Spatio-temporal characterization of the ecological state of the Bandama River in the Marahoué region using diatomic indices

AKO Djiproh Marie-michael 1, *, BOUSSOU Koffi Charles 1, NIAMIEN-EBROTTIE Julie Estelle 2 and KOUAME Kouamé Martin 1

1 Laboratory of tropical biology and ecology, UFR environment, UNIVERSITE JEAN LOROUGNON GUEDE, BP 150 Daloa, Côte d'Ivoire
2 Laboratory of Environment and Aquatic Biology University NANGUI ABROGOUA UFR Science and Environmental Management, Laboratory of Environment and Aquatic Biology, 02 BP 801 Abidjan 02, Côte d'Ivoire
Research Article
World Journal of Advanced Research and Reviews, 2024, 22(03), 1575–1581
Article DOI: 10.30574/wjarr.2024.22.3.1651
Publication history: 
Received on 20 April 2024; revised on 13 June 2024; accepted on 15 June 2024
This study aims to know the ecological quality and the level of organic pollution of the waters of the Bandama River under high anthropogenic pressure. Benthic diatoms were collected from six stations from October 2019 to August 2020 due to one campaign per month in the Bandama River portion covering the Marahoué region. After analysis of the samples the specific pollution sensitivity index (SPI) and the diatom trophic index (TDI) were determined according to the spatiotemporal scale. The results of the IPS and TDI indices indicate average water quality. TDI results indicated that river trophic level varied from oligo-mesotrophic to mesotrophic at both spatial and temporal scales. Concerning the IPS index, the results reveal a moderate organic pollution to raise both on the spatial and temporal scale. This result challenges us on the need to put in place sustainable water resources management strategies that will take into account the physico-chemical quality of water and the preservation of biodiversity in order to guarantee health security, and food to populations directly and indirectly dependent on the Bandama.
Organic pollution; Bandama river; Diatomic index; Gold panning; Eutrophication
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