Analyse Et Illustration De La Valeur Indicatrice Des Espèces Macrobenthiques Du Delta De l’Ouémé Au Bénin

Abstract

In this work, it was matter of determining the species characteristics of the delta of the Oueme through the illustration of their indicative value. Sampling was carried out in eight heterogeneous stations covering the periods of flood and low water. The various indices including that of biserial correlation IndVal (Indicator Value Index) and the cover sites of groups were used as the basis of analysis. The results showed that the selected significant indicative species are highly correlated and have a preference for stations full of organic and mineralized matter. Also, taxa have a marked preference for the flood season (21 taxa) than low water (5 taxa). Most characteristic taxa highlighted by this procedure should be useful to assess changes in quality of the plants studied. Most taxa characteristics highlighted by this procedure should be useful to assess changes in quality of the plants studied.

Impact De La Contamination Agricole Sur La Qualité Physico-Chimique Et Biologique Des Eaux De Surface : Synthèse Bibliographique

“…Ce sont des organismes sédentaires et diversifiés, passant une grande partie de leur cycle de vie dans l'eau et sont les meilleurs bio indicateurs (Mboye et al, 2020). Ainsi, à travers la valeur indicatrice de leur peuplement, les bio indicateurs peuvent fournir une signification écologique à une classification des communautés (Zinsou et al, 2017). Ainsi, les différentes espèces à la base de la production et de services écologiques de l'écosystème sont sous le contrôle des variables environnementales (Florence et al, 2018).…”

Impact of physicochemical parameters of water on the biodiversity of the invertebrate fauna from Echatt Lake, Northeast Algeria

“…Indeed, benthic macroinvertebrates are an important link in the food chain of aquatic environments, as they are a primary food source for several species of fish and birds (Karus et al 2014). Moreover, they actively participate in the transformation of organic matter and constitute good bioindicators (Parmar et al 2016;Ismail and Adnan 2016;Zinsou et al 2017;Ameur et al 2022). Therefore, faunistic and ecological studies are of primary importance in understanding the functioning and management of this natural system (Martinez-Haroetal 2015;Tshijik et al 2015).…”