Effect of Sea Water Trophic Level on Migration and Deposition of Man-Made Plutonium Radionuclides

The comparative analysis of an impact of the trophic level on the redistribution of plutonium radionuclides in marine ecosystems at different spatial scales was carried out for semi-closed coastal areas, the western part of the Black Sea, open areas of the Black and Mediterranean seas. The quantitat...

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Bibliographic Details
Published inŽurnal Sibirskogo federalʹnogo universiteta. Seriâ Biologiâ (Online) Vol. 10; no. 1; p. 20
Main Author Tereshchenko, Nataliya N
Format Journal Article
LanguageRussian
Published Krasnoyarsk Siberian Federal University 01.01.2017
Subjects
Biogeochemistry
Bottom sediments
Chemical analysis
Coastal zone
Deposition
Ecosystems
Half-life
Impact analysis
Marine ecosystems
Migration
Migrations
Parameters
Plutonium
Properties
Purification
Radioisotopes
Radionuclide kinetics
Scales
Sea surface
Seawater
Sediment
Sedimentation
Sediments
Self-purification
Spatial analysis
Surface water
Suspended matter
Temperature (air-sea)
Trophic levels
Water analysis
Water purification
Black Sea
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Summary:The comparative analysis of an impact of the trophic level on the redistribution of plutonium radionuclides in marine ecosystems at different spatial scales was carried out for semi-closed coastal areas, the western part of the Black Sea, open areas of the Black and Mediterranean seas. The quantitative characteristics of radioecological processes of the sedimentation of ^sup 239+240^Pu radionuclides in bottom sediments in the coastal and open areas of the Black Sea, as well as effective half-life of ^sup 239+240^Pu in the Black Sea surface waters were determined. It was shown that an increase in water trophic level, causing an increase of the suspended matter concentration and sedimentation rate, played a significant role in the redistribution of ^sup 239+240^Pu. There was a strengthening of plutonium pedotrophic properties and increase the rate of self-purification of the Black Sea surface water regarding the plutonium radionuclides by their redistribution into the bottom sediments. Trophic level of sea waters affected the values of the radioecological parameters of the ^sup 239+240^Pu migration at studied areas, the radioecological status of the sea in the basin regarding the radionuclides of plutonium, and biogeochemical type of Pu behavior in the seas.
ISSN:1997-1389
2313-5530
DOI:10.17516/1997-1389-0005