Soil organic matter quality as a link between microbial community structure and vegetation composition along a successional gradient in a boreal forest

Merilä, Päivi; Malmivaara-Lämsä, Minna; Spetz, Peter; Stark, Sari; Vierikko, Kati; Derome, John; Fritze, Hannu

doi:10.1016/j.apsoil.2010.08.003

Cited by 98 publications

(49 citation statements)

References 41 publications

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“…Biotic factors such as forest vegetation type can be closely linked to factors such as soil organic matter composition (Quideau et al, 2001;Merilä et al, 2010), microbial community composition (Prescott and Grayston, 2013) and nutrient availability (Binkley and Giardina, 1998). Other studies have shown that abiotic conditions including climate and geology can have a stronger effect than forest canopy Table 2.…”

Section: Environmental Controls On Natural Variabilitymentioning

confidence: 99%

“…Belowground communities and soil biodiversity are often assumed to be directly correlated to aboveground biotic factors, including vegetation composition (Wardle et al, 2004;Wall et al, 2010). Further, the regulation of carbon sources in boreal forests by heterotrophic soil microorganisms is considered to be closely associated with organic matter quality (Merilä et al, 2010), with microbial activity typically being limited by the availability of carbon rather than other nutrients (Ekblad and Nordgren, 2002). However, in our study, the patterns of organic matter composition were much weaker than patterns observed for nutrient availability and microbial communities.…”

Section: Nutrientsmentioning

confidence: 99%

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Comparing soil biogeochemical processes in novel and natural boreal forest ecosystems

et al. 2013

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Emulating the variability that exists in the natural landscape prior to disturbance should be a goal of soil reconstruction and land reclamation efforts following resource extraction. Long-term ecosystem sustainability within reclaimed landscapes can only be achieved with the re-establishment of biogeochemical processes between reconstructed soils and plants. In this study, we assessed key soil biogeochemical attributes (nutrient availability, organic matter composition, and microbial communities) in reconstructed, novel, anthropogenic ecosystems, covering different reclamation treatments following open-cast mining for oil extraction. We compared the attributes to those present in a range of natural soils representative of mature boreal forest ecosystems in the same area of Northern Alberta. Soil nutrient availability was determined in situ with resin probes, organic matter composition was described with ¹³C nuclear magnetic resonance spectroscopy and soil microbial community structure was characterized using phospholipid fatty acid analysis. Significant differences among natural ecosystems were apparent in nutrient availability and seemed more related to the dominant tree cover than to soil type. When analyzed together, all natural forests differed significantly from the novel ecosystems, in particular with respect to soil organic matter composition. However, there was some overlap between the reconstructed soils and some of the natural ecosystems in nutrient availability and microbial communities, but not in organic matter characteristics. Hence, our results illustrate the importance of considering the range of natural landscape variability and including several soil biogeochemical attributes when comparing novel, anthropogenic ecosystems to the mature ecosystems that constitute ecological targets

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Section: Environmental Controls On Natural Variabilitymentioning

confidence: 99%

Section: Nutrientsmentioning

confidence: 99%

Comparing soil biogeochemical processes in novel and natural boreal forest ecosystems

et al. 2013

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“…The concentration of neutral and acidic sugar units in noncellulosic polysaccharides was obtained by acid methanolysis followed by silylation and gas chromatography (GC) (38). The hemicellulose concentration was calculated as described by Merilä et al (25).…”

Section: /Shiromentioning

confidence: 99%

Tricholoma matsutake Dominates Diverse Microbial Communities in Different Forest Soils

Vaario¹,

Fritze²,

Spetz³

et al. 2011

Appl Environ Microbiol

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Fungal and actinobacterial communities were analyzed together with soil chemistry and enzyme activities in order to profile the microbial diversity associated with the economically important mushroom Tricholoma matsutake. Samples of mycelium-soil aggregation (shiro) were collected from three experimental sites where sporocarps naturally formed. PCR was used to confirm the presence and absence of matsutake in soil samples. PCR-denaturing gradient gel electrophoresis (DGGE) fingerprinting and direct sequencing were used to identify fungi and actinobacteria in the mineral and organic soil layers separately. Soil enzyme activities and hemicellulotic carbohydrates were analyzed in a productive experimental site. Soil chemistry was investigated in both organic and mineral soil layers at all three experimental sites. Matsutake dominated in the shiro but also coexisted with a high diversity of fungi and actinobacteria. Tomentollopsis sp. in the organic layer above the shiro and Piloderma sp. in the shiro correlated positively with the presence of T. matsutake in all experimental sites. A Thermomonosporaceae bacterium and Nocardia sp. correlated positively with the presence of T. matsutake, and Streptomyces sp. was a common cohabitant in the shiro, although these operational taxonomic units (OTUs) did not occur at all sites. Significantly higher enzyme activity levels were detected in shiro soil. These enzymes are involved in the mobilization of carbon from organic matter decomposition. Matsutake was not associated with a particular soil chemistry compared to that of nearby sites where the fungus does not occur. The presence of a significant hemicellulose pool and the enzymes to degrade it indicates the potential for obtaining carbon from the soil rather than tree roots.

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“…SWR, soil microbiology structure and activity are all functions of abiotic and biotic conditions; soil texture and mineralogy, soil moisture, climate, site specific conditions, chemical parameters, substrate availability, land use and plant communities (Gömöryová et al, 2013;Merilä et al, 2010;White et al 2005;Zornoza et al, 2009). Previous research has shown that water repellent patches of soil differ from adjacent wettable soils in pH, moisture, SOM quality and quantity, and microbial biomass (Doerr et al, 2000), even beneath the same plant species (Lozano et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Relationships between soil water repellency and microbial community composition under different plant species in a Mediterranean semiarid forest

Lozano

García‐Orenes

Bárcenas-Moreno

et al. 2014

Journal of Hydrology and Hydromechanics

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Soil water repellency (SWR) can influence many hydrological soil properties, including water infiltration, uneven moisture distribution or water retention. In the current study we investigated how variable SWR persistence in the field is related to the soil microbial community under different plant species (P. halepensis, Q. rotundifolia, C. albidus and R. officinalis) in a Mediterranean forest. The soil microbial community was determined through phospholipid fatty acids (PLFA). The relationships between microbiological community structure and the soil properties pH, Glomalin Related Soil Protein (GRSP) and soil organic matter (SOM) content were also studied. Different statistical analyses were used: Principal Component Analysis (PCA), ANOVA, Redundancy Analysis and Pearson correlations. The highest concentrations of PLFA were found in the most water repellent samples. PCA showed that microorganism composition was more dependent of the severity of SWR than the type of plant species. In the Redundancy Analysis, SWR was the only significant factor (p<0.05) to explain PLFA distributions. The only PLFA biomarkers directly related to SWR were associated with Actinobacteria (10Me16:0, 10Me17:0 and 10Me18:0). All the results suggest that a strong dependence between SWR and microbial community composition.

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Soil organic matter quality as a link between microbial community structure and vegetation composition along a successional gradient in a boreal forest

Cited by 98 publications

References 41 publications

Comparing soil biogeochemical processes in novel and natural boreal forest ecosystems

Comparing soil biogeochemical processes in novel and natural boreal forest ecosystems

Tricholoma matsutake Dominates Diverse Microbial Communities in Different Forest Soils

Relationships between soil water repellency and microbial community composition under different plant species in a Mediterranean semiarid forest

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