Impact of the plant community composition on labile soil organic carbon, soil microbial activity and community structure in semi-natural grassland ecosystems of different productivity

Breulmann, Marc; Schulz, Elke; Weißhuhn, Karoline; Buscot, François

doi:10.1007/s11104-011-0993-6

Cited by 80 publications

(41 citation statements)

References 44 publications

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“…Living mulches improve soil physical and chemical properties, and thereby increase the microbial number and activity, which may explain the enhancement of the soil enzyme activity levels [38,42,43]. The diverse effect of living mulches on soil enzyme activities may be related to their various impacts on soil microbial population and community structure [35,44]. Different living mulch types have different effect on soil bacterial activities and community structure had also been proved in this study by the Biolog and T-RFLP methods.…”

Section: Living Mulch Application and Soil Enzyme Activity Levels Insupporting

confidence: 56%

“…The differences in the soil bacterial community structure between the living mulches could be mainly associated with the variation of the soil nutrient levels, mulch function, crop residue components, and root exudates, etc. [43,44]. After the living mulch application, the soil physical and chemical properties were improved [1,2,18].…”

Section: Living Mulch Application and Soil Bacterial Communities In Omentioning

confidence: 99%

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Effects of living mulches on the soil nutrient contents, enzyme activities, and bacterial community diversities of apple orchard soils

Qian

Pan

et al. 2015

European Journal of Soil Biology

115

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Section: Living Mulch Application and Soil Enzyme Activity Levels Insupporting

confidence: 56%

Section: Living Mulch Application and Soil Bacterial Communities In Omentioning

confidence: 99%

Effects of living mulches on the soil nutrient contents, enzyme activities, and bacterial community diversities of apple orchard soils

Qian

Pan

et al. 2015

European Journal of Soil Biology

115

View full text Add to dashboard Cite

“…The positive relationship between labile C and PLFA concentrations supported this point. Similarly, a positive relationship between Gram-negative bacterial PLFAs, actinomycete, protozoan PLFAs, and soil labile C which are decomposed from shoot and root litter was reported by Breulmann et al (2012). Mackie et al (2015) also reported that soil bacterial PLFAs were positively correlated to extractable organic C. Heavy metals could severely restrain microbial growth, because of their known toxicity to microorganisms at high concentrations (Singh et al 2014).…”

Section: Correlations Between Soil Plfas or Metabolic Functions And Cmentioning

confidence: 88%

“…However, to our understanding, the mechanisms of plant rhizosphere regulating soil microbial community structure and function during soil restoration, such as phytoextraction processes, are not well understood. Previous studies have demonstrated that microbial community composition and function can be greatly influenced by soil chemical status such as pH, organic matter, or pollutants (Breulmann et al 2012;Chodak et al 2013;Gartzia-Bengoetxea et al 2016). Relatively few researches have been taken to explore the relationships between microbiological properties and chemical properties in the rhizosphere of hyperaccumulator during phytoextraction.…”

Section: Responsible Editor: Robert Duranmentioning

confidence: 99%

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Distance-dependent varieties of microbial community structure and metabolic functions in the rhizosphere of Sedum alfredii Hance during phytoextraction of a cadmium-contaminated soil

Yang

Zhang

Lin

et al. 2017

Environ Sci Pollut Res

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The recovery of microbial community and activities is crucial to the remediation of contaminated soils. Distance-dependent variations of microbial community composition and metabolic characteristics in the rhizospheric soil of hyperaccumulator during phytoextraction are poorly understood. A 12-month phytoextraction experiment with Sedum alfredii in a Cd-contaminated soil was conducted. A pre-stratified rhizobox was used for separating sub-layer rhizospheric (0-2, 2-4, 4-6, 6-8, 8-10 mm from the root mat)/bulk soils. Soil microbial structure and function were analyzed by phospholipid fatty acid (PLFA) and MicroResp™ methods. The concentrations of total and specified PLFA biomarkers and the utilization rates for the 14 substrates (organic carbon) in the 0-2-mm sub-layer rhizospheric soil were significantly increased, as well as decreased with the increase in the distance from the root mat. Microbial structure measured by the ratios of different groups of PLFAs such as fungal/bacterial, monounsaturated/saturated, ratios of Gram-positive to Gram-negative (GP/GN) bacterial, and cyclopropyl/monoenoic precursors and 19:0 cyclo/18:1ω7c were significantly changed in the 0-2-mm soil. The PLFA contents and substrate utilization rates were negatively correlated with pH and total, acid-soluble, and reducible fractions of Cd, while positively correlated with labile carbon. The dynamics of microbial community were likely due to root exudates and Cd uptake by S. alfredii. This study revealed the stimulations and gradient changes of rhizosphere microbial community through phytoextraction, as reduced Cd concentration, pH, and increased labile carbons are due to the microbial community responses.

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Drone imagery protocols to map vegetation are transferable between dryland sites across an elevational gradient

et al. 2022

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The structure and composition of plant communities in drylands are highly variable across scales, from microsites to landscapes. Fine spatial resolution field surveys of dryland plants are essential to unravel the impact of climate change; however, traditional field data collection is challenging considering sampling efforts and costs. Unoccupied aerial systems (UAS) can alleviate this challenge by providing standardized measurements of plant community attributes with high resolution. However, given widespread heterogeneity in plant communities in drylands, and especially across environmental gradients, the transferability of UAS imagery protocols is unclear. Plant functional types (PFTs) are a classification scheme that aggregates the diversity of plant structure and function. We mapped and modeled PFTs and fractional photosynthetic cover using the same UAS imagery protocol across three dryland communities, differentiated by a landscape-scale gradient of elevation and precipitation. We compared the accuracy of the UAS products between the three dryland sites. PFT classifications and modeled photosynthetic cover had highest accuracies at higher elevations (2241 m) with denser vegetation. The lowest site (1101 m), with more bare ground, had the least agreement with the field data. Notably, shrub cover was well predicted across the gradient of elevation and precipitation ($230-1100 mm/year). UAS surveys captured the heterogeneity of plant cover across sites and presented options to measure leaf-level composition and structure at landscape levels. Our results demonstrate that some PFTs (i.e., shrubs) can readily be detected across sites using the same UAS imagery protocols, while others (i.e., grasses) may require site-specific flight protocols for best accuracy. As UAS are increasingly used to monitor dryland vegetation, developing protocols that maximize information and efficiency is a research and management priority.

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Impact of the plant community composition on labile soil organic carbon, soil microbial activity and community structure in semi-natural grassland ecosystems of different productivity

Abstract: Aims The main objective was to describe the effects of plant litter on SOC and on

Cited by 80 publications

References 44 publications

Effects of living mulches on the soil nutrient contents, enzyme activities, and bacterial community diversities of apple orchard soils

Effects of living mulches on the soil nutrient contents, enzyme activities, and bacterial community diversities of apple orchard soils

Distance-dependent varieties of microbial community structure and metabolic functions in the rhizosphere of Sedum alfredii Hance during phytoextraction of a cadmium-contaminated soil

Drone imagery protocols to map vegetation are transferable between dryland sites across an elevational gradient

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