scholarly journals The fate of Guadalquivir River discharges in the coastal strip of the Gulf of Cádiz. A study based on the linking of watershed catchment and hydrodynamic models

2021 ◽  
pp. 148740
Author(s):  
Juan J. Gomiz-Pascual ◽  
Marina Bolado-Penagos ◽  
Carlos J. Gonzalez ◽  
Agueda Vazquez ◽  
Cira Buonocore ◽  
...  
Keyword(s):  
Gulf Of Cadiz ◽  
Hydrodynamic Models ◽  
Gulf Of Cádiz ◽  
Guadalquivir River ◽  
Coastal Strip

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.

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 Identification of a non-native Cynoscion species (Perciformes: Sciaenidae) from the Gulf of Cádiz (southwestern Spain) and data on its current status

2017 ◽  
Vol 81 (1) ◽  
pp. 19 ◽  
Author(s):  
Rafael Bañón ◽  
Alberto Arias ◽  
Diego Arana ◽  
Jose A. Cuesta
Keyword(s):  
Ecological Impact ◽  
River Estuary ◽  
Spotted Seatrout ◽  
Current Status ◽  
Cynoscion Nebulosus ◽  
Gulf Of Cadiz ◽  
The Family ◽  
Gulf Of Cádiz ◽  
Guadalquivir River ◽  
Established Species

Cynoscion is a genus of fish in the family Sciaenidae from the Atlantic and Pacific American coasts that is important in recreational and commercial fisheries. Morphological analysis identifies a species inhabiting the Gulf of Cádiz (southern Spain) as the weakfish, Cynoscion regalis, a native of the northwest Atlantic. This finding is also confirmed by molecular identification using 16S and Cox1genes. Based on the examination of a previous manuscript, the assignation of this species to the spotted seatrout, Cynoscion nebulosus, is considered a misidentification. C. regalis has been reported in the area since 2011 and is now considered an established species that is distributed along the Guadalquivir River estuary and is a target of local artisanal fisheries. The pathway of introduction is unknown, but possible mechanisms are considered, of which ballast water seems to be the most plausible. A revision of non-native sciaenids also found in European waters is carried out. The ecological impact of weakfish on the local fish community is still unknown and should be object of future studies.

scholarly journals The ecosystem approach in the Gulf of Cadiz. A perspective from the southernmost European Atlantic regional sea

2016 ◽  
Vol 74 (1) ◽  
pp. 382-390 ◽  
Author(s):  
Marcos Llope
Keyword(s):  
Human Activities ◽  
Marine Ecosystem ◽  
Ecosystem Approach ◽  
Gulf Of Cadiz ◽  
Policy Goals ◽  
Gulf Of Cádiz ◽  
Conflicting Interests ◽  
Area Of Influence ◽  
High Level ◽  
Guadalquivir River

This article considers the major events in recent history, current situation and prospects for developing an ecosystem-based style of management in the Gulf of Cadiz. This particular socio-ecosystem is characterised by a clear focal ecosystem component—the role of the estuary of the Guadalquivir River as a nursery area—that has an influence on the marine ecosystem and at the same time concentrates a number of sectoral human activities. This nursery role particularly concerns the anchovy fishery, which is the most economically and culturally important fishery in the region. As a transition zone between river and marine environments, estuaries are particularly sensitive to human activities, either directly developed within the aquatic environment and its surroundings or further upstream within its catchment area. The particularities of the Guadalquivir socio-ecosystem, with an area of influence that extends as far as the city of Seville, require the consideration of multiple sectors and the corresponding conflicting interests. These include the shipping and tourism sectors, the agriculture, aquaculture, salt and mining industries, and the fisheries and conservation interests. This article aims to give an overview of the high-level policy goals and the jurisdictional framework, scope the sectors involved and describe the pressures and risks of their activities. It will identify conflicting interests relating to different visions of the ecosystem as well as the institutional arrangements that could be used to balance them and finally, put forward a vision for using ecosystem-based information to improve multi-sectoral management decisions.

FORMATION HISTORY AND OCEANOGRAPHIC CONTROL OF LATE HOLOCENE MUD DEPOCENTERS IN THE NORTHEASTERN GULF OF CADIZ, SOUTHERN SPAIN

2016 ◽  
Author(s):  
Mary Lee King ◽  
◽  
Till J.J. Hanebuth ◽  
Francisco Lobo ◽  
Hendrik Lantzsch ◽  
...  
Keyword(s):  
Late Holocene ◽  
Southern Spain ◽  
Gulf Of Cadiz ◽  
Formation History ◽  
Gulf Of Cádiz

Biogeochemistry of surface sediments in mud volcanoes of the Gulf of Cádiz

2021 ◽  
Vol 41 (3) ◽  
Author(s):  
Dolores Jiménez-López ◽  
Ana Sierra ◽  
Teodora Ortega ◽  
Sandra Manzano-Medina ◽  
M. Carmen Fernández-Puga ◽  
...  
Keyword(s):  
Surface Sediments ◽  
Mud Volcanoes ◽  
Gulf Of Cadiz ◽  
Gulf Of Cádiz

scholarly journals Thrust–wrench interference tectonics in the Gulf of Cadiz (Africa–Iberia plate boundary in the North-East Atlantic): Insights from analog models

2011 ◽  
Vol 289 (1-4) ◽  
pp. 135-149 ◽  
Author(s):  
João C. Duarte ◽  
Filipe M. Rosas ◽  
Pedro Terrinha ◽  
Marc-André Gutscher ◽  
Jacques Malavieille ◽  
...  
Keyword(s):  
Plate Boundary ◽  
Gulf Of Cadiz ◽  
East Atlantic ◽  
North East ◽  
The North ◽  
Gulf Of Cádiz ◽  
Analog Models

scholarly journals Latest Miocene restriction of the Mediterranean Outflow Water: a perspective from the Gulf of Cádiz

2021 ◽  
Vol 41 (2) ◽  
Author(s):  
Zhi Lin Ng ◽  
F. Javier Hernández-Molina ◽  
Débora Duarte ◽  
Francisco J. Sierro ◽  
Santiago Ledesma ◽  
...  
Keyword(s):  
Mass Exchange ◽  
Water Mass ◽  
Atlantic Water ◽  
Meridional Overturning Circulation ◽  
Gulf Of Cadiz ◽  
Mediterranean Outflow Water ◽  
Gulf Of Cádiz ◽  
Mediterranean Outflow ◽  
The Mediterranean ◽  
Water Mass Exchange

AbstractThe Mediterranean-Atlantic water mass exchange provides the ideal setting for deciphering the role of gateway evolution in ocean circulation. However, the dynamics of Mediterranean Outflow Water (MOW) during the closure of the Late Miocene Mediterranean-Atlantic gateways are poorly understood. Here, we define the sedimentary evolution of Neogene basins from the Gulf of Cádiz to the West Iberian margin to investigate MOW circulation during the latest Miocene. Seismic interpretation highlights a middle to upper Messinian seismic unit of transparent facies, whose base predates the onset of the Messinian salinity crisis (MSC). Its facies and distribution imply a predominantly hemipelagic environment along the Atlantic margins, suggesting an absence or intermittence of MOW preceding evaporite precipitation in the Mediterranean, simultaneous to progressive gateway restriction. The removal of MOW from the Mediterranean-Atlantic water mass exchange reorganized the Atlantic water masses and is correlated to a severe weakening of the Atlantic Meridional Overturning Circulation (AMOC) and a period of further cooling in the North Atlantic during the latest Miocene.

scholarly journals Evolution of the gulf of Cadiz margin and southwest Portugal contourite depositional system: Tectonic, sedimentary and paleoceanographic implications from IODP expedition 339

2016 ◽  
Vol 377 ◽  
pp. 7-39 ◽  
Author(s):  
F.J. Hernández-Molina ◽  
F.J. Sierro ◽  
E. Llave ◽  
C. Roque ◽  
D.A.V. Stow ◽  
...  
Keyword(s):  
Gulf Of Cadiz ◽  
Depositional System ◽  
Gulf Of Cádiz
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