IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Print this page

Echinoderms of the Mauritanian deep-sea waters
Calero, B.; Ramil, F.; Ramos, A. (2017). Echinoderms of the Mauritanian deep-sea waters, in: Ramos, A. et al. (Ed.) Deep-sea ecosystems off Mauritania: Research of marine biodiversity and habitats in the northwest African margin. pp. 445-480. https://hdl.handle.net/10.1007/978-94-024-1023-5_12
In: Ramos, A. et al. (Ed.) (2017). Deep-sea ecosystems off Mauritania: Research of marine biodiversity and habitats in the northwest African margin. Springer Science and Business Media: Dordrecht. ISBN 978-94-024-1021-1. xxvi, 508 pp. https://hdl.handle.net/10.1007/978-94-024-1023-5, more

Available in  Authors 

Keywords
    Biodiversity
    Geography > Biogeography
    Measurement > Depth measurement > Bathymetry
    Species composition
    Asteroidea [WoRMS]; Crinoidea [WoRMS]; Echinodermata [WoRMS]; Echinoidea [WoRMS]; Holothuroidea [WoRMS]; Ophiuroidea [WoRMS]
    Mauritania [Marine Regions]
Author keywords
    Assemblages; Deep-waters; Northwest Africa

Authors  Top 
  • Calero, B.
  • Ramil, F.
  • Ramos, A.

Abstract
    Echinoderms are the most important taxa of megabenthic invertebrates on the Mauritanian deep-sea floor, both in density and biomass. The phylum is represented by approximately 82 species, Ophiuroidea and Asteroidea being the most diverse classes (25 and 23 species, respectively), followed by Holothuroidea and Echinoidea (19 and 12 species, respectively). Crinoidea is poorly represented by only three species. Holothuroidea (sea cucumbers) are, undoubtedly, the main component of deep Mauritanian echinoderms, accounting for 85.5% of numerical abundance and 96.0% of biomass. Species belonging to Echinothurioida are dominant among the sea urchins. The most common echinoderm species are Phormosoma placenta, Enypniastes eximia, Psilaster cassiope, Benthothuria funebris, Ophiernus alepidotus, Pseudarchaster gracilis gracilis and Ophiura flagellata. The Mauritanian echinoderm fauna are mostly composed of species with Atlantic distribution (80.5%) and a smaller group of wide distribution species (19.5%). Only three species, two sea stars and one ophiuroid, could be considered as endemic to MacaronesianAfrican waters: Hymenaster roseus, Dyptaster mollis and Ophiothrix maculata. The bathymetric distribution of species and multivariate analysis clearly identify two main assemblages: the first groups the stations located on the deep shelf and upper slope (<400 m), and the second stations group located at greater depths along the continental slope.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors