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Influence of temperature and river discharge on water quality of the Western Scheldt estuary
Somville, M.; De Pauw, N. (1982). Influence of temperature and river discharge on water quality of the Western Scheldt estuary. Wat. Res. 16(8): 1349-1356. http://dx.doi.org/10.1016/0043-1354(82)90213-5
Peer reviewed article  

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Keywords
    Chemical compounds > Nitrogen compounds > Ammonia
    Chemical elements > Nonmetals > Atmospheric gases > Oxygen
    Chemical reactions > Nitrification
    Inflow > River discharge
    Properties > Physical properties > Thermodynamic properties > Temperature
    Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries
    Water quality
    Belgium, Zeeschelde [Marine Regions]
    Marine/Coastal; Brackish water

Authors  Top 
  • Somville, M.
  • De Pauw, N., more

Abstract
    Dissolved oxygen concentrations and information on the nitrification process collected respectively during a 14- and a 5-year period in the self-purifying part of the Western Scheldt estuary have been studied. In the polluted part of the stream, ammonium concentrations over the period 1967-1977 have been considered as well. This paper demonstrates the high variability of these three parameters (oxygen, start of the nitrification process, ammonium) owing to the hydrological conditions: temperature and river discharge. Neither the levels of ammonium in the polluted upper part of the stream, nor the concentrations of nitrate and dissolved oxygen in the recuperation part of the Scheldt estuary have been changed significantly during the periods studied (respectively 5, 10 and 14 years). A relation between these parameters and time could be hidden by hydrological factors. Water quality of a stream can be assessed by interpreting oxygen, nitrate and ammonium concentrations, only if all environmental and hydrodynamical parameters are known simultaneously.

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