DIFFERENT FRACTIONS OF PRIMARY PRODUCTION IN LARGE SHALLOW EUTROPHIC LAKE VÕRTSJÄRV, ESTONIA; pp. 91–106

BENTHIC ANIMAL COMMUNITIES OF EXPOSED BAYS IN THE WESTERN GULF OF FINLAND (BALTIC SEA); pp. 107–116

CORRELATIONS BETWEEN LIMNOLOGICAL VARIABLES OF ESTONIAN LAKES; pp. 117–129

CHANGES IN THE HUMAN IMPACT ON LAKE RUUSMÄE IN RECENT DECADES AND THEIR REFLECTION IN THE SEDIMENTARYORGANIC MATTER; pp. 130–142

CORRECTING ERRORS ASSOCIATED WITH UNDERWATER SPECTRAL IRRADIANCE MEASUREMENTS; pp. 143–148

INFLUENCE OF THE CONDITIONS OF PRESERVING WATER SAMPLES AND THEIR DELAYED PROCESSING ON THE LIGHT ATTENUATION COEFFICIENT SPECTRA AND THE CONCENTRATIONS OF WATER CONSTITUENTS; pp. 149–159

PRELIMINARY RESULTS OF OPTICAL STUDIES MADE IN THE SOUTHERN OCEAN; pp. 160–168

OCCURRENCE OF DIFFERENT MORPHOLOGICAL FORMS OF Cercopagis IN THE BALTIC SEA; pp. 169–172