scholarly journals Benthic algae control sediment-water column fluxes of organic and inorganic nitrogen compounds in a temperate lagoon

2003 ◽  
Vol 48 (6) ◽  
pp. 2125-2137 ◽  
Author(s):  
Anna Christina Tyler ◽  
Karen J. McGlathery ◽  
Iris C. Anderson
Keyword(s):  
Water Column ◽  
Inorganic Nitrogen ◽  
Benthic Algae ◽  
Nitrogen Compounds ◽  
Control Sediment ◽  
Algae Control ◽  
Temperate Lagoon

Assimilation of Inorganic Nitrogen Compounds by Nitrobacter agilis

Microbiology ◽  
1982 ◽  
Vol 128 (8) ◽  
pp. 1795-1801
Author(s):  
S. Kumar ◽  
D. J. D. Nicholas
Keyword(s):  
Inorganic Nitrogen ◽  
Nitrogen Compounds ◽  
Nitrobacter Agilis

Porewater chemistry of inorganic nitrogen compounds in the eastern Skagerrak (NE North Sea)

Hydrobiologia ◽  
1990 ◽  
Vol 207 (1) ◽  
pp. 179-186 ◽  
Author(s):  
M. Wilken ◽  
K. K. Anton ◽  
G. Liebezeit
Keyword(s):  
North Sea ◽  
Inorganic Nitrogen ◽  
Nitrogen Compounds ◽  
Porewater Chemistry

scholarly journals Distribution of inorganic nitrogen compounds in purification of storm wastewater of the engine-building manufactory

2020 ◽  
pp. 112-118
Author(s):  
K.O. Dombrovskyi ◽  
O.F. Rylskyi ◽  
P.I. Gvozdiak ◽  
O.V. Sherstoboieva ◽  
Yu.Yu. Petrusha
Keyword(s):  
Inorganic Nitrogen ◽  
Nitrogen Compounds

scholarly journals Suspended Particular Matter drives the spatial segregation of nitrogen turnover along the hyper-turbid Ems estuary

2021 ◽  
Author(s):  
Gesa Schulz ◽  
Tina Sanders ◽  
Justus E. E. van Beusekom ◽  
Yoana G. Voynova ◽  
Andreas Schöl ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Nitrous Oxide ◽  
Water Column ◽  
Anthropogenic Activities ◽  
Inorganic Nitrogen ◽  
Nitrate Removal ◽  
Tidal River ◽  
Nutrient Loads ◽  
Ems Estuary ◽  
Nitrogen Turnover

Abstract. Estuaries are nutrient filters and change riverine nutrient loads before they reach coastal oceans. They have been extensively changed by anthropogenic activities like draining, deepening, and dredging to meet economic and social demand, causing significant regime changes like tidal amplifications and in some cases to hyper-turbid conditions. Furthermore, increased nutrient loads, especially nitrogen, mainly by agriculture cause coastal eutrophication. Estuaries can either act as a sink or as a source of nitrate, depending on environmental and geomorphological conditions. These factors vary along an estuary, and change nitrogen turnover in the system. Here, we investigate the factors controlling nitrogen turnover in the hyper-turbid Ems estuary (Northern Germany) that has been strongly impacted by human activities. During two research cruises in August 2014 and June 2020, we measured water column properties, dissolved inorganic nitrogen, dual stable isotopes of nitrate and dissolved nitrous oxide concentration along the estuary. Overall, the Ems estuary acts as a nitrate sink in both years. However, three distinct biogeochemical zones exist along the estuary. A strong fractionation (~ 26 ‰) of nitrate stable isotopes points towards nitrate removal via water column denitrification in the hyper-turbid Tidal River, driven by anoxic conditions in deeper water layers. In the Middle Reaches of the estuary nitrification gains in importance turning this section into a net nitrate source. The Outer Reaches are dominated by mixing with nitrate uptake in 2020. We find that the overarching control on biogeochemical nitrogen cycling, zonation and nitrous oxide production in the Ems estuary is exerted by suspended particulate matter concentrations and the linked oxygen deficits.

Oxidation of Inorganic Nitrogen Compounds as an Energy Source

2013 ◽  
pp. 83-118 ◽  
Author(s):  
Eberhard Bock ◽  
Michael Wagner
Keyword(s):  
Energy Source ◽  
Inorganic Nitrogen ◽  
Nitrogen Compounds

Peculiarities of Physiological-biochemical Interrelations in Symbiotic Communities of Freshwater Fishes under the Impact of Inorganic Nitrogen Compounds

2015 ◽  
Vol 51 (4) ◽  
pp. 57-66
Author(s):  
V. D. Romanenko ◽  
V. I. Yuryshynets' ◽  
O. S. Potrokhov ◽  
O. G. Zin'kovskiy
Keyword(s):  
Inorganic Nitrogen ◽  
Freshwater Fishes ◽  
Nitrogen Compounds ◽  
The Impact
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