Terminal electron transport system (ETS)-activity in the sediment of Lake Balaton, Hungary

L. G.-Tóth., Zs Langó, J. Padisák, E. Varga

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Terminal electron transport system (ETS)-activity of the sediment and plankton of Lake Balaton, the largest shallow lake of Central Europe was measured by tetrazolium-reduction biweekly during 1989-1990 and in the spring of 1991. Sediment proved to be enzymatically active to 30-35 cm down in the hypertrophic Keszthely Bay and to 15-20 cm down in the meso-eutrophic Siófok Basin. Sediment ETS-activity exceeded planktonic activity 15 to 24 fold. The total activity m-2 showed one or two order of magnitude higher respiratory potential in Lake Balaton than needed for complete oxidation of the planktonic primary production; most of this potential was detected in the upper 3-5 cm sediment layer in springs. Incubations of cell-free homogenates of sediment bacteria showed that ETS remains active days after death of organisms at low temperature. Accumulated postmortem ETS-activity derived from the benthic diatoms, bacteria, plankton deposit and dead summer macrophytes seems to be responsible for the high ETS-activity of the sediment in the warming periods in springs. These enzyme fractions may contribute to the rapid oxidation of the alkaline, well-aerated lake.

Original languageEnglish
Pages (from-to)129-139
Number of pages11
JournalHydrobiologia
Volume281
Issue number3
DOIs
Publication statusPublished - Apr 1994

Fingerprint

Hungary
electron transfer
Lakes
Sediments
lakes
electron
sediments
lake
sediment
Plankton
plankton
Bacteria
oxidation
Oxidation
bacterium
Bacillariophyceae
tetrazolium
bacteria
macrophytes
Central European region

Keywords

  • decomposition
  • postmortem ETS-activity
  • sediment algae
  • sediment bacteria

ASJC Scopus subject areas

  • Water Science and Technology
  • Pollution
  • Environmental Science(all)
  • Oceanography
  • Aquatic Science

Cite this

Terminal electron transport system (ETS)-activity in the sediment of Lake Balaton, Hungary. / G.-Tóth., L.; Langó, Zs; Padisák, J.; Varga, E.

In: Hydrobiologia, Vol. 281, No. 3, 04.1994, p. 129-139.

Research output: Contribution to journalArticle

G.-Tóth., L. ; Langó, Zs ; Padisák, J. ; Varga, E. / Terminal electron transport system (ETS)-activity in the sediment of Lake Balaton, Hungary. In: Hydrobiologia. 1994 ; Vol. 281, No. 3. pp. 129-139.
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