measuring soil respiration Articles

  • Presentation: An oxygen sensor for continuous long-term measurement of soil respiration.

    Presentation: An oxygen sensor for continuous long-term measurement of soil ...


    By Apogee Instruments, Inc.

  • Laboratory test system to measure microbial respiration rate

    This study reports a sensible, accurate and economic method for continuous measuring microbial respiration. The measuring principle is an open system, with a continuous air-flow through. Evolved CO2 is absorbed and precipitated as carbonate by a Ba(OH)2 solution, causing a stoichiometrical decrease in ionic strength of the solution and in electrical conductivity. ...


    By Inderscience Publishers

  • Comparison of the performance of statistical models that predict soil respiration from forests

    Soil respiration (Rs) is an important source of CO2 to the atmosphere, yet understanding the processes controlling the combined autotrophic and heterotrophic components has proven challenging. Numerous statistical models have been developed to explain Rs as a function of physical and chemical conditions, but there has been little effort to systematically evaluate and compare the performance of ...

  • Lichens show that fungi can acclimate their respiration to seasonal changes in temperature

    Five species of lichens, the majority members of a soil-crust community (Cladonia convoluta, Diploschistes muscorum, Fulgensia fulgens, Lecanora muralis, Squamarina lentigera) showed seasonal changes of temperature sensitivity of their dark respiration (DR) to such an extent that several substantially met the definition of full acclimation, i.e. near identical DR under different nocturnal ...


    By Springer

  • Measurement of soil CO2 efflux under experimental warming in Northern Mongolia

    Some of the most extreme temperature increases associated with global climate change are expected to occur in northern Mongolia, and increases in both temperature and the length of the growing season are already apparent (Nandintsetseg and Goulden 2003). The ecology around Lake Hövsgöl in northern Mongolia is of special interest because taiga forest and steppe grasslands come together ...


    By PP Systems

  • Soil-mixing effects on inorganic nitrogen production and consumption in forest and shrubland soils

    Abstract Soils that are physically disturbed are often reported to show net nitrification and NO3 – loss. To investigate the response of soil N cycling rates to soil mixing, we assayed gross rates of mineralization, nitrification, NH4+ consumption, and NO3 – consumption in a suite of soils from eleven woody plant communities in Oregon, New Mexico, and Utah. Results ...


    By Springer

  • Effects of heavy metal pollution on the soil microbial activity

    The effects of heavy metals on soil microbial processes were investigated over a period of six weeks. Analytical grade (Sigma) sulphate salts of copper, zinc and nickel were added individually and in combinations to soil samples and incubated in different plastic pots. Samples were taken from the pots forthnightly and the rates of microbial carbon and nitrogen mineralization, microbial biomass ...

  • Effects of biowaste compost amendment on soil microbial biomass and specific carbon turnover in agricultural soils

    The importance of biowaste compost as organic fertilisers has become more emergent in the last years due to the increased production of compost produced from biowaste. The utilisation of organic fertilisers in agriculture improves the physical, chemical and microbial properties of soils (Allievi et al., 1993; Senesi, 1989). Amendment of compost affects several soil properties positively like e.g. ...


    By ORBIT e.V.

  • Influence of liquid manure on soil denitrifier abundance, denitrification, and nitrous oxide emissions

    The influence of liquid dairy and swine manure, soil water-extractable C (WEC) and glucose on the amount of denitrification, the N2O molar ratio [N2O/(N2O + N2)], and the abundance of soil denitrifiers was investigated using repacked soil cores. Quantitative polymerase chain reaction was used to measure the abundance of the total bacteria (16S rRNA gene), two denitrifier guilds bearing the cnorB ...

  • The Role of Soil Moisture on our Climate, Weather and Global Warming

    Global warming is a topic that has received much attention in the media, especially during the hot days of summer. The process by which carbon dioxide (CO 2) in the atmosphere prevents the escape of thermal energy into outer space is known as the green house effect. The higher the carbon dioxide levels in the atmosphere the less thermal energy that can escape thus an increasing global ...

  • Soil CO2 efflux in uneven-aged managed forests: temporal patterns following harvest and effects of edaphic heterogeneity

    AbstractForest management is expected to influence soil CO2 efflux (FCO2) as a result of changes in microclimatic conditions, soil properties, and root dynamics. We measured FCO2 during the growing seasons of 2003 and 2004 in both gap and non-gap locations within stands ranging from 0 to 10 years after the most recent harvest in a selection-managed northern hardwood forest in central Ontario, ...


    By Springer

  • Iron Oxyhydroxide reduction in simulated wetland soils: Effects of mineralogical composition of Iris paints

    Reducing conditions in soils can be documented by the voltage measured between Pt and reference electrodes (Eh) or by using dyes like ,-dipyridyl for identifying reduced species (such as Fe2+). Indicator of Reduction in Soils (IRIS) tubes have been recently introduced as an alternative approach for documenting reducing conditions in soils, where a synthetic Fe oxyhydroxide painted on polyvinyl ...

  • Microbial community structure and functioning along metal pollution gradients

    Toxic effects of heavy metals on soil microorganisms have been confirmed in a number of laboratory studies. However, most real‐field studies do not allow for strong general conclusions due to a range of problems, such as pseudoreplication and confounding factors, which are almost impossible to control for with the most commonly used polluted‐vs.‐unpolluted or random sampling designs. Effects ...


    By John Wiley & Sons, Ltd.

  • Bioventing

    Introduction Bioventing is a promising new technology that stimulates the natural in situ biodegradation of any aerobically degradable compounds in soil by providing oxygen to existing soil microorganisms. In contrast to soil vapor vacuum extraction, bioventing uses low air flow rates to provide only enough oxygen to sustain microbial activity. Oxygen is most commonly supplied through direct air ...

  • Tracking the fate of ancient carbon in the Siberian Arctic

    The Siberian Arctic is one of the most remote and pristine corners of the planet. During the brief summer season, temperatures can climb into the 90s Fahrenheit, and the seemingly endless expanse of boreal forest — or taiga — and tundra explodes with plant and animal life. Every summer since 2008, R. Max Holmes and colleagues from the Woods Hole Research Center have brought a growing ...


    By Ensia

  • Regional Patterns in Carbon Cycling Across the Great Plains of North America

    The large organic carbon (C) pools found in noncultivated grassland soils suggest that historically these ecosystems have had high rates of C sequestration. Changes in the soil C pool over time are a function of alterations in C input and output rates. Across the Great Plains and at individual sites through time, inputs of C (via aboveground production) are correlated with precipitation, however, ...


    By Springer

  • Improving bioremediation

    Sustainability is becoming a benchmark for the quality of companies who offer remediation solutions, the technologies that they develop and offer commercially, as well as the entire projects where they are used. It is, in essence, not something that can be simply ignored in the months and years ahead if standards are to continue to improve, says Tom Hayes of Ecologia. The sustainability ...


    By Newzeye Ltd

  • Terrestrial sequestration

    Trees play a key role in the environment's natural landscape due to their ability to prevent erosion. The Spanish Government says it will plant 45 million trees over the next four years to counter desertification caused by global warming. The massive tree–planting scheme aims to reduce the amount of carbon dioxide (CO2) in the atmosphere, the cause of global warming. It estimates that in the long ...


    By Erosion Control Forum

  • Hired metals analyser ensures remediation success

    Cognition Land and Water Ltd, a UK based remediation specialist, has hired a portable XRF metals analyser to improve the speed of remediation work at a project in London’s Kentish Town. The project had a major impact on local residents so timescales were extremely tight but Cognition’s Charlie Jarvis says “It would not have been possible to meet the deadline without the use of ...


    By Ashtead Technology Ltd

  • Increased demand for XRF analyser hire

    Steve Drake, NDT Market Manager at Ashtead Technology believes that XRF is one of the most important technologies in the company’s fleet of NDT and environmental testing instruments. “With a small amount of training, almost anyone can implement detailed inspections in a wide variety of applications, and with most instruments being lightweight and robust, XRF analysers are among the ...


    By Ashtead Technology Ltd

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