Phytoplankton of the Amga River and chemical composition of the water: Contemporary state

This is the first study of phytoplankton of the full length of the Amga, a large river crossing Central and Southern Yakutia. The study has revealed characteristics of phytoplankton assemblages and formation of the hydrochemical regime of the river. We conducted a complex assessment of the water quality based on physicochemical indices, saprobic algae, and phytoplankton biomass. The results can serve as reference data for monitoring the river status during the operation of the East Siberia-Pacific Ocean oil pipeline.