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Nutrients in the North Sea, September 1988 to October 1989: use of nutrient ratios and nutrient/salinity relationships to identify sources and sinks of nutrients
Hydes, D.; Edmunds, H. (1992). Nutrients in the North Sea, September 1988 to October 1989: use of nutrient ratios and nutrient/salinity relationships to identify sources and sinks of nutrients. Sci. Total Environ. (Suppl.): 1149-1157
In: Science of the Total Environment. Elsevier: Amsterdam. ISSN 0048-9697; e-ISSN 1879-1026, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Aquatic sciences > Marine sciences > Earth sciences > Oceanography > Chemical oceanography
    Chemical compounds > Nitrogen compounds > Ammonia
    Chemical compounds > Nitrogen compounds > Nitrates
    Chemical compounds > Nitrogen compounds > Nitrites
    Chemical compounds > Phosphorus compounds > Phosphates
    Chemical compounds > Silicon compounds > Silicates
    Nutrients
    Nutrients (mineral)
    Properties > Chemical properties > Salinity
    Marien/Kust
Auteurs  Top 
  • Hydes, D.
  • Edmunds, H.
Abstract
    Each month, measurements of ammonia, nitrate, nitrite, phosphate and silicate were made on a 120 station grid between 55° 30'N and the Dover Straights. Absolute concentrations were highest in the German Bight, corresponding to the low salinity of the water. The quality of the data is such that mapping the residuals from a linear regression fit to the nutrient salinity relationship shows coherent patterns that can be related to the different concentrations of nutrients in the individual rivers entering the North Sea. The Redfield ratio is only a poor approximation of the relationship between nitrate and phosphate, even in winter months. In January, in coastal areas the ratio is above 20 due to the high value in river water, while in the southern central area it is below 10.
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