scholarly journals <i>p</i>CO<sub>2</sub> variability in the surface waters of the eastern Gulf of Cádiz (SW Iberian Peninsula)

Ocean Science ◽  
2019 ◽  
Vol 15 (5) ◽  
pp. 1225-1245 ◽  
Author(s):  
Dolores Jiménez-López ◽  
Ana Sierra ◽  
Teodora Ortega ◽  
Soledad Garrido ◽  
Nerea Hernández-Puyuelo ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Surface Waters ◽  
Temporal Variations ◽  
Mean Value ◽  
Gulf Of Cadiz ◽  
Partial Pressure Of Co2 ◽  
Gulf Of Cádiz ◽  
Eastern Shelf ◽  
Spatio Temporal ◽  
Guadalquivir River

Abstract. Spatio-temporal variations in the partial pressure of CO2 (pCO2) were studied during eight oceanographic cruises conducted between March 2014 and February 2016 in surface waters of the eastern shelf of the Gulf of Cádiz (SW Iberian Peninsula) between the Guadalquivir river and Cape Trafalgar. pCO2 presents a range of variation between 320.6 and 513.6 µatm with highest values during summer and autumn and lowest during spring and winter. For the whole study, pCO2 shows a linear dependence with temperature, and spatially there is a general decrease from coastal to offshore stations associated with continental inputs and an increase in the zones deeper than 400 m related to the influence of the eastward branch of the Azores Current. The study area acts as a source of CO2 to the atmosphere during summer and autumn and as a sink in spring and winter with a mean value for the study period of -0.18±1.32 mmol m−2 d−1. In the Guadalquivir and Sancti Petri transects, the CO2 fluxes decrease towards offshore, whereas in the Trafalgar transect fluxes increase due to the presence of an upwelling. The annual uptake capacity of CO2 in the Gulf of Cádiz is 4.1 Gg C yr−1.

scholarly journals Factors controlling pCO<sub>2</sub> variability in the eastern Gulf of Cádiz (SW Iberian Península)

2019 ◽  
Author(s):  
Dolores Jiménez-López ◽  
Ana Sierra ◽  
Teodora Ortega ◽  
Soledad Garrido ◽  
Nerea Hernández-Puyuelo ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Surface Waters ◽  
Mean Value ◽  
Gulf Of Cadiz ◽  
Partial Pressure Of Co2 ◽  
Gulf Of Cádiz ◽  
Eastern Shelf ◽  
Guadalquivir River ◽  
Range Of Variation ◽  
Capture Capacity

Abstract. Spatiotemporal variations of the partial pressure of CO2 (pCO2) were studied during 8 oceanographic cruises conducted between March 2014 and February 2016 in surface waters of the eastern shelf of the Gulf of Cádiz (SW Iberian Península) between the Guadalquivir River and Cape Trafalgar. pCO2 presented a range of variation between 320.6 and 513.6 µatm, with highest values during summer and autumn and lowest during spring and winter, showing a linear dependence between pCO2 and temperature. The distributions of pCO2 were not homogeneous. Spatially, there was a general decrease from coastal to off-shore stations associated with continental inputs and presented an increase in the zones deeper than 400 m due to the influence of the eastward branch of the Azores Current. On the other side, the study area acted as source of CO2 to the atmosphere during summer and autumn and as a sink in spring and winter, with a mean value for the study period of −0.18 ± 1.32 mmol m−2 d−1. In the Guadalquivir and Sancti Petri sections, the CO2 fluxes decreased towards offshore, whereas in the Trafalgar section increased due to the presence of an upwelling. These results highlighted the Gulf of Cádiz as a CO2 sink, with a capture capacity of 14.9 Gg year−1.

Distribution of N 2 O in the eastern shelf of the Gulf of Cadiz (SW Iberian Peninsula)

2017 ◽  
Vol 593-594 ◽  
pp. 796-808 ◽  
Author(s):  
A. Sierra ◽  
D. Jiménez-López ◽  
T. Ortega ◽  
R. Ponce ◽  
M.J. Bellanco ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Gulf Of Cadiz ◽  
Gulf Of Cádiz ◽  
Eastern Shelf

Air–sea CO2 fluxes in the north-eastern shelf of the Gulf of Cádiz (southwest Iberian Peninsula)

2011 ◽  
Vol 123 (1-4) ◽  
pp. 56-66 ◽  
Author(s):  
Mariana Ribas-Ribas ◽  
Abelardo Gómez-Parra ◽  
Jesús M. Forja
Keyword(s):  
Iberian Peninsula ◽  
Co2 Fluxes ◽  
Gulf Of Cadiz ◽  
The North ◽  
North Eastern ◽  
Gulf Of Cádiz ◽  
Eastern Shelf

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

scholarly journals Geographic variability of sardine dynamics in the Iberian Biscay region

2009 ◽  
Vol 66 (3) ◽  
pp. 495-508 ◽  
Author(s):  
A. Silva ◽  
D. W. Skagen ◽  
A. Uriarte ◽  
J. Massé ◽  
M. B. Santos ◽  
...  
Keyword(s):  
Bay Of Biscay ◽  
Geographic Variability ◽  
Gulf Of Cadiz ◽  
Migration Routes ◽  
Gulf Of Cádiz ◽  
Multiple Regression Models ◽  
Acoustic Surveys ◽  
Disaggregated Data ◽  
Geographic Differences ◽  
Spatio Temporal

Abstract Silva, A., Skagen, D. W., Uriarte, A., Massé, J., Santos, M. B., Marques, V., Carrera, P., Beillois, P., Pestana, G., Porteiro, C., and Stratoudakis, Y. 2009. Geographic variability of sardine dynamics in the Iberian Biscay region. – ICES Journal of Marine Science, 66: 495–508. The spatio-temporal variability in the distribution, demographic structure, recruitment, and mortality of sardine within the Iberian Biscay region is described using area-disaggregated data collected during acoustic surveys and at ports since the mid-1980s. Multiple regression models were used to describe log numbers-at-age obtained annually in ten areas covered by three surveys to test the existence of geographic differences in selectivity-at-age, recruitment strength, and mortality and to infer plausible migration routes. Within Iberian waters, sardine biomass was mainly concentrated off western Portugal and the Gulf of Cadiz. In the Bay of Biscay, biomass levels were comparable with those off western Portugal. Recruitment was localized in a few areas (northern Portugal and the Gulf of Cadiz and Bay of Biscay), intermingling with areas dominated by older fish. Recruitment was generally asynchronous among areas, although some recruitment peaks were noticeable across wider regions. Spatial patterns related to strong and weak year classes and year-class slopes were also noted. Clearly distinct dynamics were not evidenced within the Atlanto–Iberian sardine stock area, but the validity of the northern limit was questioned by the connection between sardine dynamics in the Bay of Biscay and the Cantabrian Sea. The results provided some evidence consistent with the hypothesis of sardine movement from recruiting grounds to areas farther along the coast as they grow.

Holocene highstand deposits in the Gulf of Cadiz, SW Iberian Peninsula: A high-resolution record of hierarchical environmental changes

2005 ◽  
Vol 219 (2-3) ◽  
pp. 109-131 ◽  
Author(s):  
F.J. Lobo ◽  
L.M. Fernández-Salas ◽  
F.J. Hernández-Molina ◽  
R. González ◽  
J.M.A. Dias ◽  
...  
Keyword(s):  
High Resolution ◽  
Iberian Peninsula ◽  
Environmental Changes ◽  
Gulf Of Cadiz ◽  
Gulf Of Cádiz
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