Anthropogenic Influence and Climate Change: Water and Nutrient Dynamics in the Kebir- Rhumel Basin, (Northeastern Algeria)

Abstract

This study investigates Anthropogenic Influence and Climate Change: Water and Nutrient Dynamics in the Kebir-Rhumel Basin in Northeastern Algeria. Integrating 10 physicochemical variables, a PCA analysis highlights two distinct factors accounting for 80.90% of the total variance and identifies a strong positive correlation between various variables, particularly NH4 and PO4. Two contrasting river areas were noted: Oued Radjas and Oued Rhumel rivers, displaying evidence of anthropogenic activities, and Oued Kebir and Oued El-Kotone rivers, indicative of pristine conditions. Seasonal fluctuations were noted in atmospheric temperature, precipitation, humidity, and wind speed, as well as in physical parameters and nutrient concentrations of surface water, suggesting the potential impact of human activities on water quality and ecosystem health. High EC and TDS values in the Oued Radjas River point to anthropogenic pollution, and high nitrogen nutrient concentrations in the Oued El-Kotonne River hint at potential eutrophication. The study underscores the importance of understanding the interplay between human activities and natural processes in managing water resources and ecosystems. Further research is needed to identify specific human contributors to water quality degradation and nutrient imbalances and to explore mitigation measures for sustainable development.