Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)

Detalhes bibliográficos
Autor(a) principal: Almeida, M. A.
Data de Publicação: 1992
Outros Autores: Alcantara, F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/13172
Resumo: The frequency of attached bacteria, as percentage of total bacteria, in estuarine water of the Ria de Aveiro was determined over a seasonal range of temperature, seston, BOD, salinity and water depth. The frequency was inversely related to temperature only in the marine zone of the lagoon. No other associations could be established with environmental factors The broad spring-summer peak of total bacteria was not apparent in attached bacteria which showed an erratic temporal profile with an average frequency of 9 % (range 1 to 49 %] of total planktonic bacteria The bacterial coverage per unit area of particle surface was densest in small particles The density of coverage decreased sharply to values corresponding to 22,5 and 2 % in particles > 3 to 10, > l0 to 40 and > 40 to 140 pm in diameter respecitvely compared to the density of coverage of the > 1 to 3 pm size-class Colonized seston and sediment particles exhibited similar bacterial numbers per particle of each size-class and did not show tidal spatial 01 seasonal patterns of variation it is suggested that bacteria only seldom attach to particles in the water column of this lagoon and that resuspension of bottom sediments is the main factor governing the frequency of colonized particles in surface water.
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spelling Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)The frequency of attached bacteria, as percentage of total bacteria, in estuarine water of the Ria de Aveiro was determined over a seasonal range of temperature, seston, BOD, salinity and water depth. The frequency was inversely related to temperature only in the marine zone of the lagoon. No other associations could be established with environmental factors The broad spring-summer peak of total bacteria was not apparent in attached bacteria which showed an erratic temporal profile with an average frequency of 9 % (range 1 to 49 %] of total planktonic bacteria The bacterial coverage per unit area of particle surface was densest in small particles The density of coverage decreased sharply to values corresponding to 22,5 and 2 % in particles > 3 to 10, > l0 to 40 and > 40 to 140 pm in diameter respecitvely compared to the density of coverage of the > 1 to 3 pm size-class Colonized seston and sediment particles exhibited similar bacterial numbers per particle of each size-class and did not show tidal spatial 01 seasonal patterns of variation it is suggested that bacteria only seldom attach to particles in the water column of this lagoon and that resuspension of bottom sediments is the main factor governing the frequency of colonized particles in surface water.Inter Research2015-01-19T14:48:59Z1992-01-01T00:00:00Z1992info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/13172eng0171-863010.3354/meps089165Almeida, M. A.Alcantara, F.info: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:RCAAP2024-02-22T11:19:08Zoai:ria.ua.pt:10773/13172Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:47:20.605391Repositório 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 Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)
title Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)
spellingShingle Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)
Almeida, M. A.
title_short Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)
title_full Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)
title_fullStr Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)
title_full_unstemmed Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)
title_sort Bacterial colonization of seston particles in brackish waters (Ria de Aveiro, Portugal)
author Almeida, M. A.
author_facet Almeida, M. A.
Alcantara, F.
author_role author
author2 Alcantara, F.
author2_role author
dc.contributor.author.fl_str_mv Almeida, M. A.
Alcantara, F.
description The frequency of attached bacteria, as percentage of total bacteria, in estuarine water of the Ria de Aveiro was determined over a seasonal range of temperature, seston, BOD, salinity and water depth. The frequency was inversely related to temperature only in the marine zone of the lagoon. No other associations could be established with environmental factors The broad spring-summer peak of total bacteria was not apparent in attached bacteria which showed an erratic temporal profile with an average frequency of 9 % (range 1 to 49 %] of total planktonic bacteria The bacterial coverage per unit area of particle surface was densest in small particles The density of coverage decreased sharply to values corresponding to 22,5 and 2 % in particles > 3 to 10, > l0 to 40 and > 40 to 140 pm in diameter respecitvely compared to the density of coverage of the > 1 to 3 pm size-class Colonized seston and sediment particles exhibited similar bacterial numbers per particle of each size-class and did not show tidal spatial 01 seasonal patterns of variation it is suggested that bacteria only seldom attach to particles in the water column of this lagoon and that resuspension of bottom sediments is the main factor governing the frequency of colonized particles in surface water.
publishDate 1992
dc.date.none.fl_str_mv 1992-01-01T00:00:00Z
1992
2015-01-19T14:48:59Z
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10.3354/meps089165
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