Cyanobacterial blooms in the Gulf of Finland 1994

Data set information

| Query EDMED |     

Data holding centreFinnish Environment Institute
CountryFinland  Finland
ProjectDynamics and regulation of cyanobacterial blooms in the Baltic Sea.
Time period21.7. - 3.8.1994
Geographical area

Pilot station grid and meso-scale surveys: area restricted by longitude 23° -24° E and latitude 59° 30 min - 59° 45 min N. Biological-chemical samplings at 5 stations along a cross-gulf transect 23° 23 min E. Anchor station on 25 July 25 at 59° 33 min N, 23° 23 min E.


Chlorophyll pigment concentrations in water bodies; Wind strength and direction; Nitrate concentration parameters in the water column; Phosphate concentration parameters in the water column; Primary production in the water column; Salinity of the water column; Horizontal velocity of the water column (currents); Silicate concentration parameters in the water column; Temperature of the water column; Bacterial production in the water column; Phytoplankton taxonomic abundance in water bodies; Density of the water column; Phytoplankton taxonomic biomass in water bodies


Fluorometers; current profilers; CTD; CTD undulators; discrete water samplers; autoanalysers; optical microscopes; liquid scintillation counters; current meters


The study began with a large-scale pilot survey on 21-23 July, consisting of CTD casts, nutrient sampling, and a semi-quantitative analysis of the phytoplankton species composition at 20 stations covering an area of ca. 43x21 km. Between 23 July and 3 August an intensive study was carried out, involving night-time mesoscale CTD/ Chl a fluorescence mappings and day-time biological-chemical samplings at 4-5 stations located along a fixed cross-gulf transect at 23 ° 23 min E (23 ° 06 min E on 29 July). Special attention was paid on the development of a subsurface chlorophyll maximum and fine scale nutrient intrusions.

OriginatorsEstonian Marine Institute
Finnish Institute of Marine Research
OrganisationFinnish Environment Institute
ContactKaisa Kononen (executive director)

Baltic Organisations Network for Funding Science EEIG
Hämeentie 33


Telephone+358 40 581 1189
Collating centreFinnish Institute of Marine Research
Local identifier19001039
Global identifier2065
Last revised2009-11-24