a*K.M. Umadevi, bP.R. Shilpa, cK. Sharadadevi and dKiran B.R.

a,b,cDepartment of Studies in Environmental Science, Davangere University, Shivagangothri, Davangere - 577007 India dDepartment of Environmental Science, University SMR College of Arts and Commerce, Shankaraghatta-577451 India Corresponding Author: K.M., Umadevi, Department of Studies in Environmental Science, Davangere University, Shivagangothri, Davangere - 577007 India

ABSTRACT

Water is the lifeblood of lakes, sustaining diverse ecosystems and serving as a vital resource for countless organisms, including humans. The importance of water in lakes extends far beyond its role as a mere liquid; it regulates temperature, supports aquatic life, and facilitates essential processes like nutrient cycling. The study presents a thorough investigation into the physical, chemical, and biological parameters of five lakes in Karnataka, India: Madiwala Lake, Matada Kere and Mallapura Lake, shedding light on their overall health and pollution status. Notable findings include deviations from Indian Standards Institute [IS] benchmarks, suggesting potential environmental challenges. Elevated temperatures, objectionable odors, and disagreeable tastes hint at pollution sources impacting water quality. Chemical analyses reveal varying pH levels, electrical conductivity, and dissolved oxygen concentrations, reflecting the dynamic nature of these ecosystems. Biological assessments, particularly fecal coliform counts, unveil fluctuating contamination levels, necessitating continual monitoring and management efforts. The research underscores the urgency of implementing remedial measures to enhance water quality and preserve the ecological balance of these lakes. Sustained vigilance and proactive interventions are imperative to mitigate pollution risks and ensure the long-term sustainability of freshwater reservoirs in the region. Key words : Biodiversity conservation, Chemical speci

Key words : Biodiversity conservation, Chemical speciation, Contaminant levels, Lake waters, Physico-chemical analysis, Water quality assessment.

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