First results on determination of chlorophill A and its derivatives in the system of trapped sedimentary material–fluffy layer–bottom sediment of the Caspian Sea

Аннотация

The first data were obtained on the vertical chlorin flux in the water column and its accumulation in the upper layer of sediments of the Caspian Sea. Seasonal variability of the chlorine concentration in sedimentary matter was evaluated. The tendency of decrease in the phytoplankton-synthesized (allochtonous) organic matter content was revealed over approximately the past 60 years.