Éditeur(s) : Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1991
Résumé : On the bathyal slope for continental margins, steep and rocky substrates punctuated with cliffs and collapsing zones are frequently found. As survey and sampling with the classical technics from the sea surface is practically impossible in such an environment, in situ exploration with a submersible allows significant advances in ecology, with implications in paleoenvironment reconstruction. Mixing of material from shallow-water and deep-sea origins into bathyal sedimentation suggests that the so-called "fossil assemblages of outer platform" were frequently misinterpreted. Dense populations of animals closely related to fossil groups which were only considered as relict of the Past ("living fossils") and previously interpreted as shallow-water inhabitants during geological times can be discovered living in such bathyal communities. The role of bathyal ecological niches during global bioevents brings a new vision of the history of life in the Ocean through geological time and has to be further investigated. Examples from cruises monitoring the diving saucer Cyana (SP 3000) in the Bay of Biscay and off New Caledonia are given.

Droits : info:eu-repo/semantics/openAccess
http://archimer.ifremer.fr/doc/1990/acte-1138.pdf
http://archimer.ifremer.fr/doc/00000/1138/

Éditeur(s) : Gauthier-Villars
Résumé : Relatively little is known of the fauna found on rock substrates in the deep ocean. As a result of the Franco-British deep diving cruise Cyaporc in 1986 using the submersible Cyana we present observations of a highly diverse sponge, cnidarian and echinoderm fauna occurring between 1 800 and 3 000 m on the steep slopes to the west of the Porcupine Bank and Goban Spur. This fauna is dominated. by suspension feeders and appears to show a vertical zonation corresponding to water mass structure. The highest biomass and variety of echinoderms are found between 2 100 and 2 600 m bathed in northward flowing North East Atlantic Deep Water. We present also additional observations of species known from previous sampling programmes but rarely photographed in their natural environment.
Oceanologica Acta (0399-1784) (Gauthier-Villars), 1992 , Vol. 15 , N. 2 , P. 211-226

Droits : info:eu-repo/semantics/openAccess
http://archimer.ifremer.fr/doc/00100/21154/18773.pdf
http://archimer.ifremer.fr/doc/00100/21154/

Éditeur(s) : Museum National d'Histoire Naturelle
Résumé : During the " Jean Charcot " cruise Polymed II, 18 species of the 5 classes of Echinodermata have been collected in 15 samples from the bathyal zone of the Alboran sea. Most species are already known from the Mediterranean and the North East Atlantic. Some rare species (Odontaster mediterranea, Ophiactis balli) have been collected, and two others (Neocomatella europaea. Henricia abyssalis) are recorded for the first time in the Mediterranean. Endemic distributions of Ceramaster hystricis and Ophiocten abyssicolum are discussed. The Echinoderms population of the Alboran sea is noteworthy for its Atlantic characteristic, which is besides, dominating in the North part of this area. The atlantic biogeographical relationships of the Echinoderm fauna of the Alboran sea is especially perceptible in the northern part of the basin. [NOT CONTROLLED OCR]
Lors de la campagne Polymède II du " Jean Charcot ", 18 espèces appartenant aux cinq classes d'Échinodermes ont été récoltées dans 15 prélèvements effectués dans l'étage bathyal de la mer d'Alboran. La plupart des espèces sont connues à la fois de la Méditerranée et des côtes européennes et africaines de l'Atlantique. On peut signaler la récolte d'espèces considérées comme rares en Méditerranée (Odontaster mediterranea, Ophiactis balli) et d'autres nouvelles pour cette mer (Neocomatella europaea, Henricia abyssalis). L'endémisme de deux espèces Ceramaster hystricis et Ophiocten abyssicolum est rediscuté. La faune échinologique de la mer d'Alboran se caractérise par sa dominance atlantique par ailleurs plus sensible au nord qu'au sud. [OCR NON CONTRÔLE]
Bulletin du Museum National d'Histoire Naturelle (Museum National d'Histoire Naturelle), 1974-08 , Vol. 3 , N. 231 , P. 25-34

Droits : Museum National d'Histoire Naturelle
http://archimer.ifremer.fr/doc/1974/publication-4975.pdf
http://archimer.ifremer.fr/doc/00000/4975/

Éditeur(s) : HAL CCSD Elsevier Elsevier Masson
Résumé : New field and micropalaeontological investigations have been conducted in four of the Pliocene rias of the internal zone of the Rif in Morocco, on the southern margin of the Alboran Sea. We found that marine sediments outcropping in these rias were deposited mainly during the Early Zanclean, between 5.04 and 3.8 Ma. After a transgressive episode that led to the deposition of terrestrial to marine conglomerates, dark clays deposited first at shallow palaeo-depths and then at bathyal palaeo-depths. The rias were then infilled with a shallowing upward succession comprising marine clays and sandstone and, locally, terrestrial sediments that indicate their final emersion. No Gilbert-deltas were observed in these rias. The presence of transgressive deposits at the bottom of the rias, also identified in other basins of the external zone of the Rif, and the absence of Gilbert deltas question a catastrophic reflooding after the Messinian Salinity Crisis in this area.
ISSN: 1631-0713

hal-01115243
https://hal.archives-ouvertes.fr/hal-01115243
DOI : 10.1016/j.crte.2014.03.002