When an aquatic biological system approaches a steady state the distribution of dissolved inorganic phosphorus (DIP), particulate phosphorus (PP), and dissolved organic phosphorus (DOP) may be dealt with as though it were the result of the equilibrium of a chemical exchange system. The standing stock and rate of exchange has been determined for coastal water collected during late summer from a site near Halifax, N. S.: urn:x-wiley:00129658:media:lno1963820276:lno1963820276-math-0001 DOP is derived from dead and dying organisms in the water and is taken up and metabolized by bacteria which release DIP. There is no direct breakdown from DOP to DIP; filtered sea water showed no evidence of phosphatase activity. DOP labelled with P 32 was resolved by paper chromatography into 6 components.
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Watt et al. (1963) studied this question.
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