On the variation of alkalinity during phytoplankton photosynthesis

The alkalinity of the organic constituents of marine phytoplankton and their participation in the total alkalinity (TA) change of seawater during photosynthesis are carefully assessed. Quantification of the contribution of phytoplankton chlorophyll, proteins and phosphorus compounds to the hydrogen...

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Autores principales:	Fraga, F, Álvarez-Salgado, XA
Formato:	info:eu-repo/semantics/article
Lenguaje:	eng
Publicado:	Iniversidad Autónoma de Baja California 2005
Materias:	total alcalinity carbon cycling phytoplankton primary production mineralization alcalinidad total ciclo del carbono fitoplancton producción primaria mineralización
Acceso en línea:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/26
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spelling	repositorioinstitucional-20.500.12930-73072023-05-09T14:30:33Z On the variation of alkalinity during phytoplankton photosynthesis Variación de la alcalinidad durante la fotosíntesis del fitoplancton marino Fraga, F Álvarez-Salgado, XA total alcalinity carbon cycling phytoplankton primary production mineralization alcalinidad total ciclo del carbono fitoplancton producción primaria mineralización The alkalinity of the organic constituents of marine phytoplankton and their participation in the total alkalinity (TA) change of seawater during photosynthesis are carefully assessed. Quantification of the contribution of phytoplankton chlorophyll, proteins and phosphorus compounds to the hydrogen ion balance of seawater in terms of total inorganic nitrogen (∆[NT] = ∆NH4 +] + ∆[N2] + ∆[NO2–] + ∆[NO3–]) and total inorganic phosphorus (∆[PT]) changes during photosynthesis yielded that the organic components of marine phytoplankton are alkaline by –0.06 ×  ∆[NT] – 0.49 × ∆[PT], and that the potential total alkalinity (TAP) during photosynthesis is TAP = TA – [NH4– + 0.93 × [NO2–] + [NO3–] + 0.08 × [NT] + 0.23 × [PT] for unfiltered seawater samples and TAP = TA – [NH4–] + 0.93 × [NO2–] + [NO3–] + 0.02 × [NT] + 0.26 × [PT] for filtered seawater samples. These equations correct the traditionally used expression TAP = TA + [NO3–]. The TAP anomalies are produced, in order of increasing importance, by N2 fixation, DMSP production and CaCO3 fixation. En este artículo se estima la alcalinidad de los compuestos orgánicos producidos por el fitoplancton marino y su contribución al cambio de alcalinidad total (TA) del agua de mar durante la fotosíntesis. Tras cuantificar la contribución de los pigmentos fotosintéticos, las proteínas y los compuestos de fósforo al balance de H+ del agua de mar referida a las variaciones de nitrógeno inorgánico (∆[NT] = ∆NH4 +] + ∆[N2] + ∆[NO2–] + ∆[NO3–]) y fósforo inorgánico (∆[PT]]) totales durante la fotosíntesis, se obtiene que los constituyentes orgánicos del fitoplancton marino tienen una alcalinidad de–0.06 ×  ∆[NT] – 0.49 × ∆[PT], y que la alcalinidad potencial (TAP) durante la fotosíntesis es TAP = TA – [NH4– + 0.93 × [NO2–] + [NO3–] + 0.08 × [NT] + 0.23 × [PT] para muestras no filtradas y TAP = TA – [NH4–] + 0.93 × [NO2–] + [NO3–] + 0.02 × [NT] + 0.26 × [PT] para muestras filtradas. Estas expresiones corrigen la ecuación tradicional de TAP = TA + [NO3–]. Procesos tales como la fijación de N2, la producción de DMSP y, sobre todo, la síntesis de CaCO3, producen desviaciones crecientes en el comportamiento conservativo de la TAP. 2005-03-06 2021-06-03T03:54:50Z 2021-06-03T03:54:50Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/26 10.7773/cm.v31i4.26 https://hdl.handle.net/20.500.12930/7307 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/26/11 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 31 No. 4 (2005); 627-639 Ciencias Marinas; Vol. 31 Núm. 4 (2005); 627-639 2395-9053 0185-3880
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	total alcalinity carbon cycling phytoplankton primary production mineralization alcalinidad total ciclo del carbono fitoplancton producción primaria mineralización
spellingShingle	total alcalinity carbon cycling phytoplankton primary production mineralization alcalinidad total ciclo del carbono fitoplancton producción primaria mineralización Fraga, F Álvarez-Salgado, XA On the variation of alkalinity during phytoplankton photosynthesis
description	The alkalinity of the organic constituents of marine phytoplankton and their participation in the total alkalinity (TA) change of seawater during photosynthesis are carefully assessed. Quantification of the contribution of phytoplankton chlorophyll, proteins and phosphorus compounds to the hydrogen ion balance of seawater in terms of total inorganic nitrogen (∆[NT] = ∆NH4 +] + ∆[N2] + ∆[NO2–] + ∆[NO3–]) and total inorganic phosphorus (∆[PT]) changes during photosynthesis yielded that the organic components of marine phytoplankton are alkaline by –0.06 ×  ∆[NT] – 0.49 × ∆[PT], and that the potential total alkalinity (TAP) during photosynthesis is TAP = TA – [NH4– + 0.93 × [NO2–] + [NO3–] + 0.08 × [NT] + 0.23 × [PT] for unfiltered seawater samples and TAP = TA – [NH4–] + 0.93 × [NO2–] + [NO3–] + 0.02 × [NT] + 0.26 × [PT] for filtered seawater samples. These equations correct the traditionally used expression TAP = TA + [NO3–]. The TAP anomalies are produced, in order of increasing importance, by N2 fixation, DMSP production and CaCO3 fixation.
format	info:eu-repo/semantics/article
author	Fraga, F Álvarez-Salgado, XA
author_facet	Fraga, F Álvarez-Salgado, XA
author_sort	Fraga, F
title	On the variation of alkalinity during phytoplankton photosynthesis
title_short	On the variation of alkalinity during phytoplankton photosynthesis
title_full	On the variation of alkalinity during phytoplankton photosynthesis
title_fullStr	On the variation of alkalinity during phytoplankton photosynthesis
title_full_unstemmed	On the variation of alkalinity during phytoplankton photosynthesis
title_sort	on the variation of alkalinity during phytoplankton photosynthesis
publisher	Iniversidad Autónoma de Baja California
publishDate	2005
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/26
_version_	1792609210735788032

On the variation of alkalinity during phytoplankton photosynthesis

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