Physical Oceanography, Vol.
SUMMER DYNAMICS OF PHYTOPLANKTON PIGMENTS AND ITS
CORRELATION WITH THE OPTICAL PARAMETERS OF SHELF
WATERS IN THE BLACK SEA (2001–2002)
G. P. Berseneva,
G. A. Tolkachenko,
and O.V. Martynov
We study the space and time variations of the concentration of chlorophyll in the Black-Sea
coastal zone (near Katsiveli) in summer 2001–2002. Typical vertical profiles of the pigments are
presented. The relations between the concentration of chlorophyll and the optical parameters of
seawater (including the Secchi depth, sea reflectance, effective wavelength of the upwelling radi-
ation, and the vertical attenuation coefficient of light) are analyzed. The equations for the bio-
logical parameters of seawater and its optical characteristics are presented.
The problems of estimation of the productivity of seawater and evaluation of its chlorophyll content ac-
cording to the spectrum of upwelling radiation are solved in the course of remote sensing of marine media. The
role of the most active component of seawater specifying its optical characteristics is played by the suspension of
mineral and organic substances. The latter are represented by living organisms (phytoplankton and bacteria) and
abiotic component (detritus).
At the same time, the optical characteristics of phytoplankton are determined by a collection of pigments,
the amount and quality of which vary depending on the abiotic conditions of the habitat and taxonomic composi-
tion of the phytoplankton community. The indicated multifactor dependence is responsible for the ambiguities in
the evaluation of the concentration of chlorophyll according to the data of remote sensing. At the same time, the
reliability of interpretation of the data of satellite observations can be significantly improved by taking into ac-
count the relationships between the optical and biological characteristics. In view of the regional specific fea-
tures of the composition and space and time distributions of admixtures in seawater, the indicated relationships
and their parameters should be experimentally checked for individual water areas.
The present work contains the analysis of the results of combined complex investigations of the optical and
biological characteristics of the coastal waters in the Black Sea carried out at the Marine Hydrophysical Institute
and the Institute of Biology of Southern Seas of the Ukrainian National Academy of Sciences in the summer pe-
riods of 2001 and 2002.
Equipment and the Procedures of Investigation
The investigations were carried out in the region of the oceanographic platform of the Marine Hydrophysi-
cal Institute located near the village of Katsiveli on the South Coast of Crimea within the periods
Institute of Biology of Southern Seas, Ukrainian Academy of Sciences, Sevastopol.
Marine Hydrophysical Institute, Ukrainian Academy of Sciences, Sevastopol.
Translated from Morskoi Gidrofizicheskii Zhurnal, No.
36–51, May–June, 2006. Original article submitted January 21, 2005;
revision submitted March, 3, 2005.
0928-5105/06/1603–0153 © 2006 Springer Science+Business Media, Inc. 153