Spatio-temporal variability of nutrients and seston in the coastal lagoon La Cruz, Sonora
Monthly (May 1987 to July 1988) samples were taken in triplicate of surface water at eight stations in the coastal lagoon La Cruz, Sonora, in order to determine the concentrations of nitrates, nitrites, phosphates and seston. In addition, surface salinity and temperature work measured at these stati...
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oai:cienciasmarinas.com.mx:article-7952013-08-19T03:29:28Z Spatio-temporal variability of nutrients and seston in the coastal lagoon La Cruz, Sonora Variabilidad espacio-temporal de nutrientes y seston en la laguna costera La Cruz, Sonora Castro-Longoria, R Grijalva-Chon, JM Monthly (May 1987 to July 1988) samples were taken in triplicate of surface water at eight stations in the coastal lagoon La Cruz, Sonora, in order to determine the concentrations of nitrates, nitrites, phosphates and seston. In addition, surface salinity and temperature work measured at these stations. The temperature showed a marked seasonal trend with values between 32ºC (September) and 16ºC (January). The monthly salinity fluctuated between values of 3.5 and 40‰ The mean monthly concentration of phosphates had values of 0.21 to 3.6 µM. The nitrates had values of 0.42 to 3.8 PM, whereas the nitrites had concentrations from undetectable values to 0.38 µM. The total, inorganic and organic seston had minimum values of 10.2, 7.0 and 3.0 g/m3 and maximum values of 62.0, 35.2 and 6.9 g/n3, respectively. Temporally, the maxima and minima of the variables only partially coincided. The spatial distribution of the concentrations of each variable showed homogeneity on several occasions and, during the months when this did not occur, there was no defined pattern. The strong tidal exchange could be responsible for the high variability of the system. Se tomaron muestras mensuales (mayo de 1987 a julio de 1988) por triplicado de agua superficial en ocho estaciones de la laguna costera La Cruz, Sonora, para determinar las concentraciones de nitratos, nitritos, fosfatos y seston. Además, se midió la temperatura y salinidad superficial en esas estaciones. La temperatura mostró una clara tendencia estacional con valores entre 32ºC (septiembre) y 16ºC (enero). La salinidad mensual fue muy fluctuante con valores entre 35 y 40‰. La concentración mensual promedio de fosfatos registró valores de 0.21 a 3.6 µM. Los nitratos registraron valores de 0.42 a 3.8 µM, mientras que los nitritos mostraron desde valores indetectables hasta de 0.38 µM. El seston total, inorgánico y orgánico presentaron niveles mínimos dc 10.2, 7.0 y 3.0 g/m3 y máximos de 62.0, 35.2 y 6.9 g/m3, respectivamente. Temporalmente, los máximos y mínimos de las variables coincidieron solo parcialmente. La distribución espacial de las concentraciones dé cada variable mostraron homogeneidad en varias ocasiones y en los meses en que esto no se presentó no hubo un patrón definido. El fuerte intercambio mareal puede ser el responsable de la alta variabilidad en el sistema. Iniversidad Autónoma de Baja California 2021-02-22 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/795 10.7773/cm.v17i2.795 Ciencias Marinas; Vol. 17 No. 2 (1991); 83-97 Ciencias Marinas; Vol. 17 Núm. 2 (1991); 83-97 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/795/420420539 Copyright (c) 2021 Ciencias Marinas |
institution |
Ciencias Marinas |
collection |
OJS |
language |
eng |
format |
Online |
author |
Castro-Longoria, R Grijalva-Chon, JM |
spellingShingle |
Castro-Longoria, R Grijalva-Chon, JM Spatio-temporal variability of nutrients and seston in the coastal lagoon La Cruz, Sonora |
author_facet |
Castro-Longoria, R Grijalva-Chon, JM |
author_sort |
Castro-Longoria, R |
title |
Spatio-temporal variability of nutrients and seston in the coastal lagoon La Cruz, Sonora |
title_short |
Spatio-temporal variability of nutrients and seston in the coastal lagoon La Cruz, Sonora |
title_full |
Spatio-temporal variability of nutrients and seston in the coastal lagoon La Cruz, Sonora |
title_fullStr |
Spatio-temporal variability of nutrients and seston in the coastal lagoon La Cruz, Sonora |
title_full_unstemmed |
Spatio-temporal variability of nutrients and seston in the coastal lagoon La Cruz, Sonora |
title_sort |
spatio-temporal variability of nutrients and seston in the coastal lagoon la cruz, sonora |
description |
Monthly (May 1987 to July 1988) samples were taken in triplicate of surface water at eight stations in the coastal lagoon La Cruz, Sonora, in order to determine the concentrations of nitrates, nitrites, phosphates and seston. In addition, surface salinity and temperature work measured at these stations. The temperature showed a marked seasonal trend with values between 32ºC (September) and 16ºC (January). The monthly salinity fluctuated between values of 3.5 and 40‰ The mean monthly concentration of phosphates had values of 0.21 to 3.6 µM. The nitrates had values of 0.42 to 3.8 PM, whereas the nitrites had concentrations from undetectable values to 0.38 µM. The total, inorganic and organic seston had minimum values of 10.2, 7.0 and 3.0 g/m3 and maximum values of 62.0, 35.2 and 6.9 g/n3, respectively. Temporally, the maxima and minima of the variables only partially coincided. The spatial distribution of the concentrations of each variable showed homogeneity on several occasions and, during the months when this did not occur, there was no defined pattern. The strong tidal exchange could be responsible for the high variability of the system. |
publisher |
Iniversidad Autónoma de Baja California |
publishDate |
2021 |
url |
https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/795 |
_version_ |
1715724012510773248 |