A fluorometer on the basis of powerful light emitting diodes for determination of the chlorophyll “a” concentration

Povazhnyi, V. V.

doi:10.1134/s0001437014030102

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…Special attention was paid to studying the optical properties of seawater. A verification of the fluorometer developed at the SSC RAS [21] with new unique capabilities for measuring the optical seawater properties was also carried out. Seismic acoustic profiling was carried out in the eastern part of the Taganrog Bay aimed to study Holocene sediments and paleogeographic reconstruction of the Don Delta evolution.…”

Section: Research Vessel Denebmentioning

confidence: 99%

Research Vessel Deneb: 10 Years of Marine Scientific Research

Matishov¹,

Stepanyan²

2019

PhO

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Study of natural and anthropogenic processes in the southern seas of Russia is a priority task of the Southern scientific center of Russian Academy of Sciences. Annually for 15 years, the Southern scientific center of RAS carried out sea expeditions in the south of Russia. The year of 2017 was marked as a 10-year anniversary of the first expedition of the R/V Deneb in the Azov and Black seas. During a five-year period from 2012 to 2016, 36 complex expeditions in the Azov and Black seas were carried out by R/V Deneb; the oceanographic database was enriched with the data of 3500 oceanological stations, more than 11,000 samplings were done at more than 900 complex hydrobiological stations. The expeditionary materials enlarged the oceanographic database of the Southern scientific center: the field and archival data permitted to assess long-term dynamics of organic matter and carbon, the Azov Sea transparency and salinity and to calculate the characteristics of small-scale variability of temperature, salinity, internal waves and level fluctuations in the Azov and Black seas. The research in the Black Sea provided extensive synchronous data which characterize current state of the most vulnerable psammophilic benthic communities at the depths of 2-20 m. The estuaries of small rivers at their junction with the sea were studied in details. The new data on distribution and quantitative characteristics of jelly-like-, phyto-and pico-plankton over the whole shelf area of the Russian sector of the Black Sea is obtained. The Black Sea population of newcomers -Holland crabs (Rhitropanopaeus harrisi tridentate) -living exclusively in the sea canyons with unstable salinity was studied. The metagenomic approaches applied to study the plankton communities in the Azov and Black seas, were used to obtain new data on diversity and structure of marine bacterial communities. The oceanological observation data on the environment conditions in the Azov and Black seas are annually directed to the Hydrographic department of the Black Sea Navy of Russian Federation where it is used in the field service.

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Section: Research Vessel Denebmentioning

confidence: 99%

Research Vessel Deneb: 10 Years of Marine Scientific Research

Matishov¹,

Stepanyan²

2019

PhO

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LED&Paper-based analytical device for phosphatemia/calcemia diagnostics☆

Fiedoruk-Pogrebniak

Koncki

2020

Journal of Pharmaceutical and Biomedical Analysis

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Investigation on the Chlorophyll-aContent of Phytoplankton in the Sea of Azov and the Don River by the Fluorescence Method

Plyaka¹,

Glushchenko²,

Gerasyuk³

et al. 2020

Fluorescence Methods for Investigation of Living Cells and Microorganisms

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Results of in situ fluorescence investigations on chlorophyll-a (chl-a) of phytoplankton in the Sea of Azov (May to June 2018) and in the Don River estuary (September to November 2019) are presented. Continuous data series of chl-a fluorescence were obtained with flow-through fluorometers. Discrete reference measurements of chl-a concentration and phytoplankton biomass were performed by standard methods for the sake of comparison and eventual corrections. The fluorescence intensity values measured in a lateral surface salinity gradient of the Sea of Azov were found correlating with the obtained data on the chl-a concentration (R 2 = 0.88, n = 27) and phytoplankton biomass (R 2 = 0.90, n = 11). Instead, there was a weak correlation (R 2 = 0.40, n = 33) between the fluorescence and phytoplankton biomass found in the estuary. This disparity in correlations was explained by the difference in conditions during measurements, which affected the fluorescence. There were no significant changes in both temperature and coenotic composition of phytoplankton in the course of the marine expedition. The measurements on the river covered a period characterized by the seasonal variations in the phytoplankton composition and by noticeable temperature fluctuations.

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A fluorometer on the basis of powerful light emitting diodes for determination of the chlorophyll “a” concentration

Cited by 3 publications

References 10 publications

Research Vessel Deneb: 10 Years of Marine Scientific Research

Research Vessel Deneb: 10 Years of Marine Scientific Research

LED&Paper-based analytical device for phosphatemia/calcemia diagnostics☆

Investigation on the Chlorophyll-aContent of Phytoplankton in the Sea of Azov and the Don River by the Fluorescence Method

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