Dissolved organic matter release and retention in an alkaline soil from the Nile River Delta in relation to surface charge and electrolyte type

Geoderma ◽  
2010 ◽  
Vol 158 (3-4) ◽  
pp. 385-391 ◽  
Author(s):  
Mohamed Rashad ◽  
Stefan Dultz ◽  
Georg Guggenberger
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Surface Charge ◽  
River Delta ◽  
Nile River ◽  
Alkaline Soil

scholarly journals From Fresh to Marine Waters: Characterization and Fate of Dissolved Organic Matter in the Lena River Delta Region, Siberia

2015 ◽  
Vol 2 ◽  
Author(s):  
Rafael Gonçalves-Araujo ◽  
Colin A. Stedmon ◽  
Birgit Heim ◽  
Ivan Dubinenkov ◽  
Alexandra Kraberg ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
River Delta ◽  
Delta Region ◽  
Marine Waters ◽  
Lena River ◽  
Lena River Delta

scholarly journals Coloured dissolved organic matter in aquatic ecosystems of three representative regions of the Arctic according to the data obtained in year 2019

2020 ◽  
Vol 163 ◽  
pp. 04006
Author(s):  
Anastasiia Pashovkina ◽  
Irina Fedorova
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Kola Peninsula ◽  
Aquatic Ecosystems ◽  
River Delta ◽  
The Arctic ◽  
Yamal Peninsula ◽  
Lena River ◽  
Lena River Delta ◽  
The Yamal Peninsula

In this study the laboratory analysis of water samples from three representative regions of the Arctic for content of coloured dissolved organic matter (CDOM) – the important component of natural waters, which has a direct impact on state of aquatic ecosystems, was made. Samples were collected from water objects from the Kola Peninsula, the Yamal Peninsula and the Lena River Delta. The results of the analysis made it possible to determine CDOM concentrations in water. According to the average values, the highest values were obtained for the Yamal Peninsula and lowest – for the Kola Peninsula. The predominance of allochthonous CDOM in the water objects from all three regions was revealed. Moreover, the complete absence of photodegradation processes was determined. For the lakes and rivers from the Kola Peninsula it was also possible to follow seasonal dynamic of CDOM concentration in water and to compare it with earlier obtained data concerning seasonal CDOM dynamic in the Lena River Delta. Results are actual due to the currently existing tendency of climate change which leads to intensification of thermal denudation and thermal erosion processes in the cryolithozone, which are consequently increasing income of allochthonous CDOM in water objects.

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