Mobility of phosphorus fractions in the sediments of Lake Balaton

Sándor Herodek, Vera Istvánovics

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Sediment phosporus was studied by a combination of the fractionation procedure of Hieltjes & Lijklema and the isotopic dilution technique in a mesotrophic (Tihany) and a hypertrophic (Keszthely) basin of Lake Balaton. In the calcareous sediments the largest part of phosphorus was bound to calcium. Iron-bound and residual P showed higher concentrations at Keszthely than at Tihany. There was little loosely adsorbed P at both locations. Vertical differences in P fractions of the sediments were more pronounced at Keszthely than at Tihany. Exchangeability of the fractions decreased in the following sequence: iron-bound > loosely adsorbed > calcium-bound > residual. Phosphorus, particularly in the calcium-bound fraction, was more mobile at Keszthely, and its exchangeability decreased rapidly downwards at both stations. Four times more potentially mobile phosphorus has been accumulated by the upper sediment layer at Keszthely than at Tihany.

Original languageEnglish
Pages (from-to)149-154
Number of pages6
JournalHydrobiologia
Volume135
Issue number1-2
DOIs
Publication statusPublished - Apr 1 1986

Keywords

  • Lake Balaton
  • P
  • eutrophication
  • isotopic dilution
  • pore water
  • sediment phosporus

ASJC Scopus subject areas

  • Aquatic Science

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