European Directory of Marine Environmental Data (EDMED)

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Data set name

Primary productivity and chlorophyll-a in eutrophic layer of th southern Baltic data set (1970-95)

Data holding centreNational Marine Fisheries Research Institute (NMFRI)
CountryPoland  Poland
Time periodFrom 1970 to 1995
Geographical area

Southern Baltic, including the Bornholm and Gdansk Basins. Since 1983 the southern part of the Gotland Basin was also included.


Primary production in the water column


The main goal of these investigations was the determination of phytoplankton productivity and its temporal and spatial variability. The measurements were conducted at 3 stations located in the following areas: station P1 (Gdansk Deep; 54 50'N, 19 20'E), station P140 (Gotland Deep; 55 36'N, 18 26'E) and station P5 (Bornholm Deep; 55 14'N, 15 59'E). Up to 10 experiments were performed per year. Primary productivity was measured by an in situ C14 isotopic method at six depth levels of the euphotic layer (0, 2.5, 5, 10, 15, 20m). Simultaneously, the chlorophyll-a concentrations were determined spectrophotometrically in 90% acetone extracts of GF/F Whatman filters onto which the sea water had been filtered. No data are available for 1975. In the period 1976-1982, data were collected mainly in the Gdansk Deep. There are 261, 81 and 112 series for stations P1, P140 and P5, respectively.

OriginatorsNational Marine Fisheries Research Institute (NMFRI)
OrganisationNational Marine Fisheries Research Institute (NMFRI)
ContactDr. Wlodzimierz Grygiel (national co-ordinator of IBSSP)

National Marine Fisheries Research Institute (NMFRI)
Kollataja 1


Telephone+48 58 6201728
Facsimile+48 58 73 56 110
Collating centreInstitute of Meteorology and Water Management, Maritime Branch in Gdynia (IMWM MB)
Local identifier21005013
Global identifier1648
Last revised2009-01-19