Changes in Decomposition Rate, Microbial Population and Carbohydrate Content of an Acid Peat Bog After Liming and Reclamation

Ivarson, K. C.

doi:10.4141/cjss77-017

Cited by 68 publications

(31 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…at sampling time. Increases in nitrification activity in peatlands are only measured following an increase of the pH by liming (Ivarson, 1977;Küster, 1975). However, the nitrate content of peat was 2-120-fold lower than the ammonium content.…”

Section: Nitrogen Cyclingmentioning

confidence: 99%

“…Similarly, Dooley and Dickinson (1970) obtained no increase in microflora species in a complex of ombrotrophic peatlands exploited and abandoned for 10 years. Most microorganisms isolated in this study are ubiquitous in peatland (Ivarson, 1977;Collins et al, 1978;Martin et al, 1982;Tahvonen, 1982). Also, they are related to the carbon cycle such as pectinic substances, cellulose, hemicellulose or lignin decomposition.…”

Section: Microbial Modifications In Peatlandsmentioning

confidence: 99%

“…However, since Penicillium sp. are common in peatland (Ivarson, 1977;Collins et al, 1978;Tahvonen, 1982) and their identification to the species level requires special training, this potential bio-indicator was not considered worthwhile. All microorganisms isolated in this study were able to grow on rich culture media, but the presence of more fastidious and non-culturable microorganisms should be investigated.…”

Section: Microbial Modifications In Peatlandsmentioning

confidence: 99%

See 2 more Smart Citations

Vacuum-extraction of peatlands disturbs bacterial population and microbial biomass carbon

Croft

Rochefort

Beauchamp

2001

Applied Soil Ecology

View full text Add to dashboard Cite

Knowledge concerning the microbial characteristics of natural and post-vacuum extracted ombrotrophic peatlands, as well as peatlands under restoration is limited. In one experiment, microbial comparisons of paired neighboring natural and post-vacuum peatlands in eastern Québec (Canada) were studied to assess the effects of peat mining on microbial indicators and nitrogen (N) cycling. Microbial counts, microbial biomass carbon (MB-C) and N mineralization were examined over two growing seasons. Also, in a second experiment, bio-indicators of the microbial status (microbial counts, MB-C and the quotient of MB-C to total carbon) of one peatland harboring natural, restored and post-vacuum extracted treatments were assessed sporadically over 6 years. The first experiment revealed that peat mining decreased populations of total bacteria, hemicellulolytic and cellulolytic microorganisms and MB-C, but increased peat ammonium content and N mineralization. The bacterial population was found to be lower in the post-vacuum extracted treatment than in natural treatment (control) and under restoration treatment, whereas the actinomycete population was higher in the post-vacuum extracted and restoration treatments than the natural one. Over the 6-year-time course experiment, the MB-C, total C and their quotient revealed a gradual increase in the peatland under restoration, but they remained similar in the post-vacuum extracted peatland treatment. This supports the concept that the total bacterial population and MB-C may be used as an ecological indicator to monitor major site disturbance using paired natural restored peatland. Published by Elsevier Science B.V.

show abstract

Section: Nitrogen Cyclingmentioning

confidence: 99%

Section: Microbial Modifications In Peatlandsmentioning

confidence: 99%

Section: Microbial Modifications In Peatlandsmentioning

confidence: 99%

See 1 more Smart Citation

Vacuum-extraction of peatlands disturbs bacterial population and microbial biomass carbon

Croft

Rochefort

Beauchamp

2001

Applied Soil Ecology

View full text Add to dashboard Cite

show abstract

“…The total microbial activity increases (Zelles, Grerup, 1986, 1987Hallbacken & Tamm, 1986;Scheunert & Kreutzer, 1987) and substantial shifts Tamm & Hallbacken, 1988) and it was considered in microbial population structure are to be expected likely that part of the observed decrease was due to (Fiedler & Fiedler, 1961;Ivarson, 1977;Baath, acid precipitation. To counteract soil acidification, Lundgren & Soderstrom, 1984).…”

Section: Introductionmentioning

confidence: 99%

Effects of liming on ectomycorrhizal fungi infecting Pinus sylvestris L.

Erland

Söderström

1990

New Phytologist

View full text Add to dashboard Cite

SUMMARYPinus sylvestris L. seedlings were grown in the laboratory in a forest humus which had been treated with different levels of CaO to give a soil pH gradient from 4 to 7. After 12 and 15 wk the resulting ectomycorrhizal infection was classified according to macroscopical morphology. The uniformity of the infection types distinguished was evaluated by isolating the fungi from the root tips and infecting seedlings with the isolates obtained. The isolation method was improved by using a medium containing benomyl and chlortetracyclin and by isolating from very small particles. For some mycorrhizal types the fungus was successfully isolated from 80% of the plated root particles.The number of root tips that became mycorrhizal increased from 70% at pH 4 to nearly 100% around pH 5. Thereafter it decreased linearly to reach a minimum of slightly less than 40 % at pH 7-5. Five different mycorrhizal types could be distinguished. They occurred with different abundance, distribution and pH optima. They were present throughout the entire pH range, except for a yellow type, identified as Piloderma croceum Erikss. & Hjortst., which was not found at values higher than 6-2. There was no great differences between infections on plants harvested after 12 and 15 wk. Seedling growth was constant to pH 5 then it increased up to about pH 7, at higher pH values growth declined.

show abstract

“…These treatments have been found to increase base saturation, pH, cation exchange capacity, and available phosphorus and to enhance soil microbial activity (Ivarson 1977;Adams et al 1978;Zelles et al 1978;Lohm et al 1984;Yavitt and Newton 1990;Illmer and Schinner 1991;Frostegard et al 1993;Neale et al 1997). Interest in Ca amendments is particularly strong in areas affected by acidic deposition, such as the northeastern U.S. ).…”

Section: Introductionmentioning

confidence: 99%

Effects of calcium silicate treatment on the composition of forest floor organic matter in a northern hardwood forest stand

et al. 2014

View full text Add to dashboard Cite

show abstract

Changes in Decomposition Rate, Microbial Population and Carbohydrate Content of an Acid Peat Bog After Liming and Reclamation

Cited by 68 publications

References 24 publications

Vacuum-extraction of peatlands disturbs bacterial population and microbial biomass carbon

Vacuum-extraction of peatlands disturbs bacterial population and microbial biomass carbon

Effects of liming on ectomycorrhizal fungi infecting Pinus sylvestris L.

Effects of calcium silicate treatment on the composition of forest floor organic matter in a northern hardwood forest stand

Contact Info

Product

Resources

About