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Storage effects on the community level physiological profiles of Mediterranean forest soils

AutorGoberna, M. ; Insam, H.; Pascual, Juan Antonio ; Sánchez Díaz, Juan
Palabras claveCommunity level physiological profiles
Storage effects
Mediterranean forest soils
Fecha de publicaciónene-2005
CitaciónSoil Biology and Biochemistry 37(1): 173-178 (2005)
ResumenCommunity level physiological profiles (CLPPs) have been implemented in many European soil monitoring programmes as a rapid tool for the assessment of the functional properties of soil microbial communities. However, this technique has not been harmonized among different laboratories. In this experiment, the changes of the CLPPs after storage of three Mediterranean forest soils were characterised for two sampling depths. The methods to store the samples were cooling, freezing and room temperature storage. Data presented in this study provide evidence that substantial changes can occur to the soil microbial community functions, regardless of the kind of storage. Changes in functional diversity and substrate evenness depended on the profile and sampling depth. The rate of consumption of the groups of substrates, however, shifted towards an enhanced utilisation of carboxylic acids, phenols and/or amines after 1 month storage at 4 °C, regardless of the profile or sampling depth. This was attributed to the physical disruption of soil aggregates and exposure of relatively recalcitrant occluded organic matter. These effects levelled out during 1-year storage. The great sensitivity of CLPPs to storage treatment suggests to take care for immediate analysis after sampling. In case fresh samples are not available, freezing is recommended as a convenient alternative; in that case, however, the kinetic approach is required for data analysis.
Descripción6 pages, 4 figures, 2 tables.
Versión del editorhttp://dx.doi.org/10.1016/j.soilbio.2004.06.014
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