Articles

Title:	Microbial efficiency in a meromictic reservoir
Authors:	Wilk-Woźniak Elżbieta Mazurkiewicz-Boroń Grażyna Bednarz Teresa
Abstract:	Indices of microbial efficiency (expressed as oxygen consumption and carbon dioxide release) were determined in the water column of the meromictic Piaseczno Reservoir (in an opencast sulphur mine), which is rich in sulphur compounds. Phytoplankton abundances were low in both the mixolimnion (up to 15 m depth) and monimolimnion (below 15 m depth). In summer and winter, carbon dioxide release was 3-fold and 5-fold higher, respectively, in the monimolimnion than in the mixolimnion. Laboratory enrichments of the sulphur substrate of the water resulted in a decrease in oxygen consumption rate of by about 42% in mixolimnion samples, and in the carbon dioxide release rate by about 69% in monimolimnion samples. Water temperature, pH and bivalent ion contents were of major importance in shaping the microbial metabolic efficiency in the mixolimnion, whilst in the monimolimnion these relationships were not evident.
DOI:	10.2478/v10009-007-0047-9
Type of paper:	Original research paper
Pages:	3 to 19
Cytation:	Mazurkiewicz-Boroń G., Bednarz T., Wilk-Woźniak E., 2008, Microbial efficiency in a meromictic reservoir, Ocean. Hydrob. Studies, 37(2): 3-19, DOI 10.2478/v10009-007-0047-9
Keywords:	mixolimnion, monimolimnion, oxygen uptake, carbon dioxide release, phytoplankton
Year:	2008
Category:
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