Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries

Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries

 Laboratory simulation of the processes that affect chemical species as they pass through estuaries is a useful tool for the study of these littoral systems. In this work, laboratory generation of the salinity gradients of several estuaries was performed using the steady state approach. We...

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Autores principales: García-Luque, E, Forja, JM, Gómez-Parra, A
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Foilsithe: Iniversidad Autónoma de Baja California 2005
Rochtain Ar Líne:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/101
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spelling oai:cienciasmarinas.com.mx:article-1012019-04-25T00:44:25Z Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries Cuantificación de flujos de CO2 agua-atmósfera en estuarios mediante simulación en laboratorio García-Luque, E Forja, JM Gómez-Parra, A CO2 water-atmosphere fluxes simulation estuaries CO2 flujos agua-atmósfera simulacion estuarios  Laboratory simulation of the processes that affect chemical species as they pass through estuaries is a useful tool for the study of these littoral systems. In this work, laboratory generation of the salinity gradients of several estuaries was performed using the steady state approach. We show how longitudinal salinity gradients can be generated in the laboratory, in order to characterize water-atmosphere CO2 flux variations along different salinity gradients. Many natural estuaries, exposed to anthropogenic influence, show oversaturation of CO2 relative to the atmosphere, with water pCO2 values between 500 and 9500 µatm. In all the experiments performed, pCO2 values higher than the mean atmospheric pCO2 were obtained. On the other hand, all the experimentally quantified water-atmosphere CO2 fluxes decrease exponentially with the increase in salinity. This same behaviour has been reported for several European estuaries by different authors. La simulación en laboratorio de los procesos que afectan a las especies químicas en su tránsito por los estuarios es una herramienta muy útil en el estudio de estos sistemas litorales. En este trabajo, se generaron en laboratorio los gradientes de salinidad propios de varios estuarios, utilizando la aproximación del estado estacionario. Así, se muestra la forma en que puede generarse en laboratorio un gradiente longitudinal de salinidad concreto en régimen estacionario y cómo gracias a ello se puede caracterizar la variación del flujo de CO2 agua-atmósfera a lo largo de dicho gradiente. Numerosos estuarios reales, sometidos a actuaciones antropogénicas, presentan una cierta sobresaturación de CO2 respecto a la atmósfera, con valores de pCO2 en agua entre 500 y 9500 µatm. En todos los experimentos realizados también se han obtenido valores de pCO2 superiores a la pCO2 atmosférica mundial media. Por otro lado, todos los flujos de CO2 agua-atmósfera cuantificados en laboratorio descienden de forma exponencial con el incremento de salinidad. Este mismo comportamiento ha sido descrito en diferentes estuarios reales europeos por distintos autores. Iniversidad Autónoma de Baja California 2005-03-06 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/101 10.7773/cm.v31i12.101 Ciencias Marinas; Vol. 31 No. 1B (2005); 125-133 Ciencias Marinas; Vol. 31 Núm. 1B (2005); 125-133 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/101/81
institution Ciencias Marinas
collection OJS
language eng
format Online
author García-Luque, E
Forja, JM
Gómez-Parra, A
spellingShingle García-Luque, E
Forja, JM
Gómez-Parra, A
Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries
author_facet García-Luque, E
Forja, JM
Gómez-Parra, A
author_sort García-Luque, E
title Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries
title_short Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries
title_full Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries
title_fullStr Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries
title_full_unstemmed Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries
title_sort quantification of laboratory-simulated water-atmosphere co2 fluxes in estuaries
description  Laboratory simulation of the processes that affect chemical species as they pass through estuaries is a useful tool for the study of these littoral systems. In this work, laboratory generation of the salinity gradients of several estuaries was performed using the steady state approach. We show how longitudinal salinity gradients can be generated in the laboratory, in order to characterize water-atmosphere CO2 flux variations along different salinity gradients. Many natural estuaries, exposed to anthropogenic influence, show oversaturation of CO2 relative to the atmosphere, with water pCO2 values between 500 and 9500 µatm. In all the experiments performed, pCO2 values higher than the mean atmospheric pCO2 were obtained. On the other hand, all the experimentally quantified water-atmosphere CO2 fluxes decrease exponentially with the increase in salinity. This same behaviour has been reported for several European estuaries by different authors.
publisher Iniversidad Autónoma de Baja California
publishDate 2005
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/101
_version_ 1715723921836212224

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