Urea as a nitrogen source for the phytop
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S. Kristiansen
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Article
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1983
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Springer-Verlag
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English
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Ambient concentrations of urea in the inner Oslofjjord, Norway, showed a pronounced yearly cycle in 1980, with values in the range 0.1 to 10.0ktg-atNl-1; this cycle resembled that of ammonia although urea concentrations were usually lower. The uptake of urea by phytoplankton was investigated using l