Record Display for the EPA National Library Catalog

RECORD NUMBER: 254 OF 846

OLS Field Name OLS Field Data
Main Title Design and Preliminary Results from Soil/Litter Microcosms.
Author Lighthart, B. ; Bond, H. ;
CORP Author Corvallis Environmental Research Lab., OR.
Year Published 1976
Report Number EPA/600/J-76/084;
Stock Number PB-289 177
Additional Subjects Selenium ; Cadmium inorganic compounds ; Bacteria ; Fungi ; Respiration ; Cadmium inorganic compounds ; Chlorides ; Soil water ; Selenium ; Growth ; Oxygen consumption ; Carbon dioxide ; Decomposition reactions ; Experimental data ; Design plant metabolism ; Reprints ; Air pollution effects(Plants) ; Air pollution effects(Animals)
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB-289 177 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 10p
Abstract
Soil/litter microcosms with 'life support' systems were designed to maintain and monitor oxygen consumption, and community carbon dioxide and heat generation over extended time intervals. Mean coefficient of variation for oxygen consumption and carbon dioxide generation rates replicate processed systems was 6.5 percent. An initial adjustment period of rapid respiratory rates and bacterial growth was observed for 10-14 days after microcosm preparation and incubation at 20C. Soil and litter moisture had marked and expected effects on community respiration. Conditions of high moisture favored bacteria; fungi were more prevalant under low moisture conditions. Cadmium treatment of microcosms effected initial stimulation of respiration at 0.01 ppm CdC12 and a delayed reduction (40 percent) of respiration at 10 ppm CdC12. The combination of selenium plus cadmium caused more than an added inhibition of respiration. Numbers of bacteria and fungi showed no detectable cadmium treatment effects.