Tidal effect on organic primary productivity in a coastal lagoon of Ballenas Channel, Gulf of Californla
Phytoplankton organic primary productivity (POP) and nutrient time series were generated in a coastal lagoon of the Gulf of California from 6 to 12 August 1986 to estimate the influence of Ballenas Channel during spring and neap tides. Ocean water temperature and salinity varied from 26 to 30°C and...
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Iniversidad Autónoma de Baja California
1996
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Bustos-Serrano, H Millán-Nuñez, R Cajal-Medrano, R |
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Bustos-Serrano, H Millán-Nuñez, R Cajal-Medrano, R Tidal effect on organic primary productivity in a coastal lagoon of Ballenas Channel, Gulf of Californla |
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Bustos-Serrano, H Millán-Nuñez, R Cajal-Medrano, R |
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Bustos-Serrano, H |
| title |
Tidal effect on organic primary productivity in a coastal lagoon of Ballenas Channel, Gulf of Californla |
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Tidal effect on organic primary productivity in a coastal lagoon of Ballenas Channel, Gulf of Californla |
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Tidal effect on organic primary productivity in a coastal lagoon of Ballenas Channel, Gulf of Californla |
| title_fullStr |
Tidal effect on organic primary productivity in a coastal lagoon of Ballenas Channel, Gulf of Californla |
| title_full_unstemmed |
Tidal effect on organic primary productivity in a coastal lagoon of Ballenas Channel, Gulf of Californla |
| title_sort |
tidal effect on organic primary productivity in a coastal lagoon of ballenas channel, gulf of californla |
| description |
Phytoplankton organic primary productivity (POP) and nutrient time series were generated in a coastal lagoon of the Gulf of California from 6 to 12 August 1986 to estimate the influence of Ballenas Channel during spring and neap tides. Ocean water temperature and salinity varied from 26 to 30°C and from 35.54 to 35.63%0, respectively. Oxygen was unsaturated at 85% in more than 70% of the data collected. Values of supersaturated oxygen were obtained during daylight hours only, which increased during neap tides due to the conditioning of the phytoplankton, resulting in greater photosynthesis. It can be inferred from the marked unsaturation that this is an area of high oxygen consumption and CO2 production. The nutrients (nitrate, phosphate and silicate), chlorophyll a and POP show high values, similar to coastal lagoons of the Pacific coast of Baja California in upwelling conditions. POP maximums were as high as 80 mgC·m–3·h–1 in neap tides. It is deduced from the calculated photosynthetic quotient (PQ) and POP that photosynthesis is supported mainly by nitrates. Based on the 14C method, the assimilation ratio varied from 10 to 25 mgC·mgCha–1·h–1. These values are close to the theoretical maximums reported; however, the assimilation ratio using the oxygen method and PQ = 1.25 varied from 1.6 to 35.6 mgC·mgCha–1·h–1 and, with the calculated PQ, it varied from 1.0 to 7.2 mgC·mgCha–1·h–1. It is also deduced that this coastal lagoon is greatly influenced by the nutrient concentrations (mainly nitrate and silicate) from Ballenas Channel during spring tides. There is also an important increment of POP during neap tides. |
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Iniversidad Autónoma de Baja California |
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1996 |
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https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/851 |
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1715724019275137024 |
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oai:cienciasmarinas.com.mx:article-8512019-06-06T00:20:57Z Tidal effect on organic primary productivity in a coastal lagoon of Ballenas Channel, Gulf of Californla Efecto de la marea en la productividad orgánica primaria en una laguna costera del Canal de Ballenas, Golfo de California Bustos-Serrano, H Millán-Nuñez, R Cajal-Medrano, R photosynthetic quotient nutrients advection organic primary productivity cociente fotosintético nutrients advección productividad orgánica primaria Phytoplankton organic primary productivity (POP) and nutrient time series were generated in a coastal lagoon of the Gulf of California from 6 to 12 August 1986 to estimate the influence of Ballenas Channel during spring and neap tides. Ocean water temperature and salinity varied from 26 to 30°C and from 35.54 to 35.63%0, respectively. Oxygen was unsaturated at 85% in more than 70% of the data collected. Values of supersaturated oxygen were obtained during daylight hours only, which increased during neap tides due to the conditioning of the phytoplankton, resulting in greater photosynthesis. It can be inferred from the marked unsaturation that this is an area of high oxygen consumption and CO2 production. The nutrients (nitrate, phosphate and silicate), chlorophyll a and POP show high values, similar to coastal lagoons of the Pacific coast of Baja California in upwelling conditions. POP maximums were as high as 80 mgC·m–3·h–1 in neap tides. It is deduced from the calculated photosynthetic quotient (PQ) and POP that photosynthesis is supported mainly by nitrates. Based on the 14C method, the assimilation ratio varied from 10 to 25 mgC·mgCha–1·h–1. These values are close to the theoretical maximums reported; however, the assimilation ratio using the oxygen method and PQ = 1.25 varied from 1.6 to 35.6 mgC·mgCha–1·h–1 and, with the calculated PQ, it varied from 1.0 to 7.2 mgC·mgCha–1·h–1. It is also deduced that this coastal lagoon is greatly influenced by the nutrient concentrations (mainly nitrate and silicate) from Ballenas Channel during spring tides. There is also an important increment of POP during neap tides. Se realizó un muestreo del 6 al 12 de agosto de 1986 que generó series de tiempo de productividad orgánica primaria (POP) del fitoplancton y nutrientes en una laguna costera del Golfo de California, para estimar la influencia del Canal de Ballenas durante un periodo de mareas vivas y muertas. La temperatura del agua vario entre 26 y 30°C. La salinidad tuvo una variabilidad entre 35.54 y 35.63%. El oxígeno estuvo, por lo general, insaturado al 85%, teniendo valores de sobresaturación solo en horas lumínicas, con una tendencia a aumentar sus valores en marea muerta debido al acondicionamiento del fitoplancton al ambiente, dando una mayor fotosíntesis. La marcada insaturación hace suponer que se trata de una zona de alto consumo de oxígeno y producción de COZ. Los nutrientes (nitratos, fosfatos y silicatos), la clorofila a y la POP mostraron valores altos, similares a lagunas costeras del Océano Pacífico de Baja California en condiciones de surgencia. Los valores máximos de POP alcanzaron hasta 80 mgC·m–3·h–1 y se presentaron en mareas muertas. Con base en los resultados de POP y el cociente fotosintético (PQ) calculado, se deduce que la fotosíntesis se sostiene principalmente de la concentración de nitratos. La razón de asimilación varió de 10 a 25 mgC·mgCha–1·h–1 evaluada con el método de 14C, siendo estos valores cercanos al máximo teórico reportado; sin embargo, con el método de oxígeno utilizando un PQ = 1.25 varió de 1.6 a 35.6 mgC·mgCha–1·h–1 y con el PQ calculado varió de 1.0 a 7.2 mgC·mgCha–1·h–1. De lo anterior, se deduce que esta laguna costera recibe una influencia notoria en la variación de la concentraci6n de nutrientes del Canal de Ballenas, principalmente nitratos y silicatos, durante los periodos de mareas vivas. Además, se observa un incremento de POP durante mareas muertas. Iniversidad Autónoma de Baja California 1996-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/851 10.7773/cm.v22i2.851 Ciencias Marinas; Vol. 22 No. 2 (1996); 215-233 Ciencias Marinas; Vol. 22 Núm. 2 (1996); 215-233 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/851/773 |
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