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Biological assemblages of three new mud volcanoes along deep-reaching transform...
Cunha, M.; Hilário, Ana; Vieira, R.P.; Adão, H.; Aranda, Silva A.; Ravara, A.; Terrinha, P.; Hensen, C.Previous work on the Gulf of Cadiz (S Iberian Margin) has revealed several mud volcanoes sitting on the accretionary wedge and aligned along west-east trending transform faults. The source of fluids in these mud volcanoes is several kilometres below the seafloor and their geochemical composition indicates that they are affected, in different degrees, by oceanic crust alteration, implying that there is active fl...
Nephtyidae (Annelida, Polychaeta) from southern Europe
Ravara, A; Cunha, MR; Pleijel, FEighteen nephtyid species belonging to four different genera are known from southern Europe. In this study we revise the nephtyids from this area and provide descriptions of all the known species. Geographical and bathymetrical distributions are given, together with ecological notes. Inermonephtys foretmontardoi, new species, is described, Micronephthys maryae is newly synonymized with M. stammeri and Aglaopham...
The occurrence of Natsushima bifurcata (Polychaeta : Nautiliniellidae) in Achar...
Ravara, A; Cunha, MR; Rodrigues, CFFifteen specimens of nautiliniellid polychaetes were found in the mantle cavity of bivalves of the genus Acharax (Solemyidae) collected in several mud volcanoes from the Gulf of Cadiz. They were identified as Natsushima bifurcata Miura and Laubier (1990), a species previously known only from Sagami Bay (Japan). The morphological comparison of these specimens with the holotype suggests that they belong to the sa...
Deep macrobenthic communities from Nazaré submarine canyon (NW Portugal)
Curdia, J; Carvalho, S; Ravara, A; Gage, JD; Rodrigues, AM; Quintino, VMacrofauna community structure within Nazare Submarine Canyon is analysed and used to assess the potential effects of natural enrichment in this area subjected to accumulation of coastal sediments. A transect including three stations (2894. 3514 and 4141 in) was carried out in the Nazare Submarine Canyon (NW Portugal) during a cruise of OMEX 11 programme (Ocean Margin Exchange), in the winter season of 1999. Al...
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