Fig. 1. A - Absorption spectrum of phytoplankton suspension from central
area of the Baltic Sea. Values of absorption coefficients are averaged over
spectral regions 400-550 nm (afl) and 400-700 nm (aS).
B - Spectrum of the light used to excite chlorophyll fluorescence in
PrimProd fluorometer (1), and spectral distribution of underwater illumination
in clear water at depths of 1 (2), 5 (3), and 20 m (4).
Fig. 2. Histograms of km (A) and I1/2m (B) distribution, obtained
at the stations of Baltic Sea.