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Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)

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Summary:This work reports a one year survey (October 2008 to October 2009) where limnology and plankton data from Barrinha lagoon (Mira-Portugal - 40° 27′ 22″ N, 8° 48′ 7″ W) were analyzed. This lagoon shows peculiar geochemical features being one of the few places in Portugal where the freshwater bivalve Anodonta cygnea can be found. This study consisted on monthly collections of water samples, with identification and quantification of the planktonic communities found in the water. Physical-chemical parameters of the water were also analyzed (temperature, dissolved oxygen, conductivity, pH, nitrites, nitrates, ammonia) as well as organic and inorganic particles and bacteria in the water. The importance of plankton and of phytoplankton in particular is unquestionable; it is the base of the food chain, source of oxygen and can also be used as bio-indicator of water quality. A total of 75 taxa of plankton were identified in the water samples, being 71 of phytoplankton and 4 of zooplankton. The most abundant taxon was Chlorophyceae with 30 taxa (abundances vary from 25% to 75%), then by Bacillariophyceae with 20 taxa (abundances vary from 10% to 75%), followed by the Cryptophyceae represented dominantly by only one genus the Crypotmonas (abundances vary from 10% to 35%) and Cyanophyceae 10 taxa (which reach up a maximum of 7.5% of total abundances of phytoplankton). Among the zooplankton, that was always very scarce, the Protozoa were the main group found. In term of physical-chemical parameters of the water the data were quite uniform except in the end of summer, in this period the lagoon begins to show some signs of eutrophication: decay of nutrients concentration, organic and inorganic particles, followed by oxygen depletion, which favours a simple algae to growth (Cryptomonas) in detriment of all other species of plankton, that in this period reach its minimums. Escherischia coli, Enterococci and total aerobic mesophilic (TAM) microorganisms were indentified and quantified in the water, their abundances change throughout the year, their occurrence are human correlated and they give a good scenario about the water quality in the habitat.
Main Authors:Hinzmann, Mariana
Other Authors:Varandas, Simone; Teixeira, Amílcar; Lopes-Lima, Manuel; Machado, Jorge
Year:2010
Country:Portugal
Document type:conference output
Access type:open access
Associated institution:Instituto Politécnico de Bragança
Language:English
Origin:Biblioteca Digital do IPB
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author Hinzmann, Mariana
author2 Varandas, Simone
Teixeira, Amílcar
Lopes-Lima, Manuel
Machado, Jorge
author2_role author
author
author
author
author_facet Hinzmann, Mariana
Varandas, Simone
Teixeira, Amílcar
Lopes-Lima, Manuel
Machado, Jorge
author_role author
contributor_name_str_mv Biblioteca Digital do IPB
country_str PT
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datacite.contributors.contributor.contributorName.fl_str_mv Biblioteca Digital do IPB
datacite.creators.creator.creatorName.fl_str_mv Hinzmann, Mariana
Varandas, Simone
Teixeira, Amílcar
Lopes-Lima, Manuel
Machado, Jorge
datacite.date.Accepted.fl_str_mv 2010-01-01T00:00:00Z
datacite.date.available.fl_str_mv 2011-06-06T16:11:10Z
datacite.date.embargoed.fl_str_mv 2011-06-06T16:11:10Z
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datacite.titles.title.fl_str_mv Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)
dc.contributor.none.fl_str_mv Biblioteca Digital do IPB
dc.creator.none.fl_str_mv Hinzmann, Mariana
Varandas, Simone
Teixeira, Amílcar
Lopes-Lima, Manuel
Machado, Jorge
dc.date.Accepted.fl_str_mv 2010-01-01T00:00:00Z
dc.date.available.fl_str_mv 2011-06-06T16:11:10Z
dc.date.embargoed.fl_str_mv 2011-06-06T16:11:10Z
dc.format.none.fl_str_mv application/pdf
dc.identifier.none.fl_str_mv http://hdl.handle.net/10198/5005
dc.language.none.fl_str_mv eng
dc.publisher.none.fl_str_mv Universidade dos Açores
dc.rights.none.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.title.fl_str_mv Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)
dc.type.none.fl_str_mv http://purl.org/coar/resource_type/c_c94f
description This work reports a one year survey (October 2008 to October 2009) where limnology and plankton data from Barrinha lagoon (Mira-Portugal - 40° 27′ 22″ N, 8° 48′ 7″ W) were analyzed. This lagoon shows peculiar geochemical features being one of the few places in Portugal where the freshwater bivalve Anodonta cygnea can be found. This study consisted on monthly collections of water samples, with identification and quantification of the planktonic communities found in the water. Physical-chemical parameters of the water were also analyzed (temperature, dissolved oxygen, conductivity, pH, nitrites, nitrates, ammonia) as well as organic and inorganic particles and bacteria in the water. The importance of plankton and of phytoplankton in particular is unquestionable; it is the base of the food chain, source of oxygen and can also be used as bio-indicator of water quality. A total of 75 taxa of plankton were identified in the water samples, being 71 of phytoplankton and 4 of zooplankton. The most abundant taxon was Chlorophyceae with 30 taxa (abundances vary from 25% to 75%), then by Bacillariophyceae with 20 taxa (abundances vary from 10% to 75%), followed by the Cryptophyceae represented dominantly by only one genus the Crypotmonas (abundances vary from 10% to 35%) and Cyanophyceae 10 taxa (which reach up a maximum of 7.5% of total abundances of phytoplankton). Among the zooplankton, that was always very scarce, the Protozoa were the main group found. In term of physical-chemical parameters of the water the data were quite uniform except in the end of summer, in this period the lagoon begins to show some signs of eutrophication: decay of nutrients concentration, organic and inorganic particles, followed by oxygen depletion, which favours a simple algae to growth (Cryptomonas) in detriment of all other species of plankton, that in this period reach its minimums. Escherischia coli, Enterococci and total aerobic mesophilic (TAM) microorganisms were indentified and quantified in the water, their abundances change throughout the year, their occurrence are human correlated and they give a good scenario about the water quality in the habitat.
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person_str_mv Hinzmann, Mariana
Varandas, Simone
Teixeira, Amílcar
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Lopes-Lima, Manuel
Machado, Jorge
publishDate 2010
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spelling engUniversidade dos AçoresporThis work reports a one year survey (October 2008 to October 2009) where limnology and plankton data from Barrinha lagoon (Mira-Portugal - 40° 27′ 22″ N, 8° 48′ 7″ W) were analyzed. This lagoon shows peculiar geochemical features being one of the few places in Portugal where the freshwater bivalve Anodonta cygnea can be found. This study consisted on monthly collections of water samples, with identification and quantification of the planktonic communities found in the water. Physical-chemical parameters of the water were also analyzed (temperature, dissolved oxygen, conductivity, pH, nitrites, nitrates, ammonia) as well as organic and inorganic particles and bacteria in the water. The importance of plankton and of phytoplankton in particular is unquestionable; it is the base of the food chain, source of oxygen and can also be used as bio-indicator of water quality. A total of 75 taxa of plankton were identified in the water samples, being 71 of phytoplankton and 4 of zooplankton. The most abundant taxon was Chlorophyceae with 30 taxa (abundances vary from 25% to 75%), then by Bacillariophyceae with 20 taxa (abundances vary from 10% to 75%), followed by the Cryptophyceae represented dominantly by only one genus the Crypotmonas (abundances vary from 10% to 35%) and Cyanophyceae 10 taxa (which reach up a maximum of 7.5% of total abundances of phytoplankton). Among the zooplankton, that was always very scarce, the Protozoa were the main group found. In term of physical-chemical parameters of the water the data were quite uniform except in the end of summer, in this period the lagoon begins to show some signs of eutrophication: decay of nutrients concentration, organic and inorganic particles, followed by oxygen depletion, which favours a simple algae to growth (Cryptomonas) in detriment of all other species of plankton, that in this period reach its minimums. Escherischia coli, Enterococci and total aerobic mesophilic (TAM) microorganisms were indentified and quantified in the water, their abundances change throughout the year, their occurrence are human correlated and they give a good scenario about the water quality in the habitat.application/pdfporPhytoplankton survey of “Barrinha”lagoon (Mira – Portugal)Hinzmann, MarianaVarandas, SimonePersonalTeixeira, AmílcarDSpacehttp://dspace.org/items/4f0753fd-4b4f-46f6-8e2f-20c7f835a32aDSpacehttp://dspace.org/items/4f0753fd-4b4f-46f6-8e2f-20c7f835a32aTeixeiraAmilcarCiência IDhttps://www.ciencia-id.pt9510-3CF3-0393ORCIDhttp://orcid.org0000-0001-5336-1174Scopus Author IDhttps://www.scopus.com7202385393Lopes-Lima, ManuelMachado, JorgeHostingInstitutionOrganizationalBiblioteca Digital do IPBe-mailmailto:dspace@ipb.ptdspace@ipb.pt2011-06-06T16:11:10Z20102010-01-01T00:00:00ZHandlehttp://hdl.handle.net/10198/5005http://purl.org/coar/access_right/c_abf2open access317519 bytesother research producthttp://purl.org/coar/resource_type/c_c94fconference objecthttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://bibliotecadigital.ipb.pt/bitstreams/ca3d1ca9-085b-4504-8d3e-0885aac7b919/downloadXV Congresso da Associação Ibérica de Limnologia AÇORES 2010Universidade dos Açores, Ponta Delgada
spellingShingle Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)
Hinzmann, Mariana
status SINGLETON
title Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)
title_full Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)
title_fullStr Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)
title_full_unstemmed Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)
title_short Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)
title_sort Phytoplankton survey of “Barrinha”lagoon (Mira – Portugal)
url http://hdl.handle.net/10198/5005
visible 1