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1 Oceanological Studies

1 1998

1 Mudryk Z.

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Occurrence and distribution of bacteria decomposing organic phosphorus compounds in the surface seawater layers

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Mudryk Z.

Oceanological Studies

1998

tom Vol. 27, No. 3

45-55

The ability of neustonic and planktonic bacteria inhabiting the Gdańsk Deep to decompose organie forms of phosphorus was studied. It was found that bacteria hydrolysed phytin and DNA most actively, while only smali percentage of bacterial strains studied was able to depolymerize glycero-phosphate. Significant differences in the intensity of minerahzation of organie phosphorus compounds between ncustonic and planktonic bacteria were observed. This process was characterised by consid-erable diel fluctuations. It was also found that in the microlayer, the activity of alkaline phosphatase was higher than of acid phosphatase.