La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Distribution of present Foraminifera in a Mediterranean ecosystem: Prevost Laguna (1998)
Auteurs :	A. Favry, Auteur ; O. Guelorget, Auteur ; J. P. Debenay, Auteur ; J. P. Perthuisot, Auteur
Type de document :	Article
Dans :	Vie et Milieu - Life and Environment (48(1) mars 1998)
Article en page(s) :	41-53
Langues:	Anglais
Résumé :	The present study aims to determine the organization of Foraminifera in a Mediterranean paralic ecosystem, the Prevost laguna, and to put in obviousness their distribution in function of the confinement zones. The distribution of Foraminifera is studied thanks to different methods of population study (specific richness, density, Fisher diversity index, correspondence analysis). The distribution of characteristic species is analyzed from the distribution of absolute and relative abundance. We observe, like in all paralic ecosystems studied up to now, a decrease of specific richness, from the areas under marine influence to the marginal lagoonal reaches. However, the density distribution is not established according to this same gradient. The strong densities noticed in more confined zones should be related to the chlorophycea alga proliferation that characterizes this laguna. Populations of Foraminifera are weakly diversified and characterize perfectly this ecosystem that is situated essentially in zone IV-V of confinement.
En ligne :	https://wwwphp.obs-banyuls.fr/Viemilieu/images/Archives_1950-2002/vie-et-milieu/VOLUME_1998_48_fasc1.pdf