24 Result(s)
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Chapter
Earthworm invasions of ecosystems devoid of earthworms: effects on soil microbes
Recent studies document North American earthworm invasions and their profound effects on the structure of the soil profile, which is the habitat for soil microorganisms (mainly fungi and bacteria). Dramatic al...
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Article
Successional changes in microbial biomass, respiration and nutrient status during litter decomposition in an aspen and pine forest
Microbial biomass, microbial respiration, metabolic quotient (qCO2), Cmic/Corg ratio and nutrient status of the microflora was investigated in different layers of an aspen (Populus tremuloides Michx.) and pine fo...
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Article
Immobilization and availability of N and P in the forest floors of fertilized Rocky Mountain coniferous forests
The rates of key processes related to the recycling of nutrients in the forest floor were monitored for four years following the application of ammonium phosphate sulphate to small plots in mature stands of lo...
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Article
Relative importance of the effect of 2,4-D, glyphosate, and environmental variables on the soil microbial biomass
Two post-emergence herbicides (glyphosate and 2,4-D) were applied at field application levels to tilled field plots in a mixed crop** area in south-central Alberta. The effects of these chemicals on certain ...
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Article
Interactions between microclimatic variables and the soil microbial biomass
Soil moisture, temperature, microbial substrate-induced respiration and basal respiration were monitored in two plots in an agricultural field from April 30 to September 25, 1987, and in a further two plots fr...
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Article
Influence of the herbicide glyphosate on soil microbial community structure
The side effects of glyphosate on the soil microflora were monitored by applying a range of glyphosate concentrations (0, 2, 20, and 200 μg g−1 herbicide) to incubated soil samples, and following changes in vario...
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Article
Effects of three herbicides on soil microbial biomass and activity
Three post-emergence herbicides (2,4-D, picloram and glyphosate) were applied to samples of an Alberta agricultural soil at concentrations of 0, 2, 20, and 200 μg g−1. The effects of these chemicals on certain mi...
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Chapter and Conference Paper
Super Parallel Algorithms
Serial algorithmic design concentrates on how to solve a single instance of a given task on a single processor. The natural extension for parallel processing usually concentrates on how to solve the given sing...
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Article
Monitoring the impact of acid deposition on the soil microbiota, using glucose and vanillin decomposition
Samples of organic (F/H) and mineral soil (to approximately 8 cm depth) were collected from three ‘ecologically analogous’ sites in a boreal forest at intervals of 2.8 km (site 1), 6.0 km (site 2) and 9.6 km (...
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Article
Topsoil storage effects on primary production and rates of vesicular-arbuscular mycorrhizal development inAgropyron trachycaulum
A greenhouse study was conducted to determine the effects of stockpiling prairie grassland topsoil for 3 years on mycorrhizal development and root and shoot production of slender wheatgrass. The vesicular-arbu...
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Article
Effect of topsoil storage on microbial activity, primary production and decomposition potential
The effects of disturbing (cultivating) and stockpiling prairie grassland topsoil on microbial activity, microbial biomass C, plant production and decomposition potentials were studied by measuring CO2 efflux fro...
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Article
Effects of methanol on the microflora of an arctic soil
The effect of 36 lm−2 of 20% and 100% methanol spillage on the microflora of a soil near Inuvik, N.W.T. was assessed. Gas-liquid chromatography was used to monitor the residual methanol in the soil. Associated wi...
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Article
Studies on fungi in the root region
Qualitative studies have been made on the fungi in the rhizosphere of dwarf-bean plants using the soil-washing technique. The results obtained show small but consistent differences between rhizosphere and non-...
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Article
Studies on fungi in the root region
By studies on selected sterile dark fungi isolated from barley roots, an attempt is made to explain the ability of these fungi to colonize young roots. Studies on growth rate in soil and competitive ability in...
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Article
Studies on fungi in the root region
A study of the colonization of barley root surfaces by sterile dark fungi is described in which the root washing-segment plating technique and direct observation were employed to study the pattern of root colo...
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Article
An examination of the soil washing technique by its application to several soils
The soil-washing technique is discussed in relation to its efficiency in removing fungal spores from soil samples and to its application for studying soil microhabitats. Detailed data on the application of the...
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Article
Studies on fungi in the root region
Data are given on the fungi isolated from 30-day-old adventitious roots and seedling roots of severalAllium species by means of the root-washing technique. These fungi were typical root-surface forms includingCyl...
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Article
Studies on fungi in the root region
Information is given on the effects of soil temperature, moisture, and pH on the development of fungi on the root surfaces of dwarf-bean seedlings. These data are summarized in tabular form, and are discussed ...
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Article
Studies on fungi in the root region
Tabulated information on the colonization of roots of barley, cabbage and dwarf bean by fungi during the first 10 days of root development is given. These data, obtained by isolation and direct observation stu...
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Article
The growth of saprophytic fungi on root surfaces
Data are provided on the growth of non-pathogenic soil fungi on root surfaces. By growing roots from non-sterile soil into sterile vermiculite, and by regular isolation of fungi from the roots which had grown ...
