Meta-analysis of the impacts of global change factors on soil microbial diversity and functionality

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: June 17, 2020

Biodiversity on the Earth is changing at an unprecedented rate due to a variety of global change factors (GCFs). However, effects GCFs microbial diversity unclear despite that soil microorganisms play critical role in biogeochemical cycling. Here, we synthesize 1235 GCF observations worldwide and show rare species are more sensitive than common species, while do not always lead reduction diversity. GCFs-induced shifts alpha can be predominately explained by changed pH. In addition, impacts functionality community structure biomass rather Altogether, our findings fundamentally different from previous knowledge for well-studied plant animal communities, crucial policy-making conservation hotspots under changes.

Language: Английский

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Fungal diversity notes 111–252—taxonomic and phylogenetic contributions to fungal taxa

Fungal Diversity, Journal Year: 2015, Volume and Issue: 75(1), P. 27 - 274

Published: Nov. 1, 2015

Language: Английский

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Global negative effects of nitrogen deposition on soil microbes

The ISME Journal, Journal Year: 2018, Volume and Issue: 12(7), P. 1817 - 1825

Published: March 27, 2018

Language: Английский

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Microbial carbon use efficiency and biomass turnover times depending on soil depth – Implications for carbon cycling

Soil Biology and Biochemistry, Journal Year: 2016, Volume and Issue: 96, P. 74 - 81

Published: Feb. 7, 2016

Language: Английский

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Microbial carbon limitation: The need for integrating microorganisms into our understanding of ecosystem carbon cycling

Global Change Biology, Journal Year: 2019, Volume and Issue: 26(4), P. 1953 - 1961

Published: Dec. 15, 2019

Numerous studies have demonstrated that fertilization with nutrients such as nitrogen, phosphorus, and potassium increases plant productivity in both natural managed ecosystems, demonstrating primary is nutrient limited most terrestrial ecosystems. In contrast, it has been heterotrophic microbial communities soil are primarily by organic carbon or energy. While this concept of contrasting limitations, is, limitation, based on strong evidence we review paper, often ignored discussions ecosystem response to global environment changes. The plant-centric perspective equated limitations those whole thereby ignoring the important role heterotrophs responsible for decomposition driving storage. To truly integrate cycles science, must account fact while may be limited, secondary inherently limited. Ecosystem cycling integrates independent physiological responses its individual components, well tightly coupled exchanges between autotrophs heterotrophs. extent interacting autotrophic processes controlled organisms versus accessibility, respectively, propose ecosystems definition cannot 'limited' alone. Here, outline how models aimed at predicting non-steady state over time can benefit from dissecting into organismal components their inherent better represent plant-microbe interactions models.

Language: Английский

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Patterns and mechanisms of responses by soil microbial communities to nitrogen addition

Soil Biology and Biochemistry, Journal Year: 2017, Volume and Issue: 115, P. 433 - 441

Published: Sept. 20, 2017

Language: Английский

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Stoichiometry of microbial carbon use efficiency in soils

Ecological Monographs, Journal Year: 2016, Volume and Issue: 86(2), P. 172 - 189

Published: May 1, 2016

Abstract The carbon use efficiency ( CUE ) of microbial communities partitions the flow C from primary producers to atmosphere, decomposer food webs, and soil stores. , usually defined as ratio growth assimilation, is a critical parameter in ecosystem models, but seldom measured directly soils because methodological difficulty measuring situ rates respiration. Alternatively, can be estimated indirectly elemental stoichiometry organic matter biomass, ratios nutrient‐acquiring ecoenzymatic activities. We used this approach estimate compare >2000 broad range ecosystems. Mean based on C:N was 0.269 ± 0.110 mean SD ). A parallel calculation C:P yielded 0.252 0.125. values frequency distributions were similar those aquatic ecosystems, also calculated stoichiometric direct measurements bacterial fungal related biomass with scaling exponent 0.304 (95% CI 0.237–0.371 inversely P −0.234 −0.289 −0.179 Relative specific turnover time increased 0.509 0.467–0.551). weakly annual temperature. declined increasing pH reaching minimum at 7.0, then again approached 9.0, pattern consistent trends : bacteria abundance growth. Structural equation models that geographic variables component showed strongest connections for paths linking latitude β‐glucosidase activity C:N:P ratios. integration metabolic provides quantitative description functional organization improve representation process simulation models.

Language: Английский

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It is elemental: soil nutrient stoichiometry drives bacterial diversity

Environmental Microbiology, Journal Year: 2016, Volume and Issue: 19(3), P. 1176 - 1188

Published: Dec. 10, 2016

It is well established that resource quantity and elemental stoichiometry play major roles in shaping below aboveground plant biodiversity, but their importance for microbial diversity soil remains unclear. Here, we used statistical modeling on a regional database covering 179 locations six ecosystem types across Scotland to evaluate the of total carbon (C), nitrogen (N) phosphorus (P) availabilities ratios, together with land use, climate biotic abiotic factors, determining scale patterns bacterial diversity. We found composition were primarily driven by variation (total C:N:P ratios), itself linked different uses, secondarily other important biodiversity drivers such as climate, spatial heterogeneity, pH, root influence (plant-soil microbe interactions) biomass (soil microbe-microbe interactions). In aggregate, these findings provide evidence nutrient strong predictor at scale.

Language: Английский

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Ecological importance of soil bacterivores for ecosystem functions

Plant and Soil, Journal Year: 2015, Volume and Issue: 398(1-2), P. 1 - 24

Published: Sept. 19, 2015

Language: Английский

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Minerals in the rhizosphere: overlooked mediators of soil nitrogen availability to plants and microbes

Biogeochemistry, Journal Year: 2018, Volume and Issue: 139(2), P. 103 - 122

Published: June 7, 2018

Despite decades of research progress, ecologists are still debating which pools and fluxes provide nitrogen (N) to plants soil microbes across different ecosystems. Depolymerization organic N is recognized as the rate-limiting step in production bioavailable N, it generally assumed that detrital main source. However, many mineral soils, polymers constitute a minor fraction total N. The majority associated with clay-sized particles where physicochemical interactions may limit accessibility N-containing compounds. Although mineral-associated matter (MAOM) has historically been considered critical, but relatively passive, reservoir growing body now points dynamic nature mineral-organic associations their potential for destabilization. Here we synthesize evidence from biogeoscience ecology demonstrate how MAOM an important, yet overlooked, mediator especially rhizosphere. We highlight several biochemical strategies enable disrupt access MAOM. In particular, root-deposited low-molecular-weight exudates enhance mobilization solubilization MAOM, increasing its bioavailability. competitive balance between possible fates monomers—bound surfaces versus dissolved available assimilation—will depend on specific interaction properties, solution, mineral-bound matter, microbes. Building off our emerging understanding source propose revision Schimel Bennett (Ecology 85:591–602, 2004) model (which emphasizes depolymerization), by incorporating proximal

Language: Английский

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