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Phytoplankton Composition in Shallow Water Ecosystems: Influence of Environmental Gradients and Nutrient Availability

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Τίτλος: Phytoplankton Composition in Shallow Water Ecosystems: Influence of Environmental Gradients and Nutrient Availability
Συγγραφείς: López Flores, Rocío, Romaní i Cornet, Anna M., Quintana Pou, Xavier
Πηγή: © International Workshop on Compositional Data Analysis (4th: 2011: Sant Feliu de GuÍxols, Girona). CODAWORK 2011: International Workshop on Compositional Data Analysis, hold on May 9-13rd. 2011, Sant Feliu de Guíxols, Girona ; Llibres / Capítols de LLibre (D-CCAA)
Στοιχεία εκδότη: Universitat Politècnica de Catalunya. Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE)
Έτος έκδοσης: 2011
Συλλογή: Universitat de Girona: DUGiDocs (UdG Digital Repository)
Θεματικοί όροι: Estadística matemàtica -- Congressos, Mathematical statistics -- Congresses, Anàlisi multivariable -- Congressos, Ecologia aquàtica -- Mètodes estadístics -- Congressos, Aquatic ecology -- Statistical methods -- Congresses
Περιγραφή: Environmental gradients caused by hydrological changes, whether natural or maninduced, affect the planktonic taxonomic and functional composition in shallow water ecosystems. In this sense, our aim was to find out the main variables or variable ratios that are the driving forces of the major phytoplankton taxonomic groups in Mediterranean coastal lagoons. For this purpose, 11 waterbodies were choosen, 6 of them in Empordà wetlands and 5 in the Doñana National Park, looking for representative conditions along a gradient of salinity and nutrient content. Two surveys were conducted in each waterbody (January and May 2007), after that the phytoplankton composition (chemotaxonomic composition) and also several physical and chemical environmental variables were analyzed. Two methodological approaches were used and compared: a first approach with a log (x+1) variable transformation and a second one where variables were transformed using the compositional data analysis (CoDa) techniques introduced by Aitchison (1986). When the raw data approach and the CoDa approach analysis (RDA) were compared, the results obtained were similar with regard to explained variance and also interpretation. The CoDa approach was characterized by the introduction of a new environmental driving factor, the bacterial biomass, whose ratio with the peptidase enzyme activity became significant. In this sense, the CoDa approach contributed to improving the biological interpretation of the phytoplankton distribution based on the raw analysis
Τύπος εγγράφου: book part
Περιγραφή αρχείου: application/pdf
Γλώσσα: English
Relation: info:eu-repo/semantics/altIdentifier/isbn/978-84-87867-76-7; https://hdl.handle.net/10256/13655
Διαθεσιμότητα: https://hdl.handle.net/10256/13655
Rights: Tots els drets reservats ; info:eu-repo/semantics/openAccess
Αριθμός Καταχώρησης: edsbas.4FCB1880
Βάση Δεδομένων: BASE
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  – Url: https://hdl.handle.net/10256/13655#
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  Label: Title
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  Data: Phytoplankton Composition in Shallow Water Ecosystems: Influence of Environmental Gradients and Nutrient Availability
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  Data: <searchLink fieldCode="AR" term="%22López+Flores%2C+Rocío%22">López Flores, Rocío</searchLink><br /><searchLink fieldCode="AR" term="%22Romaní+i+Cornet%2C+Anna+M%2E%22">Romaní i Cornet, Anna M.</searchLink><br /><searchLink fieldCode="AR" term="%22Quintana+Pou%2C+Xavier%22">Quintana Pou, Xavier</searchLink>
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  Data: © International Workshop on Compositional Data Analysis (4th: 2011: Sant Feliu de GuÍxols, Girona). CODAWORK 2011: International Workshop on Compositional Data Analysis, hold on May 9-13rd. 2011, Sant Feliu de Guíxols, Girona ; Llibres / Capítols de LLibre (D-CCAA)
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  Data: Universitat Politècnica de Catalunya. Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE)
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  Data: 2011
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  Label: Description
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  Data: Environmental gradients caused by hydrological changes, whether natural or maninduced, affect the planktonic taxonomic and functional composition in shallow water ecosystems. In this sense, our aim was to find out the main variables or variable ratios that are the driving forces of the major phytoplankton taxonomic groups in Mediterranean coastal lagoons. For this purpose, 11 waterbodies were choosen, 6 of them in Empordà wetlands and 5 in the Doñana National Park, looking for representative conditions along a gradient of salinity and nutrient content. Two surveys were conducted in each waterbody (January and May 2007), after that the phytoplankton composition (chemotaxonomic composition) and also several physical and chemical environmental variables were analyzed. Two methodological approaches were used and compared: a first approach with a log (x+1) variable transformation and a second one where variables were transformed using the compositional data analysis (CoDa) techniques introduced by Aitchison (1986). When the raw data approach and the CoDa approach analysis (RDA) were compared, the results obtained were similar with regard to explained variance and also interpretation. The CoDa approach was characterized by the introduction of a new environmental driving factor, the bacterial biomass, whose ratio with the peptidase enzyme activity became significant. In this sense, the CoDa approach contributed to improving the biological interpretation of the phytoplankton distribution based on the raw analysis
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      – Text: English
    Subjects:
      – SubjectFull: Estadística matemàtica -- Congressos
        Type: general
      – SubjectFull: Mathematical statistics -- Congresses
        Type: general
      – SubjectFull: Anàlisi multivariable -- Congressos
        Type: general
      – SubjectFull: Ecologia aquàtica -- Mètodes estadístics -- Congressos
        Type: general
      – SubjectFull: Aquatic ecology -- Statistical methods -- Congresses
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      – TitleFull: Phytoplankton Composition in Shallow Water Ecosystems: Influence of Environmental Gradients and Nutrient Availability
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            NameFull: Romaní i Cornet, Anna M.
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            – TitleFull: © International Workshop on Compositional Data Analysis (4th: 2011: Sant Feliu de GuÍxols, Girona). CODAWORK 2011: International Workshop on Compositional Data Analysis, hold on May 9-13rd. 2011, Sant Feliu de Guíxols, Girona ; Llibres / Capítols de LLibre (D-CCAA
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