scholarly journals Microbial Mediation of Carbon, Nitrogen and Sulfur Cycles During Solid Waste Decomposition

2022 ◽  
Author(s):  
Liyan Song ◽  
Yangqing Wang ◽  
Rui Zhang ◽  
Shu Yang
Keyword(s):  
Community Structure ◽  
Solid Waste ◽  
Carbon Cycling ◽  
Carbon Fixation ◽  
Carbon Sink ◽  
Terrestrial Ecosystem ◽  
Archaeal Community ◽  
Main Pathway ◽  
S Cycling ◽  
Microbial Mediation

Abstract Landfills is a unique “terrestrial ecosystem” and serves as a significant carbon sink. Microorganism convert biodegradable substances in municipal solid waste (MSW) to CH4, CO2 and microbial biomass, consisting of the carbon cycling in landfills. Meanwhile, microbial mediated N and S cycles affect carbon cycling. How microbial community structure and function respond to C, N, and S cycling during solid waste decomposition, however are not well characterized. Here we show the response of bacterial and archaeal community structure and functions to C, N, and S cycling during solid waste decomposition in a long-term (265 days) operation laboratory-scale bioreactor through 16S rRNA based pyrosequencing and metagenomics analysis. Bacterial and archaeal community composition varied during solid waste decomposition. Aerobic respiration was the main pathway for CO2 emission, while anaerobic C fixation was the main pathway in carbon fixation. Methanogenesis and denitrification increased during solid waste decomposition, suggesting increasing CH4 and N2O emission. In contract, fermentation decreased along solid waste decomposition. Interestingly, Clostridiales were abundant and showed potential for several pathways in C, N, and S cycling. Archaea were involved in many pathways of C and N cycles. There is a shift between bacteria and archaea involvement in N2 fixation along solid waste decomposition that bacteria Clostridiales and Bacteroidales were initial dominant and then Methanosarcinales increased and became dominant in methanogenic phase. These results provide extensive microbial mediation of C, N, and S cycling profiles during solid waste decomposition.

Selection and Design of Ornamental Plants for Low-Carbon Urban Landscape: A Review

2012 ◽  
Vol 174-177 ◽  
pp. 2314-2317 ◽  
Author(s):  
Jian Zhang ◽  
Yan Hui Sui
Keyword(s):  
Community Structure ◽  
Green Space ◽  
Carbon Fixation ◽  
Urban Landscape ◽  
Carbon Sink ◽  
Ornamental Plants ◽  
Urban Green Space ◽  
Low Carbon ◽  
Urban Green ◽  
Natural Carbon

Urban green space is the sole natural carbon sink without energy consumption. Carbon sequestration capability of plant and soil depends on plant species and community structure in some content. In this paper, some studies on screening ornamental plants according to the capability of carbon absorption and sequestration and their impact on soil organic carbon were reviewed. In the whole, these results are not comprehensive and more researches need be explored. Some methods of plant landscape design were put forward, such as multistoried community structure, protection of urban natural vegetation, productive urban landscape and shading or blocking wind for building, which are very effective to filter out ornamental plant with high capability of carbon fixation and to construct rational plant landscape for low-carbon urban green space.

scholarly journals Combined monitoring of changes in δ13CH4 and archaeal community structure during mesophilic methanization of municipal solid waste

2009 ◽  
Vol 68 (2) ◽  
pp. 236-245 ◽  
Author(s):  
Xian Qu ◽  
Laurent Mazéas ◽  
Vasily A. Vavilin ◽  
Jonathan Epissard ◽  
Mélanie Lemunier ◽  
...  
Keyword(s):  
Community Structure ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Archaeal Community

scholarly journals Deciphering the archaeal communities in tree rhizosphere of the Qinghai-Tibetan Plateau

2020 ◽  
Author(s):  
Mengjun Zhang ◽  
Liwei Chai ◽  
Muke Huang ◽  
Weiqian Jia ◽  
Jiabao Guo ◽  
...  
Keyword(s):  
Community Structure ◽  
Tibetan Plateau ◽  
Keystone Species ◽  
Terrestrial Ecosystem ◽  
Archaeal Community ◽  
Ammonium Nitrogen ◽  
Bulk Soil ◽  
Available Phosphorus ◽  
Picea Crassifolia ◽  
Archaeal Communities

Abstract Background: The Qinghai-Tibetan Plateau represents one of the most important component of the terrestrial ecosystem and a particularly vulnerable region, which harbouring complex and diverse microbiota. The knowledge about their underground microorganisms have largely been studied, but the characteristics of rhizosphere microbiota, particularly archaeal communities remains unclear. Results: High-throughput Illumina sequencing was used to investigate the rhizosphere archaeal communities of two native alpine trees (Picea crassifolia and Populus szechuanica) living on the Qinghai-Tibetan Plateau. The archaeal community structure in rhizospheres significantly differed from that in bulk soil. Thaumarchaeota was the dominant archaeal phylum in all soils tested (92.46-98.01%), while its relative abundance in rhizospheres were significantly higher than that in bulk soil. Ammonium nitrogen, soil organic matter, available phosphorus and pH were significantly correlated with the archaeal community structure, and the deterministic processes dominated the assembly of archaeal communities across all soils. In addition, the network structures of the archaeal community in the rhizosphere were less complex than they were in the bulk soil, and an unclassified archaeal group (Unclassified_k_norank) was identified as the keystone species in all archaeal networks. Conclusions: Overall, the structure, assembly and co-occurrence patterns of archaeal communities are significantly affected by the presence of roots of alpine trees living on the Qinghai-Tibetan Plateau. This study provides new insights into our understanding of archaeal communities in vulnerable ecosystems.

scholarly journals Variability in Terrestrial Carbon Sinks over Two Decades. Part III: South America, Africa, and Asia

2005 ◽  
Vol 9 (29) ◽  
pp. 1-15 ◽  
Author(s):  
C. Potter ◽  
S. Klooster ◽  
P. Tan ◽  
M. Steinbach ◽  
V. Kumar ◽  
...  
Keyword(s):  
South America ◽  
Vegetation Cover ◽  
Amazon Basin ◽  
Carbon Fixation ◽  
Carbon Sink ◽  
Terrestrial Ecosystem ◽  
Atmospheric Co2 ◽  
Southeastern Brazil ◽  
South Central ◽  
Eastern Australia

Abstract Seventeen years (1982–98) of net carbon flux predictions for Southern Hemisphere continents have been analyzed, based on a simulation model using satellite observations of monthly vegetation cover. The NASA Carnegie Ames Stanford Approach (CASA) model was driven by vegetation-cover properties derived from the Advanced Very High Resolution Radiometer and radiative transfer algorithms that were developed for the Moderate Resolution Imaging Spectroradiometer (MODIS). The terrestrial ecosystem flux for atmospheric CO2 for the Amazon region of South America has been predicted between a biosphere source of –0.17 Pg C per year (in 1983) and a biosphere sink of +0.64 Pg C per year (in 1989). The areas of highest variability in net ecosystem production (NEP) fluxes across all of South America were detected in the south-central rain forest areas of the Amazon basin and in southeastern Brazil. Similar levels of variability were recorded across central forested portions of Africa and in the southern horn of East Africa, throughout Indonesia, and in eastern Australia. It is hypothesized that periodic droughts and wildfires associated with four major El Niño events during the 1980s and 1990s have held the net ecosystem carbon sink for atmospheric CO2 in an oscillating pattern of a 4–6-yr cycle, despite observations of increasing net plant carbon fixation over the entire 17-yr time period.

scholarly journals Deciphering the archaeal communities in tree rhizosphere of the Qinghai-Tibetan Plateau

2020 ◽  
Author(s):  
Mengjun Zhang ◽  
Liwei Chai ◽  
Muke Huang ◽  
Weiqian Jia ◽  
Jiabao Guo ◽  
...  
Keyword(s):  
Community Structure ◽  
Tibetan Plateau ◽  
Keystone Species ◽  
Terrestrial Ecosystem ◽  
Archaeal Community ◽  
Ammonium Nitrogen ◽  
Bulk Soil ◽  
Available Phosphorus ◽  
Picea Crassifolia ◽  
Archaeal Communities

Abstract Background: The Qinghai-Tibetan Plateau represents one of the most important component of the terrestrial ecosystem and a particularly vulnerable region, which harbouring complex and diverse microbiota. The knowledge about their underground microorganisms have largely been studied, but the characteristics of rhizosphere microbiota, particularly archaeal communities remains unclear.Results: High-throughput Illumina sequencing was used to investigate the rhizosphere archaeal communities of two native alpine trees (Picea crassifolia and Populus szechuanica) living on the Qinghai-Tibetan Plateau. The archaeal community structure in rhizospheres significantly differed from that in bulk soil. Thaumarchaeota was the dominant archaeal phylum in all soils tested (92.46-98.01%), while its relative abundance in rhizospheres were significantly higher than that in bulk soil. Ammonium nitrogen, soil organic matter, available phosphorus and pH were significantly correlated with the archaeal community structure, and the deterministic processes dominated the assembly of archaeal communities across all soils. In addition, the network structures of the archaeal community in the rhizosphere were less complex than they were in the bulk soil, and an unclassified archaeal group (Unclassified_k_norank) was identified as the keystone species in all archaeal networks. Conclusions: Overall, the structure, assembly and co-occurrence patterns of archaeal communities are significantly affected by the presence of roots of alpine trees living on the Qinghai-Tibetan Plateau. This study provides new insights into our understanding of archaeal communities in vulnerable ecosystems.

Effect of long-term fertilization on archaeal community structure in cal-careous purplish paddy soil

2011 ◽  
Vol 19 (3) ◽  
pp. 369-376
Author(s):  
Gu Yunfu ◽  
Zhang Xiaoping ◽  
Tu Shihua ◽  
Lindström Kristina
Keyword(s):  
Community Structure ◽  
Paddy Soil ◽  
Archaeal Community

scholarly journals Archaeal ammonia oxidizers respond to soil factors at smaller spatial scales than the overall archaeal community does in a high Arctic polar oasis

2016 ◽  
Vol 62 (6) ◽  
pp. 485-491 ◽  
Author(s):  
Samiran Banerjee ◽  
Nabla Kennedy ◽  
Alan E. Richardson ◽  
Keith N. Egger ◽  
Steven D. Siciliano
Keyword(s):  
Community Structure ◽  
Spatial Scales ◽  
Archaeal Community ◽  
Diversity Indices ◽  
High Arctic ◽  
Total Carbon ◽  
Spatial Dependency ◽  
Edaphic Factors ◽  
Total Carbon Content ◽  
Arctic Soils

Archaea are ubiquitous and highly abundant in Arctic soils. Because of their oligotrophic nature, archaea play an important role in biogeochemical processes in nutrient-limited Arctic soils. With the existing knowledge of high archaeal abundance and functional potential in Arctic soils, this study employed terminal restriction fragment length polymorphism (t-RFLP) profiling and geostatistical analysis to explore spatial dependency and edaphic determinants of the overall archaeal (ARC) and ammonia-oxidizing archaeal (AOA) communities in a high Arctic polar oasis soil. ARC communities were spatially dependent at the 2–5 m scale (P < 0.05), whereas AOA communities were dependent at the ∼1 m scale (P < 0.0001). Soil moisture, pH, and total carbon content were key edaphic factors driving both the ARC and AOA community structure. However, AOA evenness had simultaneous correlations with dissolved organic nitrogen and mineral nitrogen, indicating a possible niche differentiation for AOA in which dry mineral and wet organic soil microsites support different AOA genotypes. Richness, evenness, and diversity indices of both ARC and AOA communities showed high spatial dependency along the landscape and resembled scaling of edaphic factors. The spatial link between archaeal community structure and soil resources found in this study has implications for predictive understanding of archaea-driven processes in polar oases.

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