I. E. Timchenko, I. P. Lazarchuk, E. M. Igumnova
Marine Hydrophysical Institute of RAS, Sevastopol, Russia
Abstract
A method is proposed to estimate the coefficients of influence in the adaptive model of ecosystem in the upper sea layer, based on average rates of biochemical interactions in the marine environment. As an example a simple casual relationships between the concentrations of phytoplankton, zooplankton, bioresource and oxygen is used. To calculate the normalized coefficients of influence that provide a stable solution to the equations of adaptive model of ecosystem the obtained equations are applicable. The model contained agents of resource limitation of zooplankton and oxygen concentrations, as well as agents that controlled the effect of upper sea layer temperature on the changes in zooplankton and bioresource concentrations. The method is used to construct spatial distributions of biochemical parameters in the west Black Sea from satellite observations of sea temperature and chlorophyll a concentration. The distributions of phytoplankton, zooplankton, bioresource and oxygen concentrations for this region are given, that represent its spatio-temporal variability. It is shown that the joint use of satellite observations and archival data on the mean values of the simulated processes make it possible to apply adaptive models of marine ecosystems to estimate the spatial distributions of ecosystem parameters in the upper sea layer.
Keywords
method of adaptive balance of influence, normalized coefficients of influence, distribution of biochemical fields