статья в журнале

En

Geography and Natural Resources

ISSN:1875-3728
eSSN:1875-371X

2019

Sherstyankin, P.P.¹

10.1134/S1875372819030089

Use of hydrooptical characteristics in monitoring the reservoir ecosystem is investigated. Two basic characteristics which are most commonly used for purposes of ecological monitoring having regard to information content and ease of measurements are considered: the beam attenuation coefficient epsilon, the and Secchi disc depth Z(SD). Theoretical analysis shows a relationship of epsilon and Z(SD) with content of suspended matter and chlorophyll in water. It is concluded, however, that correct theoretical calculations of the content of these substances is not possible to correctly calculate these substances in a theoretical way from e and Z(SD). In this context, empirical relationships of suspended matter and chlorophyll concentrations with hydrooptical characteristics are used for monitoring purposes. These relationships are regional in character, which is accounted for by the regional composition of suspended matter and by the intracellular concentration of pigments in algae. Examples of empirical relationships of suspended matter and chlorophyll concentrations with the beam attenuation coefficient and the Secchi depth in Lake Baikal, the Black Bea and the tropical waters of the Atlantic waters are given. It is found that in addition to the content of suspended matter and chlorophyll in reservoirs, it is important, for biological purposes, to know the thickness of the euphotic layer for total quantum irradiation H-euph.quant. Examples of the determination of the euphotic layer thickness for total quantum irradiation H-euph.quant. using Secchi depth for different reservoirs are provided.

BEAM ATTENUATION COEFFICIENT, SECCHI DEPTH, SUSPENDED MATTER, CHLOROPHYLL, DISSOLVED ORGANIC MATTER, EUPHOTIC LAYER THICKNESS

2019-12-12 15:49:00