Transformations and release of phosphorus forms at the sediment-water interface in the Pomeranian Bay (southern Baltic)

• Autorzy: Frankowski L. , Bolałek J.
• Języki publikacji: EN

Abstrakty

EN

A laboratory chamber experiment was carried out to estimate the release of phosphate from sediments to water. The phosphate thus released originated almost exclusively from the mineralisation of organic matter. Since the release took place between the fifth and the tenth day of the experiment, the compounds undergoing mineralisation were most probably proteins, aminoacids or lipids, whose decomposition times are of the order of several days to several weeks. Principal component analysis (PCA) was applied to determine the similarities and differences in the chemical composition of the surface sediments of the Pomeranian Bay. The study area can be divided into three subregions based on PCA. The first is the estuarine region A with a distinct station located next to the Swina River estuary; the second is the central Pomeranian Bay (region B), and the third is the deep region C, with a distinct subregion in the vicinity of the Sassnitz Deep. The phosphorus flux from sediments to water was estimated at 14 x 103 t per year, but was balanced by the deposition flux of organic matter. Phosphorus deposition and release at the sediment-water interface in the Pomeranian Bay therefore play a crucial role in qualitative transformations of the phosphorus compounds, although Pomeranian Bay sediments may not be important as a source or sink of phosphorus compounds.

Słowa kluczowe

EN

organic matter deposition and transformations; phosphorus release; sediment; principal component analysis; Pomeranian Bay

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 1999
• Tom: No. 41 (3)
• Strony: 429--444
• Opis fizyczny: Bibliogr. 36 poz., tab., wykr.

Twórcy

autor

Frankowski L.

autor

Bolałek J.

• Institute of Oceanography, Gdańsk University, al. Marsz. Piłsudskiego 46, 81-378 Gdynia, Poland,

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