Nutrient emissions from diffuse and point sources into the River Danube and its main tributaries for the period of 1998-2000--results and problems

Nutrient emissions by point and diffuse sources were estimated for 388 sub-catchments of the Danube river basin for the period 1998-2000 by means of the Model MONERIS. For nitrogen total emissions of 684 kt/a N were estimated for the Danube basin. 80% of these emissions were caused by diffuse source...

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Bibliographic Details
Published in:Water science and technology 2005-01, Vol.51 (3-4), p.283-290
Main Authors: Schreiber, H, Behrendt, H, Constantinescu, L T, Cvitanic, I, Drumea, D, Jabucar, D, Juran, S, Pataki, B, Snishko, S, Zessner, M
Format: Article
Language:English
Subjects:
Catchment area
Catchments
Conservation of Natural Resources
Emission
Emission measurements
Emissions
Environmental Monitoring
Europe
Freshwater
Groundwater
Mineral nutrients
Models, Theoretical
Nitrogen
Nitrogen - analysis
Nutrient sources
Phosphorus
Phosphorus - analysis
Point source pollution
Reproducibility of Results
River basins
Rivers
Rivers - chemistry
Spatial discrimination
Spatial resolution
Tile drainage
Tributaries
Urban areas
Water Movements
Water Pollutants, Chemical - analysis
Water Supply
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Summary:Nutrient emissions by point and diffuse sources were estimated for 388 sub-catchments of the Danube river basin for the period 1998-2000 by means of the Model MONERIS. For nitrogen total emissions of 684 kt/a N were estimated for the Danube basin. 80% of these emissions were caused by diffuse sources (mainly groundwater, urban areas and tile drainage). For phosphorus the emission was 57 kt/a P, with a contribution of diffuse sources to this sum of 58%. The comparison of calculated and observed loads shows that the mean deviation for the investigated sub-catchments of the Danube river basin is 20% for dissolved inorganic nitrogen and 34% for phosphorus. The spatial resolution of the emission calculations allows the identification of regional hot spots and the derivation of specific regional measures to reduce the emissions into the Danube and consequently into the Western Black Sea.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2005.0602