Portable soil respiration system.(PRODUCT NEWS)

Laboratory Equipment;  November 1, 2006 ;     105 words ...The SRS2000 soil respiration system enables researchers to analyze short-term soil microbial...device comprises a control console and specially designed soil respiration chamber with an integral C[O.sub.2] and [H.sub.2]O analysis...

INTERACTIVE EFFECTS OF ATMOSPHERIC [CO.sub.2] AND SOIL-N AVAILABILITY ON...

Ecological Applications;  February 1, 2000 ;     700+ words ......relationship between root biomass and total soil respiration. Over 80% of the absorbing root length...soil cores; r = 0.975). Mean rates of soil respiration were more than double in high-N compared...CO.sub.2], increased mean rates of soil respiration 19% in 1995 and 25% in 1996. ...

A global trend in belowground carbon allocation: comment. (response to...

Ecology;  July 1, 1998 ;     700+ words ......expressed as TRCA [approximately equal to] soil respiration - litterfall + export + [Delta][C...per square meter per year and where soil respiration is C[O.sub.2]-C released from the...relative to C fluxes in litterfall and soil respiration. The published statistical model is...

Soil microbial activity and mycorrhizal associations in a Southern...

Bulletin (Southern California Academy of Sciences);  August 1, 2002 ;     212 words ......community. The first method used was soil respiration--the rate of [CO.sub.2] efflux from the soil. While soil respiration is a rather general indicator...biological activity. Measurements of soil respiration were conducted using a closed...

Carbon rising: Measuring CO(2) fluxes from the soil

Green Teacher;  July 1, 2002 ;     672 words ...Measuring soil respiration familiarizes students with an...the production of CO2 through soil respiration. It can also be used to demonstrate...fluxes from soils. Background Soil respiration is defined as the production...

Soil organic matter dynamics along gradients in temperature and land use...

Ecology;  April 1, 1995 ;     700+ words ......that C[O.sub.2] efflux from soils (soil respiration) is dominated by decomposition of...analyses of the relationship between soil respiration and environmental variables such as...C[O.sub.2] (Schimel et al. 1994), soil respiration dynamics may differ from the dynamics...

Mushrooms may slow global warming.(Features)(Ideas)

The Christian Science Monitor;  October 11, 2001 ;     640 words ......into the atmosphere of carbon in soil, a process known as soil respiration. Respiration from plants and soils sits opposite plant...out in the 1997 Kyoto Protocols. Down at the root level, soil respiration pumps up to 14 times as much CO2 into the atmosphere each...

STORIES OF MODERN SCIENCE ... FROM UPI

United Press International;  October 11, 2001 ;     624 words ......that assumption: in tests of grassland plots, they found that soil respiration does not increase as much as expected under an artificially increased temperature. Soil respiration is an important contributor to global carbon cycling, so that...

Microbial C[O.sub.2] production from surface and subsurface soil as...

Australian Journal of Soil Research;  May 1, 2008 ;     700+ words ......have shown that N input increased soil respiration and suggested that the stimulatory...organic C decomposition and suppress soil respiration, resulting in an increase in SOC...studies have examined the response of soil respiration on N addition in subsurface soils...

New test traces underground forest carbon.(indication that tree root...

Science News;  June 16, 2001 ;     422 words ......Agricultural Sciences in Umea. Most soil-respiration models ignore that factor, he adds...researchers girdled trees early in June, soil respiration started dropping fast and within 7...researchers girdled trees in August, soil respiration dropped faster, sinking to 44 percent...

Soil Biological Activity as Influenced by Green Waste Compost and Cattle...

Compost Science & Utilization;  January 1, 2006 ;     700+ words ......showed a decreasing efficiency of soil respiration, particularly at the highest addition...soil biochemical parameters such as soil respiration, and enzyme activities have been seen...forest soils, reported an increase in soil respiration. Enzyme activities in soil were found...

Effect of MSW compost on microbiological and biochemical soil quality...

Compost Science & Utilization;  July 1, 2003 ;     700+ words ......Microbial biomass-C (MBC), glucose induced soil respiration (SR), urease and acid phosphatase...microbial biomass carbon, glucose induced soil respiration, urease and phosphatase activities...sub EC^ = 0.38 (Joergensen 1995). Soil respiration was determined by glucose induced...

Nitrogen contributions in a windmill grass (Chloris truncata)--wheat...

Australian Journal of Soil Research;  December 1, 2007 ;     700+ words ......this work were to determine (i) soil inorganic nitrogen, soil respiration, and biomass production of C. truncata compared with bare...stems, roots, or stems + roots) on soil inorganic nitrogen, soil respiration, N-uptake, and biomass production of wheat; and (iii) the...

Microbial activity of Cu contaminated soils and effect of lime and compost...

Compost Science & Utilization;  October 1, 2001 ;     700+ words ......added. By this treatment, the basal soil respiration (755%) and decomposition of added...fungi < biomass-C < basal soil respiration < bacteria < streptomycetes...soil (pH< 6.0) - fungi < basal soil respiration < biomass-C < bacteria <...

CO2 flux measurement using soda lime: correction for water formed during...

Ecology;  June 1, 1998 ;     700+ words ......to have applications for in situ field measurements of soil respiration. Protocols for its use are described in most major soils...1994). Furthermore, the technique has been used to report soil respiration fluxes in at least 12 studies in major ecological journals...