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| Barras, Christine; Jorissen, Frans J.; Labrune, Celine; Andral, Bruno; Boissery, Pierre. |
| In this study, living (Rose Bengal stained) foraminiferal faunas from 31 stations along the entire French Mediterranean Sea coast except Corsica have been analysed. In the context of the Water Framework Directive, the aim was to develop a biotic index to evaluate the benthic ecosystem quality. Therefore, different faunal parameters (diversity indices, wall structure proportion, and indicative species groups) have been tested to determine their relevance as indicators of environmental conditions. The best results are obtained with a biotic index based on the relative proportion of stress-tolerant taxa. For ecosystem quality evaluation, it is essential to distinguish between natural and anthropogenic eutrophication phenomena. In order to do so, we applied a... |
| Tipo: Text |
Palavras-chave: Coastal Mediterranean Sea; Foraminiferal faunas; Indicative species; Tolerant species; Biotic index; Water Framework Directive. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00162/27312/28371.pdf |
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| Denoyelle, Marieva; Jorissen, Frans J.; Martin, Daniel; Galgani, Francois; Mine, Jacques. |
| We compare foraminifera and macrofauna as bio-indicators of oil-based drill mud disposal site off Congo. The most polluted sites are characterized by poor faunas, dominated by some very tolerant taxa. Slightly further from the disposal site, there is an area with strongly increased densities, heavily dominated by opportunistic taxa. Still further, macrofauna appears to be similar to that at the reference area, but the foraminiferal meiofauna still suggests a slight environmental perturbation. The foraminiferal FIEI index, based on the species distribution in the study area, appears to be more discriminative than the macrofaunal ITI index, based on a priori definitions of the trophic guilds of the various taxa. Our comparative approach allows us to point... |
| Tipo: Text |
Palavras-chave: Bio-indicators; Biotic index; Drilling mud; Foraminifera; Macrofauna. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00019/13027/10203.pdf |
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