Megafauna of the Charlie–Gibbs Fracture Zone (northern Mid-Atlantic Ridge) based on video observations

2013 ◽  
Vol 93 (5) ◽  
pp. 1143-1150 ◽  
Author(s):  
A.V. Gebruk ◽  
E.M. Krylova
Keyword(s):  
Fracture Zone ◽  
Depth Range ◽  
East Atlantic ◽  
Species Occurrence ◽  
North East ◽  
The North ◽  
Local Species Richness ◽  
Video Observations ◽  
Local Species ◽  
Mid Atlantic Ridge

Megafauna from the Charlie–Gibbs Fracture Zone (northern Mid-Atlantic Ridge) based on video observations from submersibles was analysed. Species composition was examined, frequency of species occurrence on the fracture wall and its base (depth range from 1740 m to 3100 m) and density of megafauna in the depression at the fracture zone bottom (4200–4500 m depth) were evaluated. At depths between 1700 and 2500 m hexactinellid sponges were most common and diverse. Deeper parts of the wall and its base were dominated by anthozoans (especially gorgonian corals) and echinoderms. A set of dominant species in the lower bathyal in the study area was different from that on the lower continental slope in the north-east Atlantic (Porcupine Seabight). An important contribution to local species richness of ‘rare’ species was demonstrated. The elpidiid holothurian, Kolga nana, occurred at high density in the abyssal depression.

Cladorhizidae (Porifera, Demospongiae, Poecilosclerida) of the deep Atlantic collected during Ifremer cruises, with a biogeographic overview of the Atlantic species

2013 ◽  
Vol 95 (7) ◽  
pp. 1311-1342 ◽  
Author(s):  
J.T. Hestetun ◽  
M. Fourt ◽  
J. Vacelet ◽  
N. Boury-Esnault ◽  
H.T. Rapp
Keyword(s):  
Atlantic Ocean ◽  
Lower Number ◽  
Undescribed Species ◽  
East Atlantic ◽  
Antarctic Species ◽  
North East ◽  
The North ◽  
Mid Atlantic Ridge ◽  
Northern Atlantic ◽  
Upper Slope

The study presents Cladorhizidae collected during Ifremer cruises in the Atlantic Ocean from 1981 to 2004. Fifteen species are described from the generaAbyssocladia,Asbestopluma,ChondrocladiaandCladorhiza, with complete descriptions of five new species. While a couple of species were collected at 670–1010 m depth at the Rockall Bank, most species were collected at middle to lower bathyal and abyssal depths (~2000–5000 m), ranging from the northern Atlantic to the Mid-Atlantic Ridge and the coast of Africa at Gabon–Congo. A biogeographic analysis of currently known Arctic, Atlantic and some Antarctic species shows that the majority of included cladorhizids are described from the north-east Atlantic and Arctic Oceans while a lower number of species are known from other parts of the Atlantic Ocean. Large regions are poorly investigated, and previously undescribed species can be expected when sampling in these areas. A regional mostly endemic cladorhizid fauna is predicted for shelf and upper slope areas. Species in the lower bathyal and abyssal seem on the other hand to have a wider geographical distribution.

Reproductive Biology and Growth of the Genus Epizoanthus (Zoanthidea) From the North-East Atlantic

1986 ◽  
Vol 66 (1) ◽  
pp. 131-143 ◽  
Author(s):  
A. Muirhead ◽  
P. A. Tyler ◽  
M. H. Thurston
Keyword(s):  
Reproductive Biology ◽  
Depth Range ◽  
East Atlantic ◽  
North East ◽  
The North

The genus Epizoanthus Gray is represented in the north-east Atlantic by three species, all of which live commensally with pagurid crabs. The shallowest-living of the three, Epizoanthus incrustatus (Duben and Koren) occurs with Anapagurus laevis (Bell) within the depth range 20–200 m (Manuel, 1981). Epizoanthus paguriphilus Verrill and Epizoanthus abyssorum Verrill are associated with Parapagurus pilosimanus (Smith), the former within the depth range 600–1550 m and the latter at 3500–4350 m.

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

Exceptional influx of oceanic species into the North Sea late 1997

1999 ◽  
Vol 79 (4) ◽  
pp. 737-739 ◽  
Author(s):  
M. Edwards ◽  
A.W.G. John ◽  
H.G. Hunt ◽  
J.A. Lindley
Keyword(s):  
North Sea ◽  
Indicator Species ◽  
Climatic Conditions ◽  
Historical Evidence ◽  
East Atlantic ◽  
North East ◽  
The North ◽  
The North Sea ◽  
Oceanic Species

Continuous Plankton Recorder records from the North Sea and north-east Atlantic from September 1997 to March 1998 indicate an exceptional influx of oceanic indicator species into the North Sea. These inflow events, according to historical evidence, have only occurred sporadically during this century. This exceptional inflow and previous inflow events are discussed in relation to their similarity in terms of their physical and climatic conditions.

Artificial reefs in the North –East Atlantic area: Present situation, knowledge gaps and future perspectives

2021 ◽  
Vol 213 ◽  
pp. 105854
Author(s):  
Bianca Reis ◽  
Pieter van der Linden ◽  
Isabel Sousa Pinto ◽  
Emanuel Almada ◽  
Maria Teresa Borges ◽  
...  
Keyword(s):  
Present Situation ◽  
Artificial Reefs ◽  
Future Perspectives ◽  
East Atlantic ◽  
Knowledge Gaps ◽  
North East ◽  
The North ◽  
Atlantic Area

A population specific mitochondrial intron from the sponge Phakellia robusta in the North-East Atlantic

2021 ◽  
Vol 172 ◽  
pp. 103534
Author(s):  
Alex Cranston ◽  
Sergi Taboada ◽  
Vasiliki Koutsouveli ◽  
Astrid Schuster ◽  
Ana Riesgo
Keyword(s):  
East Atlantic ◽  
North East ◽  
The North
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