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Soil Biology and Biochemistry
Article . 2013 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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Article . 2013
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Sensitivity of soil microbial catabolic profiles to a gradient of carbon inputs: Does the soil organic matter matter?

Authors: Anke M. Herrmann; Thomas Z. Lerch; Thomas Z. Lerch; Elsa Coucheney; Elsa Coucheney;

Sensitivity of soil microbial catabolic profiles to a gradient of carbon inputs: Does the soil organic matter matter?

Abstract

Abstract The development of the MicroResp™ approach ( Campbell et al., 2003 ) has allowed large-scale monitoring of community-level physiological profiles (CLPP). Here, we tested the sensitivity of this method to a carbon (C) substrate concentration gradient on 12 arable soils which had received contrasting long-term (53 years) managements. Irrespectively to the soil organic carbon (SOC), total activity and catabolic evenness were similar for C substrate addition above 10% C added of SOC, suggesting microbial respiratory metabolism saturation. Below this threshold, CLPP were significantly altered, especially when the amount of SOC was low. This threshold corresponded to 4 up to 10 mgC mL −1 soil water which is 66–87% lower than used in the original approach. Such C concentrations could be used in future MicroResp™ assaying when determining CLPP via multi-substrate induced respiration of the microbial biomass.

Country
France
Keywords

PHYSIOLOGICAL PROFILES, [SDE] Environmental Sciences, Soil organic carbon, [SDV]Life Sciences [q-bio], DIVERSITY, Community-level physiological profiles, BIOMASS, [SDV] Life Sciences [q-bio], MicroResp (TM), RESPIRATION, [SDE]Environmental Sciences, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, [SDV.BV] Life Sciences [q-bio]/Vegetal Biology, COMMUNITIES

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
12
Top 10%
Average
Top 10%