Title | Assessment of soil microbial functional diversity: land use and soil properties affect CLPP-MicroResp and enzymes responses |
Publication Type | Journal Article |
Year of Publication | 2018 |
Authors | Moscatelli M.C, Secondi L., Marabottini R., Papp R., Stazi S.R, Mania E., Marinari S. |
Journal | Pedobiologia |
Volume | 66 |
Pagination | 36-42 |
Date Published | Jan |
Type of Article | Article |
ISBN Number | 0031-4056 |
Accession Number | WOS:000426204100005 |
Keywords | Agriculture, biodiversity, biogeography, carbon, communities, Ecosystem function, Environmental Sciences & Ecology, europe, indicators, Microbial processes, physiological profiles, Shannon diversity index, Soil properties |
Abstract | The assessment of microbial functional diversity is an important indicator of soil quality. Different methodological approaches are currently used; among them are enzyme activities (EA) and CLPP (community level physiological profile) techniques (e.g. MicroResp (TM), MR). The aims of the study were: i) to assess the efficacy of both methods in capturing differences among various land use categories when different levels of selected explanatory variables such as, total organic carbon (TOC) and pH are considered, and ii) to explore, through a quantile regression approach, the possible relationships between each of the two methods with land use category, TOC and pH. The Shannon diversity index (H'), calculated from EA and MR data, was chosen as a synthetic index deriving from the same mathematical model. The quantile regression model (QRM), the Kruskal-Wallis and Spearman rank correlation tests were performed. Enzyme activities and MicroResp were reliable ecological indicators to assess soil microbial functional diversity. No correlation was found between the diversity indexes, H'EA and H'MR; it was therefore supposed that the two methods may target complementary components of microbial functional diversity. Both methods were effective in capturing differences among various land use categories, in particular H'MR in soils with low TOC content (< 1.5%). Moreover, the QRM approach allowed a more detailed analysis along the distribution of the diversity indexes (H'EA and H'MR) indicating that H'EA was more dependent on the selected variables.
|
Short Title | PedobiologiaPedobiologia |
Alternate Journal | Pedobiologia |
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Moscatelli, M. C. Secondi, L. Marabottini, R. Papp, R. Stazi, S. R. Mania, E. Marinari, S.
Italian Ministry for Education, University and Research MIUR, Research Projects of National Interest PRIN [20082FC352-002, 2010JBNLJ7-006]; European Union [289277]
The authors wish to thank the following projects that funded the research: Italian Ministry for Education, University and Research MIUR, Research Projects of National Interest PRIN 2008 (20082FC352-002) and 2010 (2010JBNLJ7-006) the European Union FP7 Project n.289277: OSCAR (Optimising 423 Subsidiary Crop Applications in Rotations).
Elsevier gmbh, urban & fischer verlag
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