Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuary
Main Author: | |
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Publication Date: | 2001 |
Other Authors: | , , , , |
Format: | Article |
Language: | eng |
Source: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Download full: | http://hdl.handle.net/10400.2/14023 |
Summary: | The bacterioplankton is a key component of the structure and function of aquatic ecosystems. Yet, present understanding of the controls on microbial abundance and activity only highlights their complexity. In estuaries, the problem is further complicated by the high variability of environmental properties (salinity, temperature, pH, organic loading and other factors). The present study investigates the dynamics of three main metabolic groups of planktonic bacteria involved in the cycling of organic matter (aerobic heterotrophic bacteria, sulphate-reducing bacteria, and nitrate-reducing bacteria), over one tidal cycle in the estuary of the Mondego. The association of various physical, chemical and biological parameters with the composition of the bacterial community was assessed by multivariate analysis in order to identify key factors controlling the composition and tidal dynamics of the bacterial communities in the Mondego estuary. Principal component analysis (PCA) identified the sources of variability for the bacterial communities in the estuary, as being, on one hand, the different dynamics in the two stations under study (Foz and Pranto) and, on the other hand, the flood and ebb tide fluxes, by their effects in the environmental parameters. |
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Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuaryBacterioplanktonEstuarine ecologyTidal variationODS::14:Proteger a Vida MarinhaThe bacterioplankton is a key component of the structure and function of aquatic ecosystems. Yet, present understanding of the controls on microbial abundance and activity only highlights their complexity. In estuaries, the problem is further complicated by the high variability of environmental properties (salinity, temperature, pH, organic loading and other factors). The present study investigates the dynamics of three main metabolic groups of planktonic bacteria involved in the cycling of organic matter (aerobic heterotrophic bacteria, sulphate-reducing bacteria, and nitrate-reducing bacteria), over one tidal cycle in the estuary of the Mondego. The association of various physical, chemical and biological parameters with the composition of the bacterial community was assessed by multivariate analysis in order to identify key factors controlling the composition and tidal dynamics of the bacterial communities in the Mondego estuary. Principal component analysis (PCA) identified the sources of variability for the bacterial communities in the estuary, as being, on one hand, the different dynamics in the two stations under study (Foz and Pranto) and, on the other hand, the flood and ebb tide fluxes, by their effects in the environmental parameters.PRAXIS/P/MGS/11238/1998 - Impacto humano sobre a dinâmica estuarina de matéria e energia – bases para a gestão integrada de ecossistemas estuarinos - PROGRAMA PRAXIS XXI/98.Repositório AbertoNicolau, Paula BacelarMarques, João C.Morgado, FernandoPastorinho, RamiresNicolau, Leonor BacelarAzeiteiro, Ulisses2023-06-14T11:01:16Z20012001-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.2/14023enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-16T15:46:37Zoai:repositorioaberto.uab.pt:10400.2/14023Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:52:59.515396Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuary |
title |
Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuary |
spellingShingle |
Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuary Nicolau, Paula Bacelar Bacterioplankton Estuarine ecology Tidal variation ODS::14:Proteger a Vida Marinha |
title_short |
Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuary |
title_full |
Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuary |
title_fullStr |
Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuary |
title_full_unstemmed |
Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuary |
title_sort |
Tide-induced variations in the bacterial community, and in the physical and chemical properties of the water column of the Mondego estuary |
author |
Nicolau, Paula Bacelar |
author_facet |
Nicolau, Paula Bacelar Marques, João C. Morgado, Fernando Pastorinho, Ramires Nicolau, Leonor Bacelar Azeiteiro, Ulisses |
author_role |
author |
author2 |
Marques, João C. Morgado, Fernando Pastorinho, Ramires Nicolau, Leonor Bacelar Azeiteiro, Ulisses |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Repositório Aberto |
dc.contributor.author.fl_str_mv |
Nicolau, Paula Bacelar Marques, João C. Morgado, Fernando Pastorinho, Ramires Nicolau, Leonor Bacelar Azeiteiro, Ulisses |
dc.subject.por.fl_str_mv |
Bacterioplankton Estuarine ecology Tidal variation ODS::14:Proteger a Vida Marinha |
topic |
Bacterioplankton Estuarine ecology Tidal variation ODS::14:Proteger a Vida Marinha |
description |
The bacterioplankton is a key component of the structure and function of aquatic ecosystems. Yet, present understanding of the controls on microbial abundance and activity only highlights their complexity. In estuaries, the problem is further complicated by the high variability of environmental properties (salinity, temperature, pH, organic loading and other factors). The present study investigates the dynamics of three main metabolic groups of planktonic bacteria involved in the cycling of organic matter (aerobic heterotrophic bacteria, sulphate-reducing bacteria, and nitrate-reducing bacteria), over one tidal cycle in the estuary of the Mondego. The association of various physical, chemical and biological parameters with the composition of the bacterial community was assessed by multivariate analysis in order to identify key factors controlling the composition and tidal dynamics of the bacterial communities in the Mondego estuary. Principal component analysis (PCA) identified the sources of variability for the bacterial communities in the estuary, as being, on one hand, the different dynamics in the two stations under study (Foz and Pranto) and, on the other hand, the flood and ebb tide fluxes, by their effects in the environmental parameters. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001 2001-01-01T00:00:00Z 2023-06-14T11:01:16Z |
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://hdl.handle.net/10400.2/14023 |
url |
http://hdl.handle.net/10400.2/14023 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.source.none.fl_str_mv |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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