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Phosphorus in sediments from coastal waters of Mecklenburg-Vorpommern (southern Baltic Sea)
Berghoff, S.; Schlungbaum, G.; Selig, U. (2000). Phosphorus in sediments from coastal waters of Mecklenburg-Vorpommern (southern Baltic Sea), in: Flemming, B.W. et al. (Ed.) Muddy coast dynamics and resource management. Proceedings in Marine Science, 2: pp. 161-173
In: Flemming, B.W.; Delafontaine, M.T.; Liebezeit, G. (Ed.) (2000). Muddy coast dynamics and resource management. Proceedings in Marine Science, 2. Elsevier: Amsterdam. ISBN 0-444-50464-8. 294 pp., more
In: Proceedings in Marine Science. Elsevier: New York. ISSN 1568-2692, more
Peer reviewed article  

Available in  Authors 
    VLIZ: Dynamical Oceanography [6348]

Keyword
    Marine

Authors  Top 
  • Berghoff, S.
  • Schlungbaum, G.
  • Selig, U.

Abstract
    The aim of this study was to investigate the seasonal and spatial gradients in the contents of phosphorus and its bound forms in sediments of the Rassower Strom and the Kirr-Bucht (southern Baltic Sea). Sediment cores were collected in summer and autumn in 1996, and they were cut into layers 1 cm thick. With 9-11 g P / m², the Kirr-Bucht showed a generally larger phosphorus pool. In overlaying waters, the effective phosphorus potential depends on the content of phosphorus as well as biochemical activity and sediment mobility. Biochemical reactivity was assessed by phosphorus fractionation in the present study. The contents of phosphorus easily available to algae were very low, with values of only 1 % being recorded at both study sites. The phosphorus potentially available to algae in the Rassower Strom decreased from about 40% at the surface to 15-20% of total phosphorus at a depth of 10 cm. In the Kirr-Bucht, the values were 30-50% at the surface, and 7-14% of total phosphorus at a depth of 10 cm. Pore-water analyses show that, in the Rassower Strom, orthophosphate and total dissolved phosphorus concentrations were 10 times higher than values recorded in the Kirr-Bucht. The exchange between the pore water and the overlying water was characterized by sediment resuspension at these study sites.

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