Phytoplankton data collected in the Black Sea in 1958

Phytoplankton data collected in the Black Sea in 1958 and processed by Lyudmila Georgieva Samples were taken by 1 L bathometers at standard depths and at the thermocline layer. The standard sedimentation technique for samples preparation (Usachev, 1926) was used. Samples were preserved with a buffered formalin 40% and were settled within 30 days. Then a volume of water was siphoned off and samples were concentrated to 10-20 ml. After thorough mixing the subsamples (0.05 or 0.1 ml) were transferred to the counting chamber. Organisms were counted in two subsamples at ×300-400 magnification.

Data and resources

Additional information

Temporal extent1958-07-31 – 1958-07-31
Date (publication)2012-12-14
StatusonGoing
Update frequencyasNeeded
Metadata languageen
LicenseCreative Commons Attribution 4.0
Source metadataISO 19115 XML
Last updated2026-11-04
Created2026-11-04
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