Biosedimentary index (IBS) and biological quality of the water courses in the upper Bandama fauna and flora reserve (North-center Côte d'Ivoire)

Abstract

This study aimed to assess the biological quality of the Bamdama watercourse in the Upper Bandama Fauna and Flora Reserve. Macro-invertebrates were sampled between January 2018 and February 2019 using a kick net and Van Veen grab on twelve stations. A total of 3922 individuals of 199 taxa belonging to 8 classes, 27 orders and 87 families were collected. Insects appeared most abundant and diverse with 80.40% of the taxonomic richness and 66 % of the different classes represented. Based on the values of the Biosedimentary Index (IBS), the station (MS) located at the middle stream in the pond has water of «fair» biological quality. On the other hand, all other stations have «good» organic quality water.