence of fluctuating conditions in the SLS. Due to low salinities, agglutinated species and Quinqueloculina seminula can occur in the most confined areas, and Ammonia parkinsoniana, Cribroelphidium excavatum, Cribroelphidium poeyanum, and Elphidium gunteri characterized the area with the highest marine influence. Although in most of the SLS the taphonomic processes modified the original assemblage, in some regions the thanatocoenosis corresponds to the biocenosis. These areas can be considered the most suitable for future paleoenvironmental and paleoclimatic studies.
author	Belart,Pierre Clemente,Iara Raposo,Débora Habib,Renan Volino,Eduardo K. Villar,Amanda Alves-Martins,Maria Virgínia Fontana,Luiz F. Lorini,Maria Lucia Panigai,Gabriel Frontalini,Fabrizio Figueiredo,Marcos S.L. Vasconcelos,Sergio C. Laut,Lazaro
author_facet	Belart,Pierre Clemente,Iara Raposo,Débora Habib,Renan Volino,Eduardo K. Villar,Amanda Alves-Martins,Maria Virgínia Fontana,Luiz F. Lorini,Maria Lucia Panigai,Gabriel Frontalini,Fabrizio Figueiredo,Marcos S.L. Vasconcelos,Sergio C. Laut,Lazaro
author_sort	Belart,Pierre
title	Living and dead Foraminifera as bioindicators in Saquarema Lagoon System, Brazil
title_short	Living and dead Foraminifera as bioindicators in Saquarema Lagoon System, Brazil
title_full	Living and dead Foraminifera as bioindicators in Saquarema Lagoon System, Brazil
title_fullStr	Living and dead Foraminifera as bioindicators in Saquarema Lagoon System, Brazil
title_full_unstemmed	Living and dead Foraminifera as bioindicators in Saquarema Lagoon System, Brazil
title_sort	living and dead foraminifera as bioindicators in saquarema lagoon system, brazil
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501055
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Living and dead Foraminifera as bioindicators in Saquarema Lagoon System, Brazil

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