2022/11/24 by Inès Khedhri, KHEDHRI, Ines, A. Atoui +5
Agricultural and Biological Sciences · Environmental Science · #African Botany and Ecology Studies #Anthropogenic factors #Aquatic Ecosystems and Biodiversity #Benthos #Bizerte #Communication #Date Palm Research Studies #Fisheries #Ghar El Melh Lagoon #Lagoons #MED #Marine #Organizations #Sediments #Tunisia #Water quality #Zoobenthos #benthic macrofauna #ecological status #trophic structure
paper · pdf · doi:10.71754/instm.bulletin.v44.157
openalex publication_date 2022/11/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/01
The lagoon of Ghar El Melh (Tunisia) is a Ramsar site subject to Anthropogenic activities. The lagoon ecosystem has been progressively deteriorated since 1994. Its water/sediment quality, its fisheries resources and its biodiversity have been reduced. The present work is a contribution to the study of the functional organization of the benthic macrofauna within the North part of the Ghar El Melh lagoon a few years after the extension of the El Boughaz channel which connects this lagoon to the open sea. Three stations in front of the Ghar El Melh town influences were sampled during spring 2017. Generally the results show a poor diversity of the benthic macrofauna. The registered values of the physico-chemical and sediment parameters show a spatial homogeneity of this part of the lagoon. The trophic organization, in turn, showed the dominance of selective deposit feeders resulting in trophic imbalance despite they are sensible species belonging to the ecological group 1. This allows biotic indices (AMBI and BENTIX) to classify sampled stations at a high ecological status.