Alkaline Phosphatase Activity and Phosphorus Dynamics in the Mixing Zone of the Selenga River and Lake Baikal

This article analyzes the features of spatiotemporal variability of alkaline phosphatase activity (APA) in the mixing zone of the Selenga River, the main tributary of Lake Baikal. We characterize the relationship of this indicator with the concentrations of organic and mineral phosphorus in water. This study confirms the possibility of using phosphatase activity to assess ecological condition and trophic state of aquatic ecosystems.