Long-term trends and speciation of artificial radionuclides in two submerged macrophytes of the Yenisei River: A comparative study of Potamogeton lucens and Fontinalis antipyretica

2021 ◽  
Vol 227 ◽  
pp. 106461
Author(s):  
Tatiana Zotina ◽  
Dmitry Dementyev ◽  
Yuliyana Alexandrova
Keyword(s):  
Comparative Study ◽  
Submerged Macrophytes ◽  
Yenisei River ◽  
Fontinalis Antipyretica ◽  
Artificial Radionuclides ◽  
Long Term Trends ◽  
The Yenisei River

Water moss as a food item of the zoobenthos in the Yenisei River

2011 ◽  
Vol 6 (2) ◽  
pp. 236-245 ◽  
Author(s):  
Galina Kalachova ◽  
Michail Gladyshev ◽  
Nadezhda Sushchik ◽  
Olesia Makhutova
Keyword(s):  
Organic Matter ◽  
Yenisei River ◽  
Fontinalis Antipyretica ◽  
Supplemental Food ◽  
Epilithic Biofilms ◽  
The Yenisei River ◽  
Main Food Source ◽  
A Minor ◽  
Acetylenic Acids ◽  
Isotope Analyses

AbstractBryophytes are abundant in streams and are a habitat for many invertebrates, but their contribution to the diet of fluvial zoobenthos is still debated. To estimate the amount of bryophyte-derived organic matter assimilated by benthic invertebrates, we used a combination of fatty acid and stable isotope analyses during a four-year monthly study of a littoral site in the Yenisei River (Siberia, Russia). Acetylenic acids, which are highly specific biomarkers of the water moss Fontinalis antipyretica, were found in lipids of all dominant benthic animals: gammarids, ephemeropterans, chironomids and trichopterans. The dominant zoobenthic species, Eulimnogammarus viridis, had maximum levels of the biomarkers in its biomass during winter, and minimum levels in summer. The zoobenthos in the studied site regularly consume and assimilate bryophyte-derived organic matter as a minor supplemental food. This consumption increases in winter, when the main food source of the zoobenthos, epilithic biofilms, are probably scarce.

Seasonal dynamics of fatty acids in the lipids of water moss Fontinalis antipyretica from the Yenisei River

2009 ◽  
Vol 56 (6) ◽  
pp. 795-807 ◽  
Author(s):  
G. S. Kalacheva ◽  
N. N. Sushchik ◽  
M. I. Gladyshev ◽  
O. N. Makhutova
Keyword(s):  
Fatty Acids ◽  
Seasonal Dynamics ◽  
Yenisei River ◽  
Fontinalis Antipyretica ◽  
The Yenisei River
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