Publication Date:
2022-02-18
Description:
With a view to studying the distribution of total phosphorus in the Baltic 240 sea water samples were taken in August 1956 along a section from Helsinki to Kiel and analysed for their content of total P by the method of KALLE. The distribution of total P allows a separation of deep water, rich in P (maximum 131 mg/m3) reaching up to the lower 2°-thermocline, an intermediate water layer from 60-30 m with partly extrem low figures of P down to o and a surface layer, reaching to the upper thermocline with figures up to 43 mg/m3. This general state is superposcd by a heterogenity, caused mainly by biological effects. The low figures in the intermediate layer are closely accompanied by very low temperatures and a high content of Oxygen. This minimum in total P is probably caused by the vernal plankton bloom, followed by the hydrographically caused isolation from the trophogeneous zone and consequential sedimentation
of particulate P into the decp water, where total mineralisation takes place.
Type:
Article
,
NonPeerReviewed
Format:
text
Permalink
