期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：12
页码：4591-4596
DOI：10.26872/jmes.2017.8.12.885
出版社：University of Mohammed Premier Oujda
摘要：The study of functional diversity based on trophic groups showed a spatial stratification of benthic macrofauna at Merja Zerga lagoon. Thus, from downstream to upstream, we demarcate a successive dominance of suspension feeders, subsurface deposit feeders, grazers and surface deposit feeders, respectively. The surface deposit feeders and carnivores dominate the species richness and the biomass of the structure while grazers dominate the abundance. This structure appears to be related to the diversity of habitats, sediment granulometry and abundance of seagrass and algae. The evaluation of the state of the ecological quality of the lagoon was performed using four biotic indices BOPA, AMBI, M-AMBI and ITI. Accordingly, we highlighted a first evaluation of the lagoon ecological status on the basis of benthic macroinvertebrates. Therefore, it appeared that benthic communities of the Merja Zerga are not severely disturbed as 74% of stations were classified as acceptable ecological status.
