Dataset

Phytoplankton data collected in the Black Sea, Bosphorus area, Marmara Sea, Aegean Sea, Ionian Sea, Tunisian Strait, and Mediterranean Sea during the 65th cruise of the R/V "Kovalevskiy" in 1969-1970

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Phytoplankton data collected in the Black Sea, Bosphorus area, Marmara Sea, Aegean Sea, Ionian Sea, Tunisian Strain, and Mediterranean Sea during 65 cruise of the R/V "Kovalevskiy" and processed by Lyudmila Georgieva. The samples were taken with 6 liter bathometers at standard depths and in the thermocline layer. The standard sedimentation technique for samples preparation (Usachev, 1926) was used. Samples were preserved by 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.

Citation: Lyudmila Georgieva (2012). Phytoplankton data collected in the Black Sea, Bosphorus area, Marmara Sea, Aegean Sea, Ionian Sea, Tunisian Strait, and Mediterranean Sea during the 65th cruise of the R/V "Kovalevskiy" in 1969-1970. National Academy of Sciences of Ukraine; Institute of Biology of the Southern Sea

Published: September 17, 2025 at 09:54

URL: http://ipt.vliz.be/eurobis/resource?r=phytoplankton_blacksea_1969_1970

4,156
occurrence records
10,271
measurements and facts
178
taxa
131
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 4,156
100.0%
scientificNameID 203
4.9%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_ACCEPTED_NAME 573
13.8%
MARINE_UNSURE 262
6.3%
NO_MATCH 203
4.9%

Measurement types

DNA derived data