Seasonal variation in the physico-chemical characteristics of lake Gyakar Sinyik (Ganga Lake): A wetland of eastern Himalayas, India

Lake Gyakar Syinik popularly known as Ganga Lake located in Itanagar wildlife sanctuaries, Eastern Himalaya was studied for a period of one year (Jan-Dec 2023).Physico-chemical characters like Temperature, pH, Electrical conductivity, Total dissolved solid, Salinity, Oxygen redux potential, Transparency and Dissolved oxygen content were recorded on monthly basis.Most of the parameters were within the range of Indian standards with variation between monsoon and non-monsoon season.However, with the oxygen reduction potential and less dissolved oxygen it gives a warning signals the deteriorating condition of wetland with a threat to the future of the biota living in.