European Directory of Marine Environmental Data (EDMED)

Data set information

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General
Data set name

Zooplankton in the Central Baltic

Data holding centreLatvian Fish Resources Agency (LATFRA)
CountryLatvia  Latvia
Time period1960-1991 The Central Baltic ICES Sub-divisions 25,26,28 and 29 - Coastal zone of Soviet Union. Since 1992 standard net of stations in the Central Baltic and standard net of stations in the economical zone of Latvia.
OngoingYes
Geographical area

The Central Baltic

Observations 
Parameters

Zooplankton non taxonomy-related abundance per unit volume of the water column

Instruments

Plankton nets

Description 
Summary

Months: seasonal surveys (February, May, August, October) Depth: total depth - 0-100 m or 0-bottom (when depth is less than 100 m); layers - changeable by periods. Data processing: the total sample is diluted, mixed and two subsamples are taken and treated under a binocular microscope, determining all the specimens in the subsample. The size of the subsample depends on the abundance of zooplankton in the sample. The mean value of two subsamples is used to calculate the total number of specimens in 1 m3. The number of the rearest and the biggest species is determined in the whole sample. For Copepoda species 7 stages of development are determined, for other zooplankton species only the total number is determined.

OriginatorsLatvian Fish Resources Agency (LATFRA)
Availability 
OrganisationLatvian Fish Resources Agency (LATFRA)
AvailabilityBy negotiation
ContactGeorgs Kornilovs (Deputy director, head of Research department)
Address

Latvian Fish Resources Agency (LATFRA)
Daugavgrivas str. 8
Riga

LV-1048
Latvia

Telephone+371 67618892
Facsimile+371 67616946
Emailgeorgs.kornilovs@latzra.lv
Administration 
Collating centreLatvian Institute of Aquatic Ecology
Local identifier43002001
Global identifier1466
Last revised2009-01-30