Soil microbial diversity affects soil organic matter decomposition in a silty grassland soil

Baumann, Karen; Dignac, Marie-France; Rumpel, Cornélia; Bardoux, Gérard; Sarr, Amadou; Steffens, Markus; Maron, Pierre‐Alain

doi:10.1007/s10533-012-9800-6

Cited by 103 publications

(82 citation statements)

References 42 publications

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“…In contrast to wood, microbial diversity is reported to accelerate the decomposition of soil organic matter 31,32 , and this is thought to represent a general pattern 33,34 (but see Creed et al 35 for leaf litter). We hypothesise that because soil organic matter presents a much higher diversity of resources than does dead wood, niche complementarity amongst decomposer species drives positive relationships between diversity and soil organic matter decomposition.…”

Section: Discussionmentioning

confidence: 99%

Higher fungal diversity is correlated with lower CO₂emissions from dead wood in a natural forest: BioRxiv preprint

Schaefer

Liu

Popescu

et al. 2016

Preprint

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Wood decomposition releases almost as much CO 2 to the atmosphere as does fossil-fuel combustion, so the factors regulating wood decomposition can affect global carbon cycling. We used metabarcoding to estimate the fungal species diversities of naturally colonized decomposing wood in subtropical China and, for the first time, compared them to concurrent measures of CO 2 emissions. Wood hosting more diverse fungal communities emitted less CO 2 , with Shannon diversity explaining 26 to 44% of emissions variation. Community analysis supports a 'pure diversity' effect of fungi on decomposition rates and thus suggests that interference competition is an underlying mechanism. Our findings extend the results of published experiments using low-diversity, laboratory-inoculated wood to a highdiversity, natural system. We hypothesize that high levels of saprotrophic fungal biodiversity could be providing globally important ecosystem services by maintaining dead-wood habitats and by slowing the atmospheric contribution of CO 2 from the world's stock of decomposing wood. However, large-scale surveys and controlled experimental tests in natural settings will be needed to test this hypothesis.Global decomposition of wood releases CO 2 (6 to 9.5 Pg C/year 1,2,3 ) at similar rates to fossil-fuel combustion (9.5 Pg C/year in 2011 4 ). Decomposing wood also serves as essential habitat 5,6 . The factors controlling wood decomposition rates are therefore of broad importance to conservation and to carbon cycle-climate feedbacks.However, temperature and moisture variables only explain minority portions of total variance in decomposition rates 7,8 . For instance, Bradford et al. 9 reported that regional temperatures explain only 28% of local variance in mass loss.The diversity of wood-decomposing fungi might explain much of the remaining unexplained variance. In laboratory-inoculation experiments using small numbers of culturable fungal species, wood pieces with higher final fungal diversity exhibited reduced decay rates [10][11][12] . Inoculated wood placed in the field also showed a negative effect of final fungal species diversity on decay (R 2 = 0.15 13 ). However, in contrast to laboratory experiments, natural wood decomposition involves much higher species diversity, more complex assembly histories, and selective faunal feeding on decomposers [14][15][16] . Thus, it is important to examine the relationship between fungal diversity and decomposition rates in wood that is colonized and decomposing under natural conditions. Natural fungal communities can be characterized using metabarcoding 17 , in which nuclear ribosomal internal transcribed spacer (ITS) regions are PCR-amplified and read using high-throughput sequencing [18][19][20][21] . ITS1 and ITS2 are each sufficiently variable to differentiate fungal species 18,19 and return similar estimates of OTU (Operational Taxonomic Units) richness and community structure 19,22 . Here we metabarcoded ITS2 to examine fungal communities in naturally colonized wood pieces sampled across a...

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Section: Discussionmentioning

confidence: 99%

Higher fungal diversity is correlated with lower CO₂emissions from dead wood in a natural forest: BioRxiv preprint

Schaefer

Liu

Popescu

et al. 2016

Preprint

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“…Recycling these residues can be led to the increase of soil organic matter (SOM) content, soil fertility, and also agricultural production. The decomposition, nutrient mineralization, microbial biomass (Baumann et al, 2013) and microbial community structure (Balser and Firestone, 2005) of soil can be related to the chemical properties of plant residues. In this regards, residues with lower carbon to nitrogen ratio (C:N) and lower concentrations of resistant compounds (e.g.…”

Section: Introductionmentioning

confidence: 99%

Microbial communities and their characteristics in a soil amended by nanozeolite and some plant residues: Short time in-situ incubation

Aminiyan

Hosseini

Heydariyan

2018

Eurasian Journal of Soil Science (Ejss)

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Article Info Received : 29.04.2017 Accepted : 08.07.2017 Soil microbial communities and their related characteristics are an important agent for soil fertility, productivity, and sustainability. Also, they are useful indicators of soil quality and life index in agricultural systems. The objectives of this study were the effect of nanozeolite and plant residues on soil microbial communities and their characteristics and also, the assessment of incubation timing on soil microbial properties. Soil microorganisms are very important in the decomposition of plant residues. In this regard, the soil samples were treated by nanozeolite (0, 10 and 30% Weight), Alfalfa and wheat straw (0 and 5% Weight). The treated soil samples were incubated in lab condition for 90 days. The result of this study showed that Bacterial, Fungal, and Actinomycete populations increased by the addition of 30% of nanozeolite and 5% of plant residues, especially alfalfa straw. Also, the addition of nanozeolite and plant residues treatments improved MBC, BR, and SIR as microbial characteristics. These parameters increased after 30 days of starting incubation, then decreased until the 75 th day and finally increased slightly on the 90 th day. In fact, the addition of nanozeolite and plant residues into the soil had positive effects on improvement of carbon pools and increasing carbon sequestration in it. Applied nanozeolite and plant residues in soil, improved carbon pools and increased carbon sequestration in soil. Also the application of nanozeolite and plant residues especially alfalfa straw had positive effects on improvement of soil biological communities and characteristics.

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“…Variations in soil microbial diversity and community structure have a strong influence on soil organic matter turnover and may have an impact on the function of a given ecosystem (Baumann et al, 2013). For example, mycorrhizal fungi and nitrogen (N) fixing bacteria are responsible for 80 % of all N and up to 75 % of phosphorus (P) that is acquired by plants annually (van der Heijden et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Divergence of dominant factors in soil microbial communities and functions in forest ecosystems along a climatic gradient

Zhang

et al. 2018

Biogeosciences

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Soil microbial diversity affects soil organic matter decomposition in a silty grassland soil

Cited by 103 publications

References 42 publications

Higher fungal diversity is correlated with lower CO₂emissions from dead wood in a natural forest: BioRxiv preprint

Higher fungal diversity is correlated with lower CO₂emissions from dead wood in a natural forest: BioRxiv preprint

Microbial communities and their characteristics in a soil amended by nanozeolite and some plant residues: Short time in-situ incubation

Divergence of dominant factors in soil microbial communities and functions in forest ecosystems along a climatic gradient

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Soil microbial diversity affects soil organic matter decomposition in a silty grassland soil

Cited by 103 publications

References 42 publications

Higher fungal diversity is correlated with lower CO2emissions from dead wood in a natural forest: BioRxiv preprint

Higher fungal diversity is correlated with lower CO2emissions from dead wood in a natural forest: BioRxiv preprint

Microbial communities and their characteristics in a soil amended by nanozeolite and some plant residues: Short time in-situ incubation

Divergence of dominant factors in soil microbial communities and functions in forest ecosystems along a climatic gradient

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Higher fungal diversity is correlated with lower CO₂emissions from dead wood in a natural forest: BioRxiv preprint

Higher fungal diversity is correlated with lower CO₂emissions from dead wood in a natural forest: BioRxiv preprint