| Autor: |
Bikbulatov, E. S., Dzyuban, A. N., Bikbulatova, E. M. |
| Předmět: |
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| Zdroj: |
Water Resources; Jul/Aug2002, Vol. 29 Issue 4, p422-428, 7p |
| Abstrakt: |
Experiments were conducted to study the microbial co-oxidation of naturally structured humic substances in different water bodies at different glucose concentrations. At low buffer capacity of aquatic ecosystems, the initial stages of the process are shown to be accompanied by a considerable increase in the medium acidity, a decrease in its alkalinity, and accumulation of colored intermediate products of bacterial and enzymatic synthesis. It is found that the co-metabolism processes with highly labile compounds either do not play any significant role in the trophodynamics of aquatic ecosystems (<10% of the original humic material is co-oxidized) or are not detected, notwithstanding the sufficient sensitivity of the analytical techniques involved. The low degree of co-oxidation (or its virtual absence) are found to be attributable to the masking effect of intermediate products. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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