The Milo River,the main tributary of the Niger River,is a vital resource for the urban commune of Kankan.However,it is subject to increasing pressure from human activities,exacerbated by the effects of climate variabi...The Milo River,the main tributary of the Niger River,is a vital resource for the urban commune of Kankan.However,it is subject to increasing pressure from human activities,exacerbated by the effects of climate variability(rainfall,drought,and bank erosion).This study aims to analyze the effects of anthropogenic factors on the hydrological regime and environmental quality of the Milo River.A combination of quantitative and qualitative methods was used,including satellite data analysis,field observations,fish sampling,and socio-environmental surveys conducted with riverside communities(fishermen,farmers,brickmakers,and sand miners).The study’s results confirm a considerable drop in the water level in the Milo Riverbed,leading to a depletion of fish stocks.Agriculture,clay extraction from the riverbanks,sand quarrying,and brickmaking are the main human activities that negatively impact the river.Several fish species(Malapterurus electricus,Brycinus longipinnis,Parachanna obscura,and Polypterus senegalus)have been driven to extinction.Flow rate monitoring showed that during the rainy season,the average flow rate is 19.28 m³/s at station 1 and 11.83 m³/s at station 2,while during the dry season,the average flow rate is 4.88 m³/s at station 1 and 0.88 m³/s at station 2.The increase in human activities,combined with the effects of climate change,is intensifying the pressure on the Milo River.This situation manifests itself through a disruption of the hydrological regime,a degradation of water quality,and an impact on aquatic ecosystems.It becomes imperative to implement integrated and sustainable water resource management policies involving riparian communities.展开更多
文摘The Milo River,the main tributary of the Niger River,is a vital resource for the urban commune of Kankan.However,it is subject to increasing pressure from human activities,exacerbated by the effects of climate variability(rainfall,drought,and bank erosion).This study aims to analyze the effects of anthropogenic factors on the hydrological regime and environmental quality of the Milo River.A combination of quantitative and qualitative methods was used,including satellite data analysis,field observations,fish sampling,and socio-environmental surveys conducted with riverside communities(fishermen,farmers,brickmakers,and sand miners).The study’s results confirm a considerable drop in the water level in the Milo Riverbed,leading to a depletion of fish stocks.Agriculture,clay extraction from the riverbanks,sand quarrying,and brickmaking are the main human activities that negatively impact the river.Several fish species(Malapterurus electricus,Brycinus longipinnis,Parachanna obscura,and Polypterus senegalus)have been driven to extinction.Flow rate monitoring showed that during the rainy season,the average flow rate is 19.28 m³/s at station 1 and 11.83 m³/s at station 2,while during the dry season,the average flow rate is 4.88 m³/s at station 1 and 0.88 m³/s at station 2.The increase in human activities,combined with the effects of climate change,is intensifying the pressure on the Milo River.This situation manifests itself through a disruption of the hydrological regime,a degradation of water quality,and an impact on aquatic ecosystems.It becomes imperative to implement integrated and sustainable water resource management policies involving riparian communities.
