Functional Activity of Phytoplankton and Optical Properties of Suspended Particulate Matter in Onega Bay of the White Sea

被引：2

作者：

Konyukhov, I., V ^{[1
]}

Kotikova, A. F. ^{[1
]}

Belevich, T. A. ^{[1
]}

Ilyash, L., V ^{[1
]}

Kravchishina, M. D. ^{[2
]}

Pogosyan, S., I ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Biol, Moscow, Russia

[2] Russian Acad Sci, Shirshov Inst Oceanol, Moscow, Russia

来源：

OCEANOLOGY | 2021年 / 61卷 / 02期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

phytoplankton; photosynthesis; chlorophyll fluorescence; suspended particles; ENVIRONMENTAL-CONTROL; CHLOROPHYLL D; SPRING BLOOMS; CYANOBACTERIA; PLANKTON; VARIABILITY; CONVECTION; CYCLES; CARBON; VOLUME;

D O I：

10.1134/S0001437021020077

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

The phytoplankton activity was analyzed in June 2015 in Onega Bay of the White Sea. The chlorophyll a concentration, as well as cell abundance and cell biomass, were assessed in natural phytoplankton samples and individually for the picoplankton fraction. These data were compared with the results of additional optical measurements for the same water samples. A strong correlation (R-2 = 0.82) was found between chlorophyll absorbance (similar to 680 nm, absorbance spectra) and in vivo chlorophyll fluorescence intensity. \Microalgae had a high level of photosynthetic efficiency (F-v/F-m > 0.4). The picoplankton fraction was characterized by less efficient photosynthesis, probably due to the presence of cyanobacteria. The picoplankton fraction contributed a few percent to the total biomass, whereas its contribution to the total chlorophyll fluorescence intensity reached up to 40%.

引用

页码：233 / 243

页数：11

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