Features of Fluorescence Profiles and Species Composition of Phytoplankton in the Black Sea and the Sea of Azov
https://doi.org/10.59887/2073-6673.2023.16(4)-6
Abstract
The aim of this work was to study the properties of vertical fluorescence intensity (FI) profiles of phytoplankton pigments (chlorophyll-a, phycocyanin, phycoerythrin, and beta-carotene) using data on the phytoplankton species composition obtained during the cruise 114 of the R/V ‘Professor Vodyanitsky’. The analysis of covariance matrices of phytoplankton pigment FI profiles in the upper 50-meter layer of the Black Sea indicates that the pigment composition of phytoplankton changes with depth, which may be associated with changes in its species composition. At the same time, 80 % variability of phytoplankton pigment FI profiles in the upper 20-meter layer is described by the first eigenvector. It agrees well with direct observations of the phytoplankton species composition, indicating the dominance of one phytoplankton division in the 20-meter layer. In addition, there are regional peculiarities: for example, the average FI values of the phytoplankton pigments in the Sea of Azov are significantly higher than those in the Black Sea, which is associated with a higher concentration of phytoplankton in the Sea of Azov.
Keywords
phytoplankton pigment fluorescence,
phytoplankton species composition,
photosynthetic zone,
the Black Sea,
the Sea of Azov
Supporting agencies: The study was carried out within the framework of the state assignment of MHI RAS on themes No. FNNN-2021-0003 and IBSS No.FNNN-2021-0004, No.121041400077-1.
About the Authors
О. B. Kudinov
Marine Hydrophysical Institute, Russian Academy of Sciences
Russian Federation
Russian Federation
KUDINOV, Oleg B.
РИНЦ AuthorID: 861503, Scopus AuthorID: 57201072321
299011, Каpitanskaya Str., 2, Sevastopol
V. V. Suslin
Marine Hydrophysical Institute, Russian Academy of Sciences
Russian Federation
Russian Federation
SUSLIN, Vyacheslav V., Cand.Sc. (Phys.-Math.)
РИНЦ AuthorID: 825673
Scopus AuthorID: 6602501867, WoS ResearcherID: B-4994-2017
299011, Каpitanskaya Str., 2, Sevastopol
R. I. Lee
A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS
Russian Federation
Russian Federation
LEE, Raisa I.
РИНЦ AuthorID: 937587
299011, Pr. Nakhimova, 2, Sevastopol
D. А. Ryabokon
Marine Hydrophysical Institute, Russian Academy of Sciences
Russian Federation
Russian Federation
RYABOKON, Daniil A.
РИНЦ AuthorID: 1144660
299011, Каpitanskaya Str., 2, Sevastopol
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Review
For citations:
Kudinov О.B., Suslin V.V., Lee R.I., Ryabokon D.А. Features of Fluorescence Profiles and Species Composition of Phytoplankton in the Black Sea and the Sea of Azov. Fundamental and Applied Hydrophysics. 2023;16(4):75–86. https://doi.org/10.59887/2073-6673.2023.16(4)-6
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