| Registro completo |
| Provedor de dados: |
ArchiMer
|
| País: |
France
|
| Título: |
Quantitative sampling of soft-bottom macroepifauna for assessing the benthic system in the bay of brest (france)
|
| Autores: |
Jean, Frederic
Hilly, C
|
| Data: |
1994
|
| Ano: |
1994
|
| Palavras-chave: |
EPIBENTHOS
SAMPLING METHOD
QUANTITATIVE DISTRIBUTION
MICROHABITATS
TROPHIC WEB
|
| Resumo: |
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 microhabitats to the epifauna, providing sites for settlement to many suspension feeders and shelter to vagile predators, particularly brachyuran decapods. The contribution of quantitative epifaunal data to overall modelling of benthic trophic food webs is later discussed.
|
| Tipo: |
Text
|
| Idioma: |
Inglês
|
| Identificador: |
http://archimer.ifremer.fr/doc/00098/20894/18508.pdf
|
| Editor: |
Gauthier-Villars
|
| Relação: |
http://archimer.ifremer.fr/doc/00098/20894/
|
| Formato: |
application/pdf
|
| Fonte: |
Oceanologica Acta (0399-1784) (Gauthier-Villars), 1994 , Vol. 17 , N. 3 , P. 319-330
|
|
