Length‐weight relationships of seven fish species from tidepools of an intertidal rocky shore in the Gulf of Cadiz, Spain (NE Atlantic)

2020 ◽  
Vol 36 (6) ◽  
pp. 852-854
Author(s):  
Jesus C. Compaire ◽  
Milagrosa C. Soriguer
Keyword(s):  
Fish Species ◽  
Rocky Shore ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Intertidal Rocky Shore ◽  
Gulf Of Cádiz

Macroinfaunal Communities on mud Volcanoes in the Gulf of Cádiz (NE Atlantic): Preliminary Results

2016 ◽  
Vol 32 (2) ◽  
pp. 65-74
Author(s):  
Candela Pérez ◽  
Santiago Parra ◽  
Joaquín Valencia-Vila ◽  
Carmen Vázquez ◽  
Juan Fernández ◽  
...  
Keyword(s):  
Mud Volcanoes ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Preliminary Results ◽  
Gulf Of Cádiz

scholarly journals Description of a new genus and species of Chrysopetalidae (Annelida: Polychaeta) from the NE Atlantic, with some further records of related species

2019 ◽  
Author(s):  
Ascensão Ravara ◽  
M. Teresa Aguado ◽  
Clara F. Rodrigues ◽  
Luciana Génio ◽  
Marina R. Cunha
Keyword(s):  
Dna Sequences ◽  
New Genus ◽  
Morphological Characteristics ◽  
Mantle Cavity ◽  
Full Description ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Free Living ◽  
The Family ◽  
Gulf Of Cádiz

Five chrysopetalid species are reported from samples collected at bathyal depths in three NE Atlantic regions: the Bay of Biscay, the Horseshoe Abyssal Plain and the Gulf of Cadiz. Arichlidon reyssi (Katzmann et al., 1974), Dysponetus caecus (Langerhans, 1880) and D. profundus Böggemann, 2009 are free-living forms found mainly on biogenic substrates (e.g., coral and sunken wood). A brief description and taxonomical remarks are given for each of these species and their geographical distributions and habitat records were updated accordingly. Natsushima bifurcata Miura & Laubier, 1990 and Craseoschema thyasiricola gen. et sp. nov. are symbionts inhabiting the mantle cavity of chemosynthesis-based bivalves known from four mud volcanoes from the Gulf of Cadiz. Craseoschema thyasiricola gen. et sp. nov. was found inside a thyasirid bivalve and presents mixed morphological characteristics of free-living and symbiotic forms within Calamyzinae Hartmann-Schröder, 1971. A full description of the new species is given together with DNA sequences of the genes COI, 16S and H3 that were used in a phylogenetic analysis to indicate the position of the new genus within the family.

scholarly journals Hydrological processes affecting the subtropical NE Atlantic (34–38° N) over the last 30 ka: evidence from phyto- and zooplankton assemblages

2011 ◽  
Vol 8 (2) ◽  
pp. 2281-2327 ◽  
Author(s):  
A. Penaud ◽  
F. Eynaud ◽  
A. Voelker ◽  
F. Marret ◽  
J. L. Turon ◽  
...  
Keyword(s):  
Transfer Functions ◽  
Distinct Species ◽  
Ekman Transport ◽  
Glacial Period ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Last Glacial Period ◽  
Last Glacial ◽  
Gulf Of Cádiz ◽  
The Last Glacial

Abstract. New dinocyst analyses were conducted on core MD99-2339 retrieved from the central Gulf of Cadiz. Dinocyst and foraminiferal assemblages from this core are combined with existing data off SW Portugal and NW Morocco to investigate past hydrological and primary productivity regimes in the subtropical NE Atlantic Ocean over the last 30 ka. Our results have revealed highest upwelling intensity during Heinrich Stadial 1 (HS 1) and the Younger Dryas and weaker upwelling cells during the Last Glacial Maximum and HS 2, off the SW Iberian and NW Moroccan margins. Similar assemblages between Cadiz and Morocco and distinct species off Portugal were observed during the cold climatic extremes that punctuated the last 30 ka. This pattern has been linked to the occurrence of a hydrological structure between SW Iberia and Cadiz during the last glacial period, probably similar to the modern Azores Front. This front was probably responsible locally for heterotrophic dinocysts found in the Gulf of Cadiz during the last glacial period, even if this sector is not conductive to upwelling phenomena by Ekman transport. Regional reconstructions of paleo-sea-surface temperatures using dinocyst and foraminiferal transfer functions, as well as alkenones, are also discussed and depict coherent scenarios over the last 30 ka. However, some mismatches are observed between the different quantitative reconstructions such as during HS 1 in the Gulf of Cadiz and during the LGM at the three core locations.

scholarly journals Paleohydrological changes over the last 50 ky in the central Gulf of Cadiz: Complex forcing mechanisms mixing multi-scale processes

2016 ◽  
Author(s):  
Aurélie Penaud ◽  
Frédérique Eynaud ◽  
Antje Helga Luise Voelker ◽  
Jean-Louis Turon
Keyword(s):  
North Atlantic ◽  
Regional Climate ◽  
Fine Tuning ◽  
General Context ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Cell Dynamics ◽  
Gulf Of Cádiz ◽  
Ne Atlantic Ocean ◽  
Forcing Mechanisms

Abstract. New dinoflagellate cyst (dinocyst) analyses were carried out at high-resolution in core MD99-2339, retrieved from a contouritic field in the central part of the Gulf of Cadiz, for the Marine Isotope Stage (MIS) 3 interval, allowing to discuss paleohydrological changes over the last 50 ky in the subtropical NE Atlantic Ocean. Some index dinocyst taxa, according to their (paleo) ecological significance, shed light on significant sea-surface changes. Superimposed on the general decreasing pattern of dinocyst export to the seafloor over the last 50 ky, paralleling the general context of decreasing aeolian dust fertilization, a complex variability in dinocyst assemblages was detected at millennial timescale. Enhanced fluvial discharges occurred during Greenland Interstadials (GI) and especially GI 1, 8 and 12, while enhanced upwelling cell dynamics were suggested during the Last Glacial Maximum and Heinrich Stadials. Finally, during the early Holocene, and more specifically during the Sapropel 1 interval (around 7–9 ka BP), we evidenced a strong decrease in dinocyst fluxes, which occurred synchronously to a strong reduction in Mediterranean Outflow Water strength, and that we attributed to an advection of warm and nutrient-poor subtropical North Atlantic Central Waters. Over the last 50 ky, our study thus allows capturing and documenting the fine tuning existing between terrestrial and marine realms in North Atlantic subtropical latitudes, not only in response to the regional climate pattern, but also to monsoonal forcing interfering during precession-driven northern hemisphere insolation maxima. This mechanism, well expressed during the Holocene, is superimposed on the pervasive role of the obliquity as a first major trigger for explaining migration of dinocyst productive centres in the NE Atlantic margin to the subtropical (temperate) latitudes during glacial (interglacial) periods.

Length–weight relationships of 76 fish species from the Gulf of Cadiz (SW Spain)

2012 ◽  
Vol 127-128 ◽  
pp. 171-175 ◽  
Author(s):  
M.A. Torres ◽  
F. Ramos ◽  
I. Sobrino
Keyword(s):  
Fish Species ◽  
Gulf Of Cadiz ◽  
Sw Spain ◽  
Gulf Of Cádiz

scholarly journals Palaeohydrological changes over the last 50 ky in the central Gulf of Cadiz: complex forcing mechanisms mixing multi-scale processes

2016 ◽  
Vol 13 (18) ◽  
pp. 5357-5377 ◽  
Author(s):  
Aurélie Penaud ◽  
Frédérique Eynaud ◽  
Antje Helga Luise Voelker ◽  
Jean-Louis Turon
Keyword(s):  
North Atlantic ◽  
Regional Climate ◽  
Fine Tuning ◽  
General Context ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Cell Dynamics ◽  
Gulf Of Cádiz ◽  
Ne Atlantic Ocean ◽  
Forcing Mechanisms

Abstract. New dinoflagellate cyst (dinocyst) analyses were carried out at high resolution in core MD99-2339, retrieved from a contouritic field in the central part of the Gulf of Cadiz, for the Marine Isotope Stage (MIS) 3 interval, allowing for discussion of palaeohydrological changes over the last 50 ky in the subtropical NE Atlantic Ocean. Some index dinocyst taxa, according to their (palaeo)ecological significance, shed light on significant sea-surface changes. Superimposed on the general decreasing pattern of dinocyst export to the seafloor over the last 50 ky, paralleling the general context of decreasing aeolian dust fertilization, a complex variability in dinocyst assemblages was detected at the millennial timescale. Enhanced fluvial discharges occurred during Greenland Interstadials (GIs), especially GI 1, 8 and 12, while enhanced upwelling cell dynamics were suggested during the Last Glacial Maximum and Heinrich Stadials. Finally, during the early Holocene, and more specifically during the Sapropel 1 interval (around 7–9 ka BP), we evidenced a strong decrease in dinocyst fluxes, which occurred synchronously to a strong reduction in Mediterranean Outflow Water strength and which we attributed to an advection of warm and nutrient-poor subtropical North Atlantic Central Waters. Over the last 50 ky, our study thus allows for capturing and documenting the fine tuning existing between terrestrial and marine realms in North Atlantic subtropical latitudes, in response to not only the regional climate pattern but also monsoonal forcing interfering during precession-driven Northern Hemisphere insolation maxima. This mechanism, well expressed during the Holocene, is superimposed on the pervasive role of the obliquity as a first major trigger for explaining migration of dinocyst productive centres in the NE Atlantic margin to the subtropical (temperate) latitudes during glacial (interglacial) periods.

Ocean surface water response to short-term climate changes revealed by coccolithophores from the Gulf of Cadiz (NE Atlantic) and Alboran Sea (W Mediterranean)

2004 ◽  
Vol 205 (3-4) ◽  
pp. 317-336 ◽  
Author(s):  
Elena Colmenero-Hidalgo ◽  
José-Abel Flores ◽  
Francisco J Sierro ◽  
M.Ángeles Bárcena ◽  
Ludvig Löwemark ◽  
...  
Keyword(s):  
Surface Water ◽  
Climate Changes ◽  
Ocean Surface ◽  
Alboran Sea ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Short Term ◽  
Gulf Of Cádiz ◽  
Water Response ◽  
Alborán Sea

Molecular and carbon isotopic variability of hydrocarbon gases from mud volcanoes in the Gulf of Cadiz, NE Atlantic

2006 ◽  
Vol 23 (3) ◽  
pp. 281-296 ◽  
Author(s):  
Alina Stadnitskaia ◽  
Michail K. Ivanov ◽  
Valentina Blinova ◽  
Rob Kreulen ◽  
Tjeerd C.E. van Weering
Keyword(s):  
Mud Volcanoes ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Hydrocarbon Gases ◽  
Carbon Isotopic ◽  
Gulf Of Cádiz
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