Transformation of Particulate Organic Matter and Organic Matter of Bottom Sediments in River—Sea System

Dissolved and particulate organic matter transported to the ocean with river run-off affect the distribution and composition of organic matter in sea sediments. Organic matter serves as the regulator of many biogeochemical processes in both the water column and in bottom sediments. These processes are bound up with the formation of many minerals, including a number of rare and non-ferrous metals. Therefore, the knowledge of the nature and regularities of the distribution of organic compounds in waters and sediments of the river—sea system is extremely important for the knowledge of sedimentation processes in the ocean.