Short-term responses of soil decomposer communities to forest management: clear felling versus alternative forest harvesting methods

Siira-Pietikäinen, Anne; Pietikäinen, Janna; Fritze, Hannu; Haimi, Jari

doi:10.1139/cjfr-31-1-88

Cited by 48 publications

(70 citation statements)

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“…Organic-layer C fungal , C mic , and N mic were in the range reported by others (e.g., Pietikäinen and Fritze 1995;Ruzicka et al 2000;Siira-Pietikäinen et al 2001) (Table 1). Following harvesting, there was a reduction in C mic , which was probably dominated by reductions in C fungal (Table 1).…”

Section: Discussionsupporting

confidence: 76%

“…Harvesting has increased (Lundgren 1982;Londo et al 1999), decreased (Lundgren 1982;Siira-Pietikäinen et al 2001), and had no effect (Pennanen et al 1999;Toland and Zak 1994) on soil microbial biomass and respiration. Reductions have been attributed to reduced litter input following harvesting (Pietikäinen and Fritze 1995), whereas increases have been attributed to slash deposition (Lundgren 1982).…”

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confidence: 98%

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Effect of forest harvesting and slash piling on microbial biomass and respiration in Newfoundland boreal forests

Moroni¹,

Carter²,

Strickland³

et al. 2007

Can. J. Soil. Sci.

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L. 2007. Effect of forest harvesting and slash piling on microbial biomass and respiration in Newfoundland boreal forests. Can. J. Soil Sci. 87: 455-458. Clearcutting Newfoundland boreal forests significantly reduced organic layer fungal and total microbial biomass in clearcut areas with and without slash cover, compared with forested plots. However, aerobically incubated respiration rates were highest in organic layers from clearcut areas under slash, intermediate under forests, and lowest from clearcut areas without slash. [455][456][457][458]. La coupe à blanc des forêts boréales de Terre-Neuve diminue sensiblement la biomasse fongique dans la couche organique et la biomasse microbienne globale dans les zones exploitées recouvertes ou pas de branchages, comparativement aux parcelles boisées. Néanmoins, lors de l'incubation, on enregistre le taux de respiration aérobie le plus élevé dans la couche organique des zones déboisées couvertes de branchages, contre un taux moyen dans les zones boisées et le taux le plus faible dans les zones déboisées non recouvertes de branchages.

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Section: Discussionsupporting

confidence: 76%

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confidence: 98%

Effect of forest harvesting and slash piling on microbial biomass and respiration in Newfoundland boreal forests

Moroni¹,

Carter²,

Strickland³

et al. 2007

Can. J. Soil. Sci.

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“…Boyle et al [74] also found little evidence of thinning impacts on microorganisms in mineral soil from the same study site used by Kaye and colleagues [21]. Microbial response to thinning in other forest types has been shown to be quite variable, from reduced microbial biomass without altering the population structure [44], to structural differences without altering microbial biomass [75][76][77], to altered biomass and structure [78]. The microbial responses to thinning are in part quite variable due to differences in thinning intensities, harvest practices, post-treatment site preparations, and timing of thinning relative to soil measurements, making comparisons among studies problematic.…”

Section: Discussionmentioning

confidence: 97%

Short-Term Belowground Responses to Thinning and Burning Treatments in Southwestern Ponderosa Pine Forests of the USA

Overby

Hart

2016

Forests

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Microbial-mediated decomposition and nutrient mineralization are major drivers of forest productivity. As landscape-scale fuel reduction treatments are being implemented throughout the fire-prone western United States of America, it is important to evaluate operationally how these wildfire mitigation treatments alter belowground processes. We quantified these important belowground components before and after management-applied fuel treatments of thinning alone, thinning combined with prescribed fire, and prescribed fire in ponderosa pine (Pinus ponderosa) stands at the Southwest Plateau, Fire and Fire Surrogate site, Arizona. Fuel treatments did not alter pH, total carbon and nitrogen (N) concentrations, or base cations of the forest floor (O horizon) or mineral soil (0-5 cm) during this 2-year study. In situ rates of net N mineralization and nitrification in the surface mineral soil (0-15 cm) increased 6 months after thinning with prescribed fire treatments; thinning only resulted in net N immobilization. The rates returned to pre-treatment levels after one year. Based on phospholipid fatty acid composition, microbial communities in treated areas were similar to untreated areas (control) in the surface organic horizon and mineral soil (0-5 cm) after treatments. Soil potential enzyme activities were not significantly altered by any of the three fuel treatments. Our results suggest that a variety of one-time alternative fuel treatments can reduce fire hazard without degrading soil fertility.

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“…For example, Barg and Edmonds (1999) did not find any differences in N mineralization in field incubations or soil microbial biomass between an uncut Douglas-fir forest in the Pacific Northwest and green tree retention and clearcut treatments. Similarly, Siira-Pietikäinen et al (2001) found that decomposer communities in a Picea abies forest floor in Finland were barely affected by any form of harvesting (clearcut, selection, retention, and gap felling), with only clearcutting sometimes causing differences in communities compared to the unharvested forest. At MASS, it is interesting to note that C utilization patterns (Biolog plates) were distinctly different in the three treatments studied but that shelterwood was not intermediate between the clearcut or old-growth treatments, unlike other microbial parameters where the shelterwood was usually much like the clearcut (Bradley et al 2001).…”

Section: Do Alternative Silvicultural Systems Mitigate the Effects Ofmentioning

confidence: 91%

Post-harvest nitrogen cycling in clearcut and alternative silvicultural systems in a montane forest in coastal British Columbia

Titus¹,

Prescott²,

Maynard³

et al. 2006

The Forestry Chronicle

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The MASS (Montane Alternative Silvicultural Systems) trial was established in the coastal mountains of British Columbia to compare clearcut, patch cut, green tree and shelterwood systems. A number of studies were carried out at the MASS trial to determine the extent to which these variable levels of stand retention retained old-growth attributes of N cycling and associated ecological processes. Harvesting led to increases in N mineralization in the forest floor (2ϫ) and mineral soil (10ϫ), and fluxes of N through the upper 25 cm of mineral soil (2ϫ to 3ϫ). However, fluxes of N were not large (< 0.35 kg ha -1 per growing season). Nitrogen mineralized was predominantly ammonium and not nitrate in the forest floor (> 95% in all but clearcut, > 75% in clearcut) and upper mineral soil horizon (42-86%). The nitrate component came from heterotrophic decomposition of organic matter, not conversion of ammonium to nitrate by autotrophs, and nitrate increases resulted from decreased gross nitrate consumption with harvesting, rather than increased nitrate production. The increases in soil N availability resulting from harvesting were reflected in only slight increases in seedling foliar N concentrations for two to four years after logging (peak of~ 2% for western hemlock and ~ 1.6% for amabilis fir) before decreasing to below deficiency thresholds for both species. Overall, estimated losses of N from the rooting zone after harvesting (1 kg ha -1 yr -1 ) were minimal in comparison to estimated N inputs (4 kg ha -1 yr -1 ), N exports in logs at harvesting (250 kg ha -1 ) and soil reserves (11 400 kg ha -1 ). Although unlikely to affect future site productivity, losses of N could be reduced somewhat through the use of shelterwood harvesting.

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Short-term responses of soil decomposer communities to forest management: clear felling versus alternative forest harvesting methods

Cited by 48 publications

References 0 publications

Effect of forest harvesting and slash piling on microbial biomass and respiration in Newfoundland boreal forests

Effect of forest harvesting and slash piling on microbial biomass and respiration in Newfoundland boreal forests

Short-Term Belowground Responses to Thinning and Burning Treatments in Southwestern Ponderosa Pine Forests of the USA

Post-harvest nitrogen cycling in clearcut and alternative silvicultural systems in a montane forest in coastal British Columbia

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