2020-01-17

Those decomposition models are not able to capture the spatial distributions of SOC stocks and primary drivers of SOC dynamics [Todd‐Brown et al., 2013], while microbial‐based soil organic matter decomposition models have been increasingly used at both site‐ and global‐scale studies [Allison et al., 2010; He et al., 2014b; Wieder et al., 2013], although more rigorous examination of

2020-02-06 · Increasing the pH from ~3.5 to ~5.5 altered microbial community structure, however increases in CH4 production were non-significant. Contrary to expectations, N and P additions did not increase CO2 and CH4 production, indicating that nutrient availability was not a primary constraint in microbial decomposition of deep peat. Indole and its derivatives, including 3-methylindole and 4-chloroindole, are environmental pollutants that are present worldwide. Microbial degradation of indole and its derivatives can occur in several aerobic and anaerobic pathways; these pathways involve different known and characterized genes. In this minireview, we summarize and explain the microbial degradation of indole, indole-3-acetic Microbial decomposition of soil organic matter determined by edaphic characteristics of mangrove forests in East Asia.

Decomposition models span a wide range of temporal, spatial, and hierarchical scales of resolution (Manzoni and Porporato, 2009), from physiologically based simulations of microbial activity in laboratory cultures (Resat et al., 2012) to empirical models that estimate gas flux dynamics over regional landscapes (Niu et al., 2012). 2019-07-01 Microbial decomposition of keratin in nature—a new hypothesis of industrial relevance Lene Lange1 & Yuhong Huang1 & Peter Kamp Busk1 Received: 30 October 2015/Revised: 16 December 2015/Accepted: 19 December 2015/Published online: 12 January 2016 # The Author(s) 2016. This article is published with open access at Springerlink.com UV radiation had no significant impact on soil microbial biomass carbon (MBC), but it reduced microbial respiration by 44.91% (2.26–78.62%) and altered the composition of the microbial community. In addition, UV radiation reduced nitrogen (N) immobilization by 19.44% (4.77–37.92%). Those decomposition models are not able to capture the spatial distributions of SOC stocks and primary drivers of SOC dynamics [Todd‐Brown et al., 2013], while microbial‐based soil organic matter decomposition models have been increasingly used at both site‐ and global‐scale studies [Allison et al., 2010; He et al., 2014b; Wieder et al., 2013], although more rigorous examination of 2021-03-26 Although bacteria were important in regulating buried litter decomposition rates and the population dynamics of bacterivorous fauna, their influence on buried litter N dynamics remains less clear. The larger microbial biomass and greater contribution of a bacterivorous fauna on buried litter is consistent with the greater carbon losses and lower carbon assimilation in CT than NT agroecosystems.

Thus, post-fire changes in microbial decomposition may depend on the degree of soil drying following the fire. Wood decomposition is a key component of carbon cycling.

av A Örn · 2019 · Citerat av 1 — Degradation of Polydimethylsiloxane (PDMS) was studied in alkaline and acidic environment. can also happen through microbial conversion to CO2.14

FIGURE 2.—Total carbon dioxide evolved during the microbial decom- position of three cuttings of alfalfa hay from the 1931 crop. 2021-03-26 · We assayed SOC decomposition from these incubations by combining inverse modeling and microbial functional genes during decomposition with a metagenomic technique (GeoChip).

12 Jun 2017 Addition of organic amendments to amitrole treated soil stimulated microbial activity but reduced amitrole degradation. Addition of specific

Nine bacterial strains, The purpose of this study was to investigate the influence of microbial biomass on the litter decomposition in relation to litter quality, litterfall, canopy leaf area 10 Jan 2021 Marine heterotrophic bacteria play an important role in the decomposition of particulate organic matter. (POM) derived from higher organisms. 10 Mar 2016 Hydrocarbons are abundant in anoxic environments and pose biochemical challenges to their anaerobic degradation by microorganisms. 12 Jun 2017 Addition of organic amendments to amitrole treated soil stimulated microbial activity but reduced amitrole degradation.

Warming-induced microbial decomposition of organic matter in permafrost soils constitutes a climate-change feedback of uncertain magnitude. BMC microbiology, 12(1): 302. PubMed: 23259572. PMC: PMC3556118 • Chandra, R., & Bharagava, R. N. (2013) Bacterial degradation of synthetic and kraft Svensk översättning av 'bacterial decomposition' - engelskt-svenskt lexikon med många fler översättningar från engelska till svenska gratis online.
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Recent advances in microbial ecology could help reduce this uncertainty, but current global models do not represent direct microbial control over decompo-sition. Instead, all of the coupled climate models reviewed in the most recent Intergovernmental Panel on Climate Change (IPCC) report assume that Decomposition spawns a microbial zoo.

However, mechanistic understanding of microbial mediation on chemically recalcitrant C instability is limited; thus, it is crucial to identify and evaluate active decomposers of chemically recalcitrant C Microbial decomposition of soil organic matter is mediated by quality and quantity of crop residues: mechanisms and thresholds.
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Index terms: microbial carbon, straw decomposition, soil microorganisms, plant residues. RESUMO. A decomposição de resíduos é um processo biológico

124 The second decomposition makes it possible to propose a model directly The microbial mineralization of six polycyclic aromatic hydrocarbons (PAHs), ( 2017 ) Isotopic evidence for microbial production and consumption of methane in ( 2012 ) The Paleozoic origin of enzymatic lignin decomposition reconstructed Microbiology of decomposition is the study of all microorganisms involved in decomposition, the chemical and physical processes during which organic matter is broken down and reduced to its original elements. Microbial communities are the engines of decomposition (1), a fundamental process regulating the carbon cycle.

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The processes, sorption-desorption and microbial decomposition (DOC production and mineralization) are found to contribute most to the variance in DOC

Most studies focused on their decomposing abilities, while factors affecting them were found to be variable (10, 16, 17). However, the role of bacteria in decomposition has also been recently highlighted (7, 11). Of the many elements required for microbial decomposition, carbon and nitrogen are the most important and the most commonly limiting. Carbon is both an energy source (note the root in our word for high-energy food: carbohydrate), and the basic building block making up about 50% of the mass of microbial cells. Nitrogen is a crucial compo- Crop residue quality and quantity have contrasting effects on soil organic matter (SOM) decomposition, but the mechanisms explaining such priming effect (PE) are still elusive.

The living part of soil organic matter includes a wide variety of micro-organisms such as bacteria, viruses, fungi, protozoa and algae. It also includes plant roots,

Everything that lives eventually dies a We found that the detailed microbial decomposition biogeochemistry model estimated a much lower carbon accumulation in the region during this century. The amount of soil carbon considered in the 21st-century simulations determines the regional carbon sink and source strengths, regardless of the complexity of models used.

2021-04-01 2018-11-20 2018-05-01 2017-01-12 2016-10-14 Northern peatlands are a large repository of atmospheric carbon due to an imbalance between primary production by plants and microbial decomposition.