Temporal patterns of carbon dioxide in relation to hydrological conditions and primary production in the northeastern shelf of the Gulf of Cadiz (SW Spain)

2006 ◽  
Vol 53 (11-13) ◽  
pp. 1344-1362 ◽  
Author(s):  
I. Emma Huertas ◽  
Gabriel Navarro ◽  
Susana Rodríguez-Gálvez ◽  
Luis M. Lubián
Keyword(s):  
Carbon Dioxide ◽  
Primary Production ◽  
Temporal Patterns ◽  
Gulf Of Cadiz ◽  
Hydrological Conditions ◽  
Sw Spain ◽  
Gulf Of Cádiz ◽  
Northeastern Shelf

The influence of phytoplankton biomass on the spatial distribution of carbon dioxide in surface sea water of a coastal area of the Gulf of Cádiz (southwestern Spain)

2005 ◽  
Vol 83 (7) ◽  
pp. 929-940 ◽  
Author(s):  
Emma Huertas ◽  
Gabriel Navarro ◽  
Susana Rodríguez-Gálvez ◽  
Laura Prieto
Keyword(s):  
Carbon Dioxide ◽  
Carbonic Anhydrase ◽  
Primary Production ◽  
Coastal Area ◽  
Phytoplankton Biomass ◽  
Carbon Fixation ◽  
Sea Water ◽  
Gulf Of Cadiz ◽  
Transparent Exopolymer Particles ◽  
Gulf Of Cádiz

The spatial variability in carbon dioxide in surface waters of a coastal area of the Gulf of Cádiz (southwestern Spain) was examined in situ under spring bloom conditions. The influence of phytoplankton biomass and physicochemical variables on the CO2 concentration was studied. According to the relationship observed between chlorophyll a and pCO2, phytoplankton biomass was the main factor responsible for variations in carbon dioxide. The distribution of organic matter in the form of dissolved organic carbon and transparent exopolymer particles also reflected changes in phytoplankton abundance, since high levels of both variables were associated with high chlorophyll concentrations and low levels of free CO2. The involvement of the enzyme carbonic anhydrase in the process of inorganic carbon uptake by the phytoplankton community was also investigated through the effect of the inhibitors dextran-bound sulfonamide and ethoxyzolamide on primary production rates. Ethoxyzolamide substantially inhibited carbon fixation, causing decreases of 40%–60% in the maximum photosynthetic rates; whereas the membrane impermeable inhibitor dextran-bound sulfonamide affected primary production, depending on the diversity of the phytoplankton species composition. Calculations of CO2 fluxes indicated that the sampled coastal sector of the Gulf of Cádiz behaved as a net sink for atmospheric CO2 at the time of analysis, with an average CO2 absorption of –0.41 mmol·m–2·d–1.Key words: air–sea exchange of CO2, carbonic anhydrase, flow cytometry, Gulf of Cádiz, phytoplankton, transparent exopolymer particles.

scholarly journals Benthic nutrient recycling on the northeastern shelf of the Gulf of Cádiz (SW Iberian Peninsula)

2009 ◽  
Vol 390 ◽  
pp. 79-95 ◽  
Author(s):  
S Ferrón ◽  
F Alonso-Pérez ◽  
E Anfuso ◽  
FJ Murillo ◽  
T Ortega ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Nutrient Recycling ◽  
Gulf Of Cadiz ◽  
Gulf Of Cádiz ◽  
Northeastern Shelf

Different pools of black carbon in sediments from the Gulf of Cádiz (SW Spain): Method comparison and spatial distribution

2013 ◽  
Vol 151 ◽  
pp. 13-22 ◽  
Author(s):  
Laura Sánchez-García ◽  
José R. de Andrés ◽  
Yves Gélinas ◽  
Michael W.I. Schmidt ◽  
Patrick Louchouarn
Keyword(s):  
Spatial Distribution ◽  
Black Carbon ◽  
Method Comparison ◽  
Gulf Of Cadiz ◽  
Sw Spain ◽  
Gulf Of Cádiz

Seasonality of contamination, toxicity, and quality values in sediments from littoral ecosystems in the Gulf of Cádiz (SW Spain)

Chemosphere ◽  
2002 ◽  
Vol 46 (7) ◽  
pp. 1033-1043 ◽  
Author(s):  
T.Ángel DelValls ◽  
Jesús M. Forja ◽  
Abelardo Gómez-Parra
Keyword(s):  
Gulf Of Cadiz ◽  
Sw Spain ◽  
Gulf Of Cádiz
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