Stratification analysis of the Óhalász Ox-bow of the River Tisza (Kisköre Reservoir, Hungary)

Mariann Teszárné Nagy, K. Márialigeti, Péter Végvári, Eduárd Csépes, István Bancsi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Vertical samplings of the Óhalász Ox-bow of the River Tisza situated within the Kisköre Reservoir were carried out on 6 occasions during 2000-2002 from different depths of the open water above the deepest point of the riverbed. The possible formation of a discontinuity layer was studied. Beside the measurements of physical and chemical water parameters the quantitative estimation of the microorganisms taking part in the transformation of inorganic and organic materials was performed. Although the greatest depth of the former river course is just 5 m, a summer stratification was typical as was proved by in-situ measurements and laboratory analyses: an anaerobic water body was formed under 2-2.5 m depth. The discontinuity layer was clearly proved by an intensive peak in the chlorophyll level, the sulphate-sulphide chemocline, an abrupt dropping of the water-temperature, etc. Interesting was also the dominance of phototrophs again in the deeper anoxic water masses, near the bottom.

Original languageEnglish
Pages (from-to)37-44
Number of pages8
JournalHydrobiologia
Volume506-509
DOIs
Publication statusPublished - Nov 15 2003

Fingerprint

oxen
discontinuity layer
Hungary
stratification
rivers
river
water
autotrophs
stream channels
sulfides
open water
in situ measurement
water mass
body water
sulfates
chlorophyll
water temperature
microorganism
sulfide
sulfate

Keywords

  • Chemocline
  • Chlorophyll-a
  • Cyanobacteria
  • Discontinuity layer
  • Green sulphur-bacteria
  • Shallow lake

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Stratification analysis of the Óhalász Ox-bow of the River Tisza (Kisköre Reservoir, Hungary). / Nagy, Mariann Teszárné; Márialigeti, K.; Végvári, Péter; Csépes, Eduárd; Bancsi, István.

In: Hydrobiologia, Vol. 506-509, 15.11.2003, p. 37-44.

Research output: Contribution to journalArticle

Nagy, Mariann Teszárné ; Márialigeti, K. ; Végvári, Péter ; Csépes, Eduárd ; Bancsi, István. / Stratification analysis of the Óhalász Ox-bow of the River Tisza (Kisköre Reservoir, Hungary). In: Hydrobiologia. 2003 ; Vol. 506-509. pp. 37-44.
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