Comparison of benthic foraminifera and macrofaunal indicators of the impact of oil-based drill mud disposal

TitreComparison of benthic foraminifera and macrofaunal indicators of the impact of oil-based drill mud disposal
Type de publicationArticle de revue
AuteurDenoyelle, Mariéva, Jorissen, Frans , Martin, Daniel, Galgani, François, Miné, Jacques
EditeurElsevier
TypeArticle scientifique dans une revue à comité de lecture
Année2010
LangueAnglais
Date2010/11
Numéro11
Pagination2007 - 2021
Volume60
Titre de la revueMarine Pollution Bulletin
ISSN0025-326X
Mots-clésBio-indicators, Biotic index, Drilling mud, Foraminifera, Macrofauna
Résumé en anglais

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 out the benefits of (1) the use of macrofauna and foraminifera together and (2) the definition of the species groups used in biotic indices on the basis of observations made directly in the study area.

URL de la noticehttp://okina.univ-angers.fr/publications/ua3833
DOI10.1016/j.marpolbul.2010.07.024
Lien vers le document

http://dx.doi.org/10.1016/j.marpolbul.2010.07.024