FEATURES OF SELENIUM ACCUMULATION BY THE PLANTS OF FRESHWATER ECOSYSTEMS IN MOLDOVA
Abstract
The results of investigation on selenium accumulation by the plants of freshwater ecosystems in Moldova are presented in the first time. Elevated concentrations of this trace element in surface waters ranging from 0.20-6.09 pg/L were observed. Selenium concentrations in plants were defined for some ecological groups such as algae, hydrophytes, helophytes and water-side plants. It was found that selenium contents in plants were ranged from 19 to 2917 pg/ kg (dry weight) and higher than selenium concentrations in water more than 3740 times. Ecosystem differences in selenium accumulation by plants and differences within ecological groups were observed. The most significant concentration differences within some plant species particularly in algae and hydrophytes were found. Average selenium concentrations (pg/kg dry weight) increased in the series of plant’s ecological groups: water-side plants (139) < helophytes (182) < algae (532) < hydrophytes (855).
About the Authors
M. . Kapitalchuk
Taras Shevchenko Transdniestrian State University
Russian Federation
Russian Federation
N. . Golubkina
All-Russian Scientific Research Institute of Breeding and Vegetable Seed Culture
Russian Federation
Russian Federation
S. . Sheshnitsan
Taras Shevchenko Transdniestrian State University
Russian Federation
Russian Federation
I. . Kapitalchuk
Taras Shevchenko Transdniestrian State University
Russian Federation
Russian Federation
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