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| Format: | Artículo científico |
| Language: | en |
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Universidad Autónoma de Baja California
2001
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| Online Access: | https://www.redalyc.org/articulo.oa?id=48027301 |
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Table of Contents:
- Influence of benthic regeneration on the biogeochemical cycle of CO2 in littoral ecosystems Teodora Ortega Jesús M. Forja T. Angel DelValls Abelardo Gómez Parra Ciencias de la Tierra CO2 cycle CO2 emissions organic carbon littoral ecosystems inorganic carbon benthic fluxes The benthic fluxes of inorganic carbon were measured in the Bay of Cádiz, located in the SW of theIberian Peninsula (Southern Europe). The values measured ranged between 74 and 224 mmol m2 d1,which are higher than most reported fluxes. They were linearly correlated with the organic carbon contentin surface sediments. For the Bay of Cádiz, a carbon budget is proposed. It was determined that 53% ofthe benthic inorganic carbon production is used by the phytoplankton of the area, and 43% is exported bytides to other littoral areas. The rest of the benthic production, together with direct emission of CO2 fromintertidal sediments to the atmosphere, yielded a maximum net flux of 5.6 · 108 mol C y1. If extrapolatedto coastal areas globally, these values are particularly significant. Taking 44 mmol m2 d1 as an averagevalue for benthic fluxes of dissolved inorganic carbon, it is estimated that the benthic CO2 production bycoastal ecosystems is about 4.2 · 1014 mol y1, similar to the estimated annual CO2 emissions to theatmosphere from the burning of fossil fuels 2001 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48027301 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.3 Vol.27