On Correlation between Inherent Optical Properties at 650 nm, Secchi Depth and Blue-green Algal Abundance for the Gorky Reservoir
https://doi.org/10.7868/S2073667318030036
Abstract
The present work is devoted to the investigation of the hydro-optical regime of the Gorky reservoir, based on shipboard and laboratory measurements of the characteristics of optically active components and inherent optical properties in 2016 year. The data collected at 97 stations covering more than half the area of the lake part of the reservoir are analyzed. The dominant influence of blue-green algae on the transparency of the water column was observed under the quasi-constant spatio-temporal distribution of dissolved organic matter at the level of 11—12 mg/l and the negligible presence of a mineral suspension. The limits of the Secchi depth variability from 0.2 to 3.5 m respectively algal abundance from 500 to 100 000 cells/ml are established. For this ranges regressions between some inherent optical properties and blue-green algal abundance were constructed as well as formulas for estimating attenuation coefficient and the single scattering albedo by Secchi depth were obtained.
Supporting agencies: This work was supported by grants RFBR № 17-05-00897.
About the Authors
A. A. Molkov
Institute of Applied Physics RAS
Russian Federation
Russian Federation
Nizhny Novgorod
I. A. Kapustin
Institute of Applied Physics RAS
Russian Federation
Russian Federation
Nizhny Novgorod
Yu. B. Shchegolkov
Institute of Applied Physics RAS
Russian Federation
Russian Federation
Nizhny Novgorod
E. L. Vodeneeva
Lobachevsky State University of Nizhny Novgorod
Russian Federation
Russian Federation
Nizhny Novgorod
I. N. Kalashnikov
Privolzhsky Research Medical University
Russian Federation
Russian Federation
Nizhny Novgorod
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Review
For citations:
Molkov A.A., Kapustin I.A., Shchegolkov Yu.B., Vodeneeva E.L., Kalashnikov I.N. On Correlation between Inherent Optical Properties at 650 nm, Secchi Depth and Blue-green Algal Abundance for the Gorky Reservoir. Fundamental and Applied Hydrophysics. 2018;11(3):26-33. https://doi.org/10.7868/S2073667318030036
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