Physical Oceanography, Vol. 19, No. 1, 2009
MANAGEMENT OF THE COASTAL-SEA-ZONE-ECOSYSTEM MODEL
E. M. Igumnova, S. M. Solodova, and I. E. Timchenko
We present a model of the processes of development in the ecosystem of the coastal zone of the
sea constructed by the method of adaptive balance of causes (ABC-method). The model con-
tains nine variables (phyto- and zooplankton, fish larvae, fishes, oxygen, carbon dioxide, salinity,
biogenic elements, and detritus) affected by the solar radiation, surface wind, sea temperature,
and river discharge. The equations of the model contain control agents governing the depen-
dences of the elements of the food chain on the vitally important resources and environmental
conditions. The scenarios of the processes of development are constructed for the simulated an-
nual courses of external actions. The possibility of management of fish resources by regulating
the flows of biogenic elements and detritus with river discharge is discussed. A mechanism of
management based on the monitoring of the concentration of dissolved oxygen in seawater is
proposed. The numerical experiments show that the ABC-model of the processes of develop-
ment in the ecosystem of the coastal zone of the sea makes it possible to simulate the scenarios of
regulation of the flows of biogenic elements and detritus into the sea with an aim of preservation
of of fish resources.
The coastal zone of the sea (CZS) serves as a source of various resources for the coastal region of the land.
At the same time, the CZS is affected by the economical activities in this region. Therefore, the ecosystem of the
CZS and the economic system of the coastal region form an integrated natural-and-economic complex. The
problem of stable development of complexes of this sort is now extensively studied due to the rapid growth of
population in these regions and the increasing role played by the coastal zones in the economies of various coun-
Thus, as indicated in the Demonstration Program of Integrated Coastal-Zone Management developed by the
European Commission , the sea coast of Europe plays (for many centuries) a key role in the economic deve-
lopment of the continent and elevation of the quality of life. The problem of management of the CZS is regarded
as a continuous process of support of the administrative decisions directed toward the investigation and rational
utilization of social, natural, and economic resources in a complex system formed by the coastal region of the
land and coastal zone of the sea. As shown in this program, the efficient management of the CZS resources is
impossible without using the systems approach  taking into account the entire complex of cause-and-effect re-
lations between the geophysical, economic, social, ecological, cultural, and other processes running in these sys-
In numerous works, the problem of growing conflict of interests in the consumption of the CZS resources is
studied from the position of close and direct cooperation between the participants of these processes [3, 4].
These studies are directed toward the creation of efficient procedures of long-term planning of the CZS resources
based on the application of dynamic models and expert estimations of the economical activity in the coastal regi-
on reflecting qualitative changes in the coastal marine media [5–7]. It was indicated that it is difficult to make
Marine Hydrophysical Institute, Ukrainian Academy of Sciences, Sevastopol, Ukraine.
Translated from Morskoi Gidrofizicheskii Zhurnal, No.
36–49, January–February, 2009. Original article submitted August 9,
2007; revision submitted September 7, 2007.
32 0928-5105/09/1901–0032 © 2009 Springer Science+Business Media, Inc.