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RECORD NUMBER: 13 OF 107

OLS Field Name OLS Field Data
Main Title Biodegradation of Organic Substrates Under Arctic and Subarctic Conditions.
Author Murra, Ann P. ; Murph, R. Sage ;
CORP Author Alaska Univ., College. Inst. of Water Resources.
Year Published 1972
Report Number IWR-20; OWRR-A-014-ALAS; 13822,; OWRR-A-014-ALAS(1)
Stock Number PB-211 999
Additional Subjects ( Organic wastes ; Arctic regions) ; ( Biodeterioration ; Organic wastes) ; ( Microorganisms ; Arctic regions) ; Cellulose ; Soil microbiology ; Metabolism ; Low temperature research ; Lakes ; Streams ; Sewage ; Psychrophiles
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB-211 999 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 63p
Abstract
Incubation of sub-arctic soil and water microorganisms in the psychrophilic temperature range hindered neither growth nor efficiency of substrate utilization in batch systems. Nevertheless, no direct relationship was observed between the temperature of incubation and kinetic constants. However, the initial food:microorganism ratio appeared to have more influence on the cell growth rate than did any variation in temperature. Values obtained for the reaction rate coefficients for oxygen consumption in sub-arctic waters indicated no special oxygen requirement for the decomposition of sewage in these waters at low temperatures. Here again temperature seemed to have less of an effect on the rate of oxygen depletion by indigenous microorganisms than did the amount of nutrient present. Initial availability of nutrients was also seen to be important in the bacterial decomposition of cellulose. Cellulolysis was found to be difficult to initiate in a well-mixed, aqueous environment in which no supplemental carbon and energy source was present.