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| Jean, Frederic; Hilly, C. |
| Macroepifauna of mixed sediments was quantitatively studied at three stations in the Bay of Brest. Samples were collected with the quantitative video dredge Aquareve II. Sampling performance varied from 6.1 to 55.6 m2 according to the mesh diameter of the net (10, 40, and 70 mm) and the quality and quantity of the hard structures lying on the bottom. The efficiency of the different sampling options is tested. The ecological analysis shows differences between epifaunal assemblages, which are mainly explained by the characteristics of the ruggedness in each station. Ruggedness is defined in terms of quality and quantity of hard structures (pebbles, gravel, shells, coraline algae and macroalgae) lying on the sediment surface. Hard substrates act as... |
| Tipo: Text |
Palavras-chave: EPIBENTHOS; SAMPLING METHOD; QUANTITATIVE DISTRIBUTION; MICROHABITATS; TROPHIC WEB. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00098/20894/18508.pdf |
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| Leguellec, C; Bodin, P. |
| In the eutrophicated Bay of Saint-Brieuc (western English Channel, France), density and biomass of the multicellular meiofauna were estimated in different intertidal and subtidal biotopes, in winter and late spring. Mean annual biomass varies from 0.5 to 2.3 g.m-2 in the intertidal zone, and from 0.5 to 1.1 g.m-2 in the subtidal zone. Vertical distribution (0-5 versus 5-10 cm) of taxa was considered in the intertidal zone. Results are discussed and compared to literature data: figures were similar to those of comparable biotopes, and there was no detectable effect of eutrophication on meiofauna density and vertical distribution in this area. The ''seasonal stability'' of nematodes was in contrast with a clear annual cycle in harpacticoid copepods. Biomass... |
| Tipo: Text |
Palavras-chave: MEIOBENTHOS; QUANTITATIVE DISTRIBUTION; FRENCH COAST OF ENGLISH CHANNEL; INTERTIDAL AND SUBTIDAL ZONES; ORGANIC MATTER. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00101/21233/18850.pdf |
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