Corrigendum to ‘Isotopic evidence (87Sr/86Sr, δ7Li) for alteration of the oceanic crust at deep-rooted mud volcanoes in the Gulf of Cadiz, NE Atlantic Ocean’ [Geochim. Cosmochim. Acta 73 (2009) 5444–5459]

2015 ◽  
Vol 152 ◽  
pp. 52-53 ◽  
Author(s):  
Florian Scholz ◽  
Christian Hensen ◽  
Anja Reitz ◽  
Rolf L. Romer ◽  
Volker Liebetrau ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Oceanic Crust ◽  
Mud Volcanoes ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Isotopic Evidence ◽  
Gulf Of Cádiz ◽  
Ne Atlantic Ocean

scholarly journals Isotopic evidence (87Sr/86Sr, δ7Li) for alteration of the oceanic crust at deep-rooted mud volcanoes in the Gulf of Cadiz, NE Atlantic Ocean

2009 ◽  
Vol 73 (18) ◽  
pp. 5444-5459 ◽  
Author(s):  
Florian Scholz ◽  
Christian Hensen ◽  
Anja Reitz ◽  
Rolf L. Romer ◽  
Volker Liebetrau ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Oceanic Crust ◽  
Mud Volcanoes ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Isotopic Evidence ◽  
Gulf Of Cádiz ◽  
Ne Atlantic Ocean

scholarly journals The Interactive Role of Hydrocarbon Seeps, Hydrothermal Vents and Intermediate Antarctic/Mediterranean Water Masses on the Distribution of Some Vulnerable Deep-Sea Habitats in Mid Latitude NE Atlantic Ocean

Oceans ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 351-385
Author(s):  
Luis Somoza ◽  
José L. Rueda ◽  
Olga Sánchez-Guillamón ◽  
Teresa Medialdea ◽  
Blanca Rincón-Tomás ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Deep Sea ◽  
Hydrothermal Vents ◽  
Water Masses ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Hydrocarbon Seeps ◽  
Gulf Of Cádiz ◽  
Ne Atlantic Ocean ◽  
Deep Sea Corals

In this work, we integrate five case studies harboring vulnerable deep-sea benthic habitats in different geological settings from mid latitude NE Atlantic Ocean (24–42° N). Data and images of specific deep-sea habitats were acquired with Remoted Operated Vehicle (ROV) sensors (temperature, salinity, potential density, O2, CO2, and CH4). Besides documenting some key vulnerable deep-sea habitats, this study shows that the distribution of some deep-sea coral aggregations (including scleractinians, gorgonians, and antipatharians), deep-sea sponge aggregations and other deep-sea habitats are influenced by water masses’ properties. Our data support that the distribution of scleractinian reefs and aggregations of other deep-sea corals, from subtropical to north Atlantic could be dependent of the latitudinal extents of the Antarctic Intermediate Waters (AAIW) and the Mediterranean Outflow Waters (MOW). Otherwise, the distribution of some vulnerable deep-sea habitats is influenced, at the local scale, by active hydrocarbon seeps (Gulf of Cádiz) and hydrothermal vents (El Hierro, Canary Island). The co-occurrence of deep-sea corals and chemosynthesis-based communities has been identified in methane seeps of the Gulf of Cádiz. Extensive beds of living deep-sea mussels (Bathymodiolus mauritanicus) and other chemosymbiotic bivalves occur closely to deep-sea coral aggregations (e.g., gorgonians, black corals) that colonize methane-derived authigenic carbonates.

Three species of Reteporella (Bryozoa: Cheilostomata) in a diapiric and mud volcano field of the Gulf of Cádiz, with the description of Reteporella victori n. sp.

Zootaxa ◽  
2018 ◽  
Vol 4375 (1) ◽  
pp. 90 ◽  
Author(s):  
LAÍS V. RAMALHO ◽  
CARLOS M. LÓPEZ-FÉ ◽  
JOSÉ LUIS RUEDA
Keyword(s):  
New Species ◽  
Cold Water ◽  
Mud Volcanoes ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Invertebrate Fauna ◽  
Gulf Of Cádiz ◽  
Ne Atlantic Ocean ◽  
The Common ◽  
A New Species

Diapirs and mud volcanoes (MVs) are formed by the migration and extrusion of fluids and mud to the seafloor, respectively. In the Gulf of Cádiz there are ca. 60 MVs and several diapirs with different environmental conditions and seepage activity. Previous studies, mainly on MVs, have demonstrated that the invertebrate fauna associated with these seafloor structures can be very diverse, including chemosymbiotic species, mostly mollusks and frenulate polychaetes, as well as vulnerable suspension feeders, such as cold-water corals and sponges, among others. Previous studies of the bryozoan fauna in this area have recorded species belonging to 28 families. One of these families is Phidoloporidae, which comprises 27 genera worldwide, including the common Rhynchozoon, Reteporellina, and Reteporella. In the present study, two species belonging to Reteporella are redescribed, and a new species is described from diapirs and MVs on the shelf and slope of the Gulf of Cádiz. The samples were collected during several oceanographic expeditions carried out by the Instituto Español de Oceanografia. This genus is well represented in the NE Atlantic Ocean and the Mediterranean Sea, and our study extends its occurrence on MVs and diapirs fields of the 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 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.

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.

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

scholarly journals Tubiclavoides striatum gen. nov. et sp. nov. (Cnidaria: Hydrozoa) a new bathyal hydroid from the Gulf of Cadiz, north-east Atlantic Ocean

2007 ◽  
Vol 87 (2) ◽  
pp. 421-428 ◽  
Author(s):  
Carlos J. Moura ◽  
Marina R. Cunha ◽  
Peter Schuchert
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Cold Water ◽  
Full Description ◽  
Mud Volcanoes ◽  
Gulf Of Cadiz ◽  
North East ◽  
New Family ◽  
Gulf Of Cádiz ◽  
A New Species

Tubiclavoides striatum, a new species of an athecate hydroid, was found on mud volcanoes, inactive carbonate chimneys, and cold-water coral stands in the Gulf of Cadiz (south-western Iberian Peninsula, Atlantic Ocean). The new family Tubiclavoididae and the new genus Tubiclavoides are proposed to accommodate the new species. The new hydroid is characterized by scattered filiform tentacles, sporosacs developing among the tentacles and hydrocauli covered with striated perisarc, often subdivided into imbricating cones. A full description and illustrations are provided, as well as some notes on the ecology and distribution of the new species.

Microbial diversity in Frenulata (Siboglinidae, Polychaeta) species from mud volcanoes in the Gulf of Cadiz (NE Atlantic)

2011 ◽  
Vol 100 (1) ◽  
pp. 83-98 ◽  
Author(s):  
Clara F. Rodrigues ◽  
Ana Hilário ◽  
Marina R. Cunha ◽  
Andrew J. Weightman ◽  
Gordon Webster
Keyword(s):  
Microbial Diversity ◽  
Mud Volcanoes ◽  
Gulf Of Cadiz ◽  
Ne Atlantic ◽  
Gulf Of Cádiz
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