Studies of the physico-chemical conditions of the sediment-water interface in Lokka and Porttipahta reservoirs

Seppo Hellsten, Tero Väisänen

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

The physico-chemical conditions of the sediment-water interface in the Lokka and Porttipahta reservoirs in Northern Finland were investigated. Oxygen concentration was measured from sedimented matter and the bottom sediment with a minielectrode measurement technique. The consumption of O2 was calculated by Fick's first law of diffusion across the sediment-water interface. Methane samples were sub-sampled from sediment cores and analysed with a gas Chromatograph equipped with FI-detector. The oxygen and methane concentrations correlated to the redox potentials. Methane concentration was high in organic rich sediments with low redox potential values. Oxygen coasumption was higher in Lokka.
Original languageEnglish
Pages (from-to)215-218
JournalInternational Review of Hydrobiology
Volume83
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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