Impact of the Souapiti Dam on Fish Fauna Populations in the Konkouré River Estuary
DOI:
https://doi.org/10.64707/revstsna.v45i1.2127Keywords:
Estuary, Dam, Threats, Ichthyofauna, SouapitiAbstract
Fish fauna is threatened by the combined effects of climate change and human activities. The growth in the number of hydroelectric dams on rivers amplifies these threats. Very little data exists on the impact of dams on the country's fish fauna. This study was initiated to provide useful information on fish fauna after the construction of the Souapiti dam with a view to its sustainable management. Water samples were collected between March and July 2024 for physicochemical analysis. Using gillnets with different mesh sizes (10 mm, 20 mm and 30 mm), fish samples were collected at four (04) study stations in the estuary during the same period. The physical and chemical parameters of the estuary waters were favourable for the development of fish fauna. Twenty-one (21) families of fish divided into 28 genera and 35 species were found in the estuary after the dam was built. The most dominant families are Carangidae, Sciaenidae, Ariidae, Cichlidae, Claroteidae, Belonidae, Cynoglossidae, Mugilidae and Polynemidae. Compared to the first study, which reported forty-one
(41) species, there has been a decrease in species richness of six (6) species, although ten new species have been identified. The results obtained will serve as reference data for fisheries managers in implementing appropriate measures for better monitoring and sustainable exploitation of aquatic resources in the estuary.
References
Références bibliographiques
BRINKER A., CHUCHOLL C., BEHRMANN‐GODEL J., MATZINGER
M., BASEN T., BAER J., 2018. River damming drives population
fragmentation and habitat loss of the threatened Danube streber (Zingel streber): Implications for conservation. Aquatic Conservation: Marine and Freshwater Ecosystems. 28, 587–599. https://dx.doi.org/10.1002/aqc.2878 DOI: https://doi.org/10.1002/aqc.2878
CMB., 2000. Barrages et développement : un nouveau cadre pour la prise de décision, 19p.
COOKE S.J., COWX I.G., 2004. The Role of Recreational Fishing in Global Fish Crises. BioScience 54, 857–859. https://doi.org/DOI: 10.1641/0006-3568(2004)054[0857:TRORFI]2.0.CO;2 DOI: https://doi.org/10.1641/0006-3568(2004)054[0857:TRORFI]2.0.CO;2
EDG., 2003. Etude de l’impact du barrage de garafiri sur l’estuaire et le bassin versant du konkoure (Rapport final No. Tome 1). IRD - BCEOM - BRLi, 113p
ENELGUI., 1999. Etude de l’impact du barrage de Garafiri sur l’estuaire et le bassin versant du konkoure guinee (No. 3), lRD BCEOM BRLi, Guinée, 36p.
FQSA., 2024. Revue de littérature ; les impacts environnementaux liés à la présence des barrages sur l’habitat aquatique du saumon atlantique – préserver et restaurer la libre circulation du poisson. Québec, QC, 38p.
KABORE I., MOOG O., OUEDA A., SENDZIMIR J., OUEDRAOGO R.,
GUENDA W., MELCHER A.H., 2018. Developing reference criteria for the ecological status of West African rivers. Environmental Monitoring and Assessment 190, 17p. https://doi.org/10.1007/s10661- 017-6360-1 DOI: https://doi.org/10.1007/s10661-017-6360-1
KEUMEAN K.N., BAMBA S.B., SORO G., METONGO B.S., SORO N.,
BIEMI J., 2013. Evolution spatio-temporelle de la qualité physico- chimique de l’eau de l’estuaire du fleuve Comoé (Sud-est de la Côte d’ivoire). International Journal of Biological and Chemical Sciences 7, 1752–1766. http://dx.doi.org/10.4314/ijbcs.v7i4.31 DOI: https://doi.org/10.4314/ijbcs.v7i4.31
MANO K., 2016. Fish Assemblages and Aquatic Ecological Integrity in Burkina Faso. Thesis, University of Natural Resources and Life Sciences, Vienna Austria, 244p.
MCCARTNEY M., 2009. Living with dams: managing the environmental impacts. Water Policy 11 Suppl. 1, 121–139. https://doi.org/doi: 10.2166/wp.2009.108 DOI: https://doi.org/10.2166/wp.2009.108
MELCHER A., OUEDRAOGO R., OUEDA A., SOMDA J., SENDZIMIR J.,
SLEZAK G., VOIGT C., 2020. SUSFISHBook -Sustainable Fisheries and Water Management. Transformation Pathways for Burkina Faso. SUSFISH+Project Consortium, 141p. Http: //susfish.boku.ac.at/
ONIVOGUI G., BALDE S., BANGOURA K., BARRY M.K., 2013.
Évaluation des risques de pollution en métaux lourds (Hg, Cd, Pb, Co, Ni, Zn) des eaux et des sédiments de l’estuaire du fleuve Konkouré (Rep. de Guinée). Afrique Science. 09, 36–44.
OUEDRAOGO R., 2010. Fish and fisheries prospective in arid inland waters of Burkina Faso, West Africa. Thesis University of Natural Resources and Life Sciences, Vienna Austria, 222p.
PAUGY D., LEVEQUE C., TEUGELS G.G., 2003. Poissons d’eaux douces et saumâtres de l’Afrique de l’Ouest [The fresh and brackish water fishes of West Africa] Tome 1 et 2 IRD. Editions, coll. Faune et Flore tropicales, 40:1272.
SANGARE O., OUEDRAOGO I., SAWADOGO Y.M.-F., GBAGUIDI
A.M., OUEDA A., 2025. Dynamics of Colonization of Artificial Supports by Mangrove Oysters at Touguissouri (Republic of Guinea). Journal of Environmental Protection. 16, 809–829. https://doi.org/10.4236/jep.2025.168042 DOI: https://doi.org/10.4236/jep.2025.168042
SERET B., OPIC P., 2011. Poissons de mer de l’ouest africain tropical. IRD. ed. Marseille, 450p.
STRANZL S., 2014. Quantification of human impacts on fish assemblages in the Upper Volta catchment, Burkina Faso. Thesis University of Natural Resources and Life Sciences, Viena Austria, Vienna Austria, 91p.
THEA B., BANGOURA F., KABA O.M., KONATE Y., KONATE D.,
CAMARA A.M., 2023. Effects of the Construction of the Souapiti Hydroelectric Dam on the Ichthyofauna of the Konkouré River - Case of the Sub-prefecture of Tondon Republic of Guinea. Asian Journal of Fisheries and Aquatic Research. 22, 33–42. https://doi.org/DOI: 10.9734/AJFAR/2023/v22i2569 DOI: https://doi.org/10.9734/ajfar/2023/v22i2569
UICN/BRAO., 2005. Protéger l’environnement, c’est garantir le bien-être économique et social des populations d’Afrique de l’Ouest (Rapport Annuel 2004). Ouagadougou, Burkina Faso, 36p.
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