Data/hora: 09/06/2024 02:54:51

Provedor de dados: | 27
País: | Belgium
Título: | Structural analysis of the meiobenthos communities of the shelf break area in two stations of the Gulf of Biscay (N.E. Atlantic)
Autores: | Vanreusel, A.; Vincx, M.; Van Gansbeke, D.; Gijselinck, W.
Data: | 1992
Ano: | 1992
Palavras-chave: | Abundance Biomass Deep sea Ecology Meiobenthos Nematoda [Nematodes] ASW; Puerto Rico Trench.
Resumo: | 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 &lt;i&gt;a&lt;/i&gt; 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 10cm&lt;i&gt;2&lt;/i&gt; and biomass (0.137 and 0.334mg dwt/10cm&lt;sup&gt;2&lt;/sup&gt;) compared to those of shallow coastal areas. The dominance of small species (mean individual biomass: 0.169 and 0.423 µg dwt) and a low total biomass can be related to the low chlorophyll &lt;i&gt;a&lt;/i&gt; content (maximum of 1.14 µg/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 cm&lt;sup&gt;2&lt;/sup&gt;). &lt;i&gt;Sabatieria, Daptonema, Minolaimus, Richtersia&lt;/i&gt; and &lt;i&gt;Halalaimus&lt;/i&gt; 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.vliz.be/imisdocs/publications/242558.pdf
Relação: | info:eu-repo/semantics/altIdentifier/wos/A1992KE40300004
Formato: | application/pdf
Fonte: | %3Ci%3EBelg.+J.+Zool.+122%282%29%3C%2Fi%3E%3A+185-202
Fonte: | info:eu-repo/semantics/openAccess