Seasonal and Long-Term Variations in the Concentrations and Discharges of Biogenic Substances in the Razdolnaya River (Primorskii Krai)

Abstract

Seasonal and long-term variations in the concentrations and discharge of dissolved nitrogen compounds and other biogenic substances by the Razdol'naya River runoff in the last 20 years are considered. The Razdol'naya River is one of the major rivers in the region, and its basin is subject to intense economic development. The natural and anthropogenic factors that affect variations in the concentrations of biogenic substances are characterized. The seasonal variations in the discharge of biogenic substances is shown to be controlled mostly by variations in water discharge.