Composition of the microbial communities in the mineral soil under different types of natural forest

Hackl, Evelyn; Pfeffer, Michael; Donat, Christina; Bachmann, Gert; Zechmeister‐Boltenstern, Sophie

doi:10.1016/j.soilbio.2004.08.023

Cited by 209 publications

(133 citation statements)

References 35 publications

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“…This is different to a number of studies that identified soil pH as one of the main environmental factors driving soil microorganisms functions and structure (Bääth and Anderson 2003;Hackl et al, 2005;Högberg et al, 2007). However, the range of the pH values in our soils is very low (7.8-8.2) which is probably the main reason for the lack of the significant correlations.…”

Section: Discussioncontrasting

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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Section: Discussioncontrasting

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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“…Recent studies have used Rhizopus oryzae and Aspergillus foetidus for the biotransformation of tannin rich substrates 22 . The results of the present study are in accordance with the earlier observations 23 that fungi are more resistant to inhibition by pine needle tannins. This study reinforces the need for selection of tannin resistant microbial inoculants, for use in tannin rich agro-ecosystems.…”

Section: Resultssupporting

confidence: 93%

Inhibitory activity of pine needle tannin extracts on some agriculturally resourceful microbes

2007

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Crude extracts of water and solvent extractable tannin fractions from pine needles were found to contain tannin concentrations of 10.15% and 13.15% tannic acid equivalents respectively. Thin Layer Chromatography revealed the presence of four distinct phenolic compounds, amongst which two were tannic acid like compounds. Both the extracts were found to be inhibitory to several microbes of agricultural importance. Amongst the bacterial strains studied, Azotobacter sp (VL-A2) was able to tolerate upto 1000 ppm of crude tannin concentration without any growth inhibition. While growth of Rhizobium (VL -R1) and Bacillus halodurans (MTCC 7181) was inhibited by crude tannin concentrations of 50 and 100 ppm respectively of both water and solvent extracted tannins. Among the fungal genera, Pleurotus djamor was found to tolerate up to 10000 ppm of crude tannins, while Trichoderma virescens (MTCC 6321) and T. reesii could tolerate up to 3000 ppm of both water extractable and acetone extractable crude tannins without any growth inhibition.

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“…Hackl et al (2005) also found higher concentrations of fungal fatty acids in pine forests than in beech or oak forests and suggested that was because fungi were presumably more efficient than bacteria at decomposing pine litter. Pine litter contains large amounts of tannins and lignins and it is well known that fungi are the main degraders of lignin (Dix and Webster, 1995).…”

Section: Effect Of Tree Species On Soil Propertiesmentioning

confidence: 90%

Potential indicators of soil quality in temperate forest ecosystems: a case study in the Basque Country

et al. 2009

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Abstract• Assessment of forest sustainability requires reliable soil quality indicators. The present study evaluated the use of several potential such indicators in forests in the Basque Country under different types of management, involving: (i) species change and (ii) heavily mechanised forest operations.• Five adjacent forest stands were selected for study: (i) two unmanaged forests (Quercus robur, Fagus sylvatica) and one (40-year-old) Pinus radiata plantation, to investigate the effect of species change; and (ii) a chronosequence of mechanised radiata pine plantations (3 and 16 years old), to investigate heavy mechanisation.• Several physical, chemical and biological parameters were analysed in the mineral soil. Species change could not be assessed with chemical parameters, but parameters related to organic matter indicated the disturbance caused by heavy mechanisation. The Least Limiting Water Range was a good indicator of soil physical degradation induced by heavy mechanisation. Biological parameters proved sensitive indicators: (i) the fungal phospholipid fatty acid biomarker 18:2ω6 for species change; and (ii) the ratio of Gram-positive/Gram-negative bacteria for heavy mechanisation. Nevertheless, these parameters are complementary, and monitoring programmes should include physical, chemical and biological parameters.• Further studies are required to assess natural boundaries of variation in soil quality indicators, and their resistance and resilience. Mots-clés : changement d'espèces / débardage / indicateurs de solRésumé -Indicateurs potentiels de la qualité des sols dans les écosystèmes forestiers tempérés : une étude de cas dans le Pays Basque.• L'évaluation de la durabilité des forêts nécessite des indicateurs fiables de la qualité des sols. La présente étude a évalué l'utilisation de plusieurs de ces indicateurs potentiels dans les forêts du Pays Basque sous différents types de gestion, comprenant : (i) le changement des espèces et (ii) les opéra-tions forestières fortement mécanisées.• Cinq peuplements forestiers voisins ont été sélectionnés pour l'étude : (i) deux forêts non gérées (Quercus robur, Fagus sylvatica) et une plantation (âgée de 40 ans) de Pinus radiata, pour examiner l'effet des changements d'espèces, (ii) une chronoséquence de plantations mécanisées de Pinus radiata (âgées de 3 et 16 ans), pour enquêter sur la mécanisation lourde.• Plusieurs caractéristiques physiques, chimiques et biologiques ont été analysées dans le sol miné-ral. Le changement d'espèce ne peut être évaluée avec des paramètres chimiques, mais les paramètres liés à la matière organique ont indiqué des perturbations causées par la forte mécanisation. Le Least Limiting Water Range est un bon indicateur de la dégradation des sols induite par la forte méca-nisation. Paramètres biologiques qui se sont révélés des indicateurs sensibles : (i) le biomarqueur acide gras phospholipide fongique 18:2ω6 pour le changement d'espèces, (ii) le rapport bactérien Gram-positive/Gram-negative pour la mécanisation lourde. Néanmoins, c...

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Composition of the microbial communities in the mineral soil under different types of natural forest

Cited by 209 publications

References 35 publications

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

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

Inhibitory activity of pine needle tannin extracts on some agriculturally resourceful microbes

Potential indicators of soil quality in temperate forest ecosystems: a case study in the Basque Country

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