Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystem
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.20950/1678-2305.2019.45.4.487 http://hdl.handle.net/11449/199685 |
Resumo: | The Estuarine-Lagoon Complex of Cananeia-Iguape (ELCCI) is a large estuarine system dominated by mangroves, located on the southeast coast of Brazil (25° S, 48° W). Oyster farming is an important economic activity in Cananeia due to the natural abundance of oyster seeds originally found in its mangrove fields. The aim of this study was to describe the hydrodynamic aspects of the mangrove and oyster farming in the ELCCI by analyzing environmental scenarios using numerical simulations. Simulations allowed for the description of the distance of penetration of the salt wedge into the system as well as the direction and magnitude of the tidal currents. Higher values of river discharge corresponded to lower distances of penetration of the salt wedge, a feature which shows that the freshwater discharge and geomorphology together determine the variation in salinity within the estuary. Oysters are cultivated in regions of higher salinity and relatively stable conditions, with low speeds of tidal currents and little vertical variation in salinity. Under average river discharge conditions (450 m3.s-1), there is a confluence of tidal waves in Mar Pequeno, where velocity is lower. This change may lead to a higher sedimentation at restricted areas and thus to a higher deposition of organic matter derived from oyster cultivations during flood tides. |
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Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystemModelagem numérica como instrumento de apoio à aquicultura de ostras em um ecossistema estuarino subtropicalHydrodynamicsNumerical modelingOyster farmingSubtropical estuariesThe Estuarine-Lagoon Complex of Cananeia-Iguape (ELCCI) is a large estuarine system dominated by mangroves, located on the southeast coast of Brazil (25° S, 48° W). Oyster farming is an important economic activity in Cananeia due to the natural abundance of oyster seeds originally found in its mangrove fields. The aim of this study was to describe the hydrodynamic aspects of the mangrove and oyster farming in the ELCCI by analyzing environmental scenarios using numerical simulations. Simulations allowed for the description of the distance of penetration of the salt wedge into the system as well as the direction and magnitude of the tidal currents. Higher values of river discharge corresponded to lower distances of penetration of the salt wedge, a feature which shows that the freshwater discharge and geomorphology together determine the variation in salinity within the estuary. Oysters are cultivated in regions of higher salinity and relatively stable conditions, with low speeds of tidal currents and little vertical variation in salinity. Under average river discharge conditions (450 m3.s-1), there is a confluence of tidal waves in Mar Pequeno, where velocity is lower. This change may lead to a higher sedimentation at restricted areas and thus to a higher deposition of organic matter derived from oyster cultivations during flood tides.Universidade Estadual Paulista – UNESP Instituto de Biociências Campus Litoral Paulista, Pça. Infante Dom Henrique s/n, Pque. BitaruGoverno do Estado de São Paulo Secretaria de Agricultura e Abastecimento Instituto de Pesca da Secretária da Agricultura do Estado de São Paulo, Av. Professor Besnard s/n, Morro do São JoãoUniversidade Estadual Paulista – UNESP Instituto de Biociências Campus Litoral Paulista, Pça. Infante Dom Henrique s/n, Pque. BitaruUniversidade Estadual Paulista (Unesp)Instituto de Pesca da Secretária da Agricultura do Estado de São PauloFontes, Roberto Fioravanti Carelli [UNESP]Fey, Jésica Daniela [UNESP]de Oliveira, Ana Júlia Fernandes Cardoso [UNESP]Barbieri, Edison2020-12-12T01:46:33Z2020-12-12T01:46:33Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.20950/1678-2305.2019.45.4.487Boletim do Instituto de Pesca, v. 45, n. 4, 2019.0046-99391678-2305http://hdl.handle.net/11449/19968510.20950/1678-2305.2019.45.4.4872-s2.0-8507529215249414927450517310000-0002-2947-1960Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBoletim do Instituto de Pescainfo:eu-repo/semantics/openAccess2021-10-23T08:53:45Zoai:repositorio.unesp.br:11449/199685Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T08:53:45Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystem Modelagem numérica como instrumento de apoio à aquicultura de ostras em um ecossistema estuarino subtropical |
title |
Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystem |
spellingShingle |
Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystem Fontes, Roberto Fioravanti Carelli [UNESP] Hydrodynamics Numerical modeling Oyster farming Subtropical estuaries |
title_short |
Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystem |
title_full |
Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystem |
title_fullStr |
Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystem |
title_full_unstemmed |
Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystem |
title_sort |
Numerical modeling as supporting tool for aquaculture of oysters in a subtropical estuarine ecosystem |
author |
Fontes, Roberto Fioravanti Carelli [UNESP] |
author_facet |
Fontes, Roberto Fioravanti Carelli [UNESP] Fey, Jésica Daniela [UNESP] de Oliveira, Ana Júlia Fernandes Cardoso [UNESP] Barbieri, Edison |
author_role |
author |
author2 |
Fey, Jésica Daniela [UNESP] de Oliveira, Ana Júlia Fernandes Cardoso [UNESP] Barbieri, Edison |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Instituto de Pesca da Secretária da Agricultura do Estado de São Paulo |
dc.contributor.author.fl_str_mv |
Fontes, Roberto Fioravanti Carelli [UNESP] Fey, Jésica Daniela [UNESP] de Oliveira, Ana Júlia Fernandes Cardoso [UNESP] Barbieri, Edison |
dc.subject.por.fl_str_mv |
Hydrodynamics Numerical modeling Oyster farming Subtropical estuaries |
topic |
Hydrodynamics Numerical modeling Oyster farming Subtropical estuaries |
description |
The Estuarine-Lagoon Complex of Cananeia-Iguape (ELCCI) is a large estuarine system dominated by mangroves, located on the southeast coast of Brazil (25° S, 48° W). Oyster farming is an important economic activity in Cananeia due to the natural abundance of oyster seeds originally found in its mangrove fields. The aim of this study was to describe the hydrodynamic aspects of the mangrove and oyster farming in the ELCCI by analyzing environmental scenarios using numerical simulations. Simulations allowed for the description of the distance of penetration of the salt wedge into the system as well as the direction and magnitude of the tidal currents. Higher values of river discharge corresponded to lower distances of penetration of the salt wedge, a feature which shows that the freshwater discharge and geomorphology together determine the variation in salinity within the estuary. Oysters are cultivated in regions of higher salinity and relatively stable conditions, with low speeds of tidal currents and little vertical variation in salinity. Under average river discharge conditions (450 m3.s-1), there is a confluence of tidal waves in Mar Pequeno, where velocity is lower. This change may lead to a higher sedimentation at restricted areas and thus to a higher deposition of organic matter derived from oyster cultivations during flood tides. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2020-12-12T01:46:33Z 2020-12-12T01:46:33Z |
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.uri.fl_str_mv |
http://dx.doi.org/10.20950/1678-2305.2019.45.4.487 Boletim do Instituto de Pesca, v. 45, n. 4, 2019. 0046-9939 1678-2305 http://hdl.handle.net/11449/199685 10.20950/1678-2305.2019.45.4.487 2-s2.0-85075292152 4941492745051731 0000-0002-2947-1960 |
url |
http://dx.doi.org/10.20950/1678-2305.2019.45.4.487 http://hdl.handle.net/11449/199685 |
identifier_str_mv |
Boletim do Instituto de Pesca, v. 45, n. 4, 2019. 0046-9939 1678-2305 10.20950/1678-2305.2019.45.4.487 2-s2.0-85075292152 4941492745051731 0000-0002-2947-1960 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Boletim do Instituto de Pesca |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1799965389169360896 |