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 show how...

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Main Authors: E García-Luque, JM Forja, A Gómez-Parra
Format: Article
Language:English
Published: Universidad Autónoma de Baja California 2005-03-01
Series:Ciencias Marinas
Subjects:
Online Access:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/101
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author E García-Luque
JM Forja
A Gómez-Parra
author_facet E García-Luque
JM Forja
A Gómez-Parra
author_sort E García-Luque
collection DOAJ
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.
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spelling doaj.art-182bc9a80a3048bba1c223e3f312a6752024-03-03T18:32:38ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532005-03-01311B10.7773/cm.v31i12.101Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuariesE García-Luque0JM Forja1A Gómez-Parra2Universidad de CádizUniversidad de CádizUniversidad de Cádiz  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. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/101CO2water-atmosphere fluxessimulationestuaries
spellingShingle E García-Luque
JM Forja
A Gómez-Parra
Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries
Ciencias Marinas
CO2
water-atmosphere fluxes
simulation
estuaries
title 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_short Quantification of laboratory-simulated water-atmosphere CO2 fluxes in estuaries
title_sort quantification of laboratory simulated water atmosphere co2 fluxes in estuaries
topic CO2
water-atmosphere fluxes
simulation
estuaries
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/101
work_keys_str_mv AT egarcialuque quantificationoflaboratorysimulatedwateratmosphereco2fluxesinestuaries
AT jmforja quantificationoflaboratorysimulatedwateratmosphereco2fluxesinestuaries
AT agomezparra quantificationoflaboratorysimulatedwateratmosphereco2fluxesinestuaries