Effect of dissolved and suspended matter on light in the sea and phytoplankton light absorbance capacity in coastal waters of the Black Sea
https://doi.org/10.7868/S2073667320020057
Abstract
The effect of in water optically active components on spectral downwelling irradiance and on phytoplankton capacity to absorb light has been investigated in coastal waters of the Black Sea near Crimean Peninsula, where spectral light absorption coefficients of phytoplankton, non-algal particles and colored dissolved organic matter were measured in different seasons 2016. It has been revealed, that an increasing of content of optically active components effect on the spectral features of downwelling irradiance — shift of wavelength of the maximum of spectral downwelling irradiance to the longer wavelength on ~25–40 nm, which resulted in ~3 times decreasing of the spectrally weighted chlorophyll-a specific absorption coefficient. It has been shown that change in spectral downwelling irradiance, caused by content of any optically active components, is described by its relationship on ratio between light absorption coefficients of colored detrital matter and phytoplankton pigment (aCDM(440)/aph(440)), which is optical depth-dependent.
About the Authors
T. Ya. Churilova
A.O. Kovalevsky Institute of Biology of the Southern Seas RAS
Russian Federation
Russian Federation
299011, Nakhimova Prospekt, 2, Sevastopol
V. V. Suslin
Marine Hydrophysical Institute RAS
Russian Federation
Russian Federation
299011, Kapitanskaya Str., 2, Sevastopol
T. V. Efimova
A.O. Kovalevsky Institute of Biology of the Southern Seas RAS
Russian Federation
Russian Federation
299011, Nakhimova Prospekt, 2, Sevastopol
N. A. Moiseeva
A.O. Kovalevsky Institute of Biology of the Southern Seas RAS
Russian Federation
Russian Federation
299011, Nakhimova Prospekt, 2, Sevastopol
E. Yu. Skorokhod
A.O. Kovalevsky Institute of Biology of the Southern Seas RAS
Russian Federation
Russian Federation
299011, Nakhimova Prospekt, 2, Sevastopol
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Review
For citations:
Churilova T.Ya., Suslin V.V., Efimova T.V., Moiseeva N.A., Skorokhod E.Yu. Effect of dissolved and suspended matter on light in the sea and phytoplankton light absorbance capacity in coastal waters of the Black Sea. Fundamental and Applied Hydrophysics. 2020;13(2):43-50. (In Russ.) https://doi.org/10.7868/S2073667320020057
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