Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/5856 http://dx.doi.org/10.1590/S1679-87592015064506301 |
Resumo: | Monthly sampling campaigns were carried out between February 2010 and January 2011 to evaluate the spatial and temporal distribution of nutrients (ammonium, nitrite, nitrate, dissolved organic nitrogen, phosphate, dissolved organic phosphorus and silicate) and chlorophyll-α along a salinity gradient in the tropical Cachoeira River estuary, subject to the untreated effluents of a sewage treatment plant (STP). During the study period the lowest and highest river discharge occurred in February and April 2010, respectively. High river outflow promoted increased concentrations of inorganic nitrogen and silicate but did not affect the concentration of phosphate. Based on the chlorophyll-α concentration the estuary may be classified as eutrophic / hypereutrophic in its inner portion and mesotrophic in the lower region. The inner portion is more affected by the nutrient load carried out by the river and STP, while dilution by seawater contributed to the reduction of the nutrient concentrations in the lower reaches of the estuary. The results indicate that nutrient uptake by the phytoplankton is the most effective dissolved inorganic nutrient removal processes, especially for phosphate. Mixing diagrams suggest that the coupling of nitrification and denitrification processes is also responsible for the elimination of nitrogen from this ecosystem. |
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Silva, Maria Aparecida MacedoSouza, MarceloAbreu, Paulo Cesar Oliveira Vergne de2016-01-21T23:12:21Z2016-01-21T23:12:21Z2015SILVA, Maria Aparecida Macedo; SOUZA, Marcelo; ABREU, Paulo Cesar Oliveira Vergne de. Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal. Brazilian Journal of Oceanography (Online), v. 63, n. 1, p. 1-15, 2015. Disponível em: <http://www.scielo.br/pdf/bjoce/v63n1/1679-8759-bjoce-63-01-0001.pdf>. Acesso em: 21 jan. 2016.1982-436Xhttp://repositorio.furg.br/handle/1/5856http://dx.doi.org/10.1590/S1679-87592015064506301Monthly sampling campaigns were carried out between February 2010 and January 2011 to evaluate the spatial and temporal distribution of nutrients (ammonium, nitrite, nitrate, dissolved organic nitrogen, phosphate, dissolved organic phosphorus and silicate) and chlorophyll-α along a salinity gradient in the tropical Cachoeira River estuary, subject to the untreated effluents of a sewage treatment plant (STP). During the study period the lowest and highest river discharge occurred in February and April 2010, respectively. High river outflow promoted increased concentrations of inorganic nitrogen and silicate but did not affect the concentration of phosphate. Based on the chlorophyll-α concentration the estuary may be classified as eutrophic / hypereutrophic in its inner portion and mesotrophic in the lower region. The inner portion is more affected by the nutrient load carried out by the river and STP, while dilution by seawater contributed to the reduction of the nutrient concentrations in the lower reaches of the estuary. The results indicate that nutrient uptake by the phytoplankton is the most effective dissolved inorganic nutrient removal processes, especially for phosphate. Mixing diagrams suggest that the coupling of nitrification and denitrification processes is also responsible for the elimination of nitrogen from this ecosystem.Campanhas de amostragens mensais foram realizadas entre fevereiro de 2010 e janeiro de 2011 para avaliar a distribuição espacial e temporal de nutrientes (amônia, nitrito, nitrato, nitrogênio orgânico dissolvido, fosfato, fósforo orgânico dissolvido e silicato) e clorofila-α, ao longo do gradiente de salinidade no estuário tropical do Rio Cachoeira. Este estuário é sujeito aos efluentes de esgotos não tratados de uma estação de tratamento de esgoto (ETE). No período estudado a maior e menor vazão do rio ocorreram em fevereiro e abril de 2010, respectivamente. A alta vazão do rio promoveu aumento das concentrações de nitrogênio inorgânico e silicato, mas não afetou as concentrações de fosfato. Baseado nas concentrações de clorofila-α, o estuário pode ser classificado como eutrófico/hipereutrófico na porção interna e mesotrófico na região externa. A porção interna é mais afetada pela carga de nutrientes do rio e da ETE, enquanto a diluição pela água marinha contribuiu para diminuir as concentrações de nutrientes na porção externa. Os resultados indicam que a absorção de nutrientes pelo fitoplâncton é o processo mais eficiente na remoção desses nutrientes, especialmente do fosfato. No entanto, os diagramas de mistura sugerem que a nitrificação e denitrificação acopladas no rio também são responsáveis pela eliminação do nitrogênio do ecossistema.engEutrophicationSewageMixing diagramsAmmoniacal nitrogenNitratePhosphateEutrofizaçãoEsgotoDiagrama de misturaNitrogênio amoniacalNitratoFosfatoSpatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removalinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURGORIGINAL1679-8759-bjoce-63-01-0001.pdf1679-8759-bjoce-63-01-0001.pdfapplication/pdf388298https://repositorio.furg.br/bitstream/1/5856/1/1679-8759-bjoce-63-01-0001.pdf54df439384b6a396f71b770bd0ff7a13MD51open accessLICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://repositorio.furg.br/bitstream/1/5856/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52open access1/58562016-01-21 21:12:21.48open accessoai:repositorio.furg.br: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Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2016-01-21T23:12:21Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.pt_BR.fl_str_mv |
Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal |
title |
Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal |
spellingShingle |
Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal Silva, Maria Aparecida Macedo Eutrophication Sewage Mixing diagrams Ammoniacal nitrogen Nitrate Phosphate Eutrofização Esgoto Diagrama de mistura Nitrogênio amoniacal Nitrato Fosfato |
title_short |
Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal |
title_full |
Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal |
title_fullStr |
Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal |
title_full_unstemmed |
Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal |
title_sort |
Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal |
author |
Silva, Maria Aparecida Macedo |
author_facet |
Silva, Maria Aparecida Macedo Souza, Marcelo Abreu, Paulo Cesar Oliveira Vergne de |
author_role |
author |
author2 |
Souza, Marcelo Abreu, Paulo Cesar Oliveira Vergne de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Silva, Maria Aparecida Macedo Souza, Marcelo Abreu, Paulo Cesar Oliveira Vergne de |
dc.subject.por.fl_str_mv |
Eutrophication Sewage Mixing diagrams Ammoniacal nitrogen Nitrate Phosphate Eutrofização Esgoto Diagrama de mistura Nitrogênio amoniacal Nitrato Fosfato |
topic |
Eutrophication Sewage Mixing diagrams Ammoniacal nitrogen Nitrate Phosphate Eutrofização Esgoto Diagrama de mistura Nitrogênio amoniacal Nitrato Fosfato |
description |
Monthly sampling campaigns were carried out between February 2010 and January 2011 to evaluate the spatial and temporal distribution of nutrients (ammonium, nitrite, nitrate, dissolved organic nitrogen, phosphate, dissolved organic phosphorus and silicate) and chlorophyll-α along a salinity gradient in the tropical Cachoeira River estuary, subject to the untreated effluents of a sewage treatment plant (STP). During the study period the lowest and highest river discharge occurred in February and April 2010, respectively. High river outflow promoted increased concentrations of inorganic nitrogen and silicate but did not affect the concentration of phosphate. Based on the chlorophyll-α concentration the estuary may be classified as eutrophic / hypereutrophic in its inner portion and mesotrophic in the lower region. The inner portion is more affected by the nutrient load carried out by the river and STP, while dilution by seawater contributed to the reduction of the nutrient concentrations in the lower reaches of the estuary. The results indicate that nutrient uptake by the phytoplankton is the most effective dissolved inorganic nutrient removal processes, especially for phosphate. Mixing diagrams suggest that the coupling of nitrification and denitrification processes is also responsible for the elimination of nitrogen from this ecosystem. |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015 |
dc.date.accessioned.fl_str_mv |
2016-01-21T23:12:21Z |
dc.date.available.fl_str_mv |
2016-01-21T23:12:21Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SILVA, Maria Aparecida Macedo; SOUZA, Marcelo; ABREU, Paulo Cesar Oliveira Vergne de. Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal. Brazilian Journal of Oceanography (Online), v. 63, n. 1, p. 1-15, 2015. Disponível em: <http://www.scielo.br/pdf/bjoce/v63n1/1679-8759-bjoce-63-01-0001.pdf>. Acesso em: 21 jan. 2016. |
dc.identifier.uri.fl_str_mv |
http://repositorio.furg.br/handle/1/5856 |
dc.identifier.issn.none.fl_str_mv |
1982-436X |
dc.identifier.doi.pt_BR.fl_str_mv |
http://dx.doi.org/10.1590/S1679-87592015064506301 |
identifier_str_mv |
SILVA, Maria Aparecida Macedo; SOUZA, Marcelo; ABREU, Paulo Cesar Oliveira Vergne de. Spatial and temporalvariation of dissolved inorganic nutrients, and chlorophyll-α in a tropical estuary in northeastern brazil: dynamics of nutrient removal. Brazilian Journal of Oceanography (Online), v. 63, n. 1, p. 1-15, 2015. Disponível em: <http://www.scielo.br/pdf/bjoce/v63n1/1679-8759-bjoce-63-01-0001.pdf>. Acesso em: 21 jan. 2016. 1982-436X |
url |
http://repositorio.furg.br/handle/1/5856 http://dx.doi.org/10.1590/S1679-87592015064506301 |
dc.language.iso.fl_str_mv |
eng |
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eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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reponame:Repositório Institucional da FURG (RI FURG) instname:Universidade Federal do Rio Grande (FURG) instacron:FURG |
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Universidade Federal do Rio Grande (FURG) |
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