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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Structural analysis of the meiobenthos communities of the shelf break area in two stations of the Gulf of Biscay (N.E. Atlantic).

A VANREUSEL, M VINCX, D VANGANSBEKE and W GIJSELINCK (1992)

Structural analysis of the meiobenthos communities of the shelf break area in two stations of the Gulf of Biscay (N.E. Atlantic).

BELGIAN JOURNAL OF ZOOLOGY, 122(2):185-202.

In a first attempt to obtain information in order to characterize the shelf break zone, the meiobenthos communities of two fine sandy stations of 190 m and 325 m depth in the Gulf of Biscay off the Spanish coast were investigated in relation to some environmental characteristics (sediment composition, chlorophyll a content, redox values). The nematodes, which are the dominant taxon, were studied in detail. Their communities are relatively poor in densities (840 and 779 individuals per 10 cm2) and biomass (0.137 and 0.334 mg dwt/10 cm2) compared to those of shallow coastal areas. The dominance of small species (mean individual biomass : 0.169 and 0.423 mug dwt) and a low total biomass can be related to the low chlorophyll a content (maximum of 1.14 mug/g). However, the number of nematode genera is much higher (46 and 62 genera per station) than on the continental shelves (often less than 40 species per 10 cm2). Sabatieria, Daptonema, Minolaimus, Richtersia and Halalaimus are the dominant genera in the two stations. These are also characteristic genera for the abyssal zone. The composition of the nematode communities is more similar to deep-sea communities than to those from subtidal zones. The low food supply is considered as an important structuring factor.

MEIOBENTHOS; NEMATODES; SHELF BREAK
BJZ

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Editor-in-Chief:
Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium

 



1863-1903
Annales de la Société malacologique de Belgique
 
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Belgian Journal of Zoology