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microbialbiomass, etc ; carbon dioxide; fungi; toluene; volatile organic compounds; wheat straw; China; Show all 7 Subjects
Abstract:
... As a common practice in agricultural system, straw return has been reported to release a large number of trace gases and attracted much attention. However, the role of straw return in toluene emission remains poorly understood. In this study we measured the emissions of toluene as well as other 50 volatile organic compounds (VOCs) from wheat straw return for 66 days under flooded and non-flooded c ...
microbialbiomass, etc ; cinnamon; environmental technology; oils; pollution; sodium alginate; Show all 6 Subjects
Abstract:
... In the process of handling marine oil spills accidents, the biological method has attracted wide attention due to its low cost and no secondary pollution. However, in the process of practical application, there are problems such as low microbial density and great influence of environmental factors when the oil is treated by spraying microorganisms on the sea surface. This study used immobilized mi ...
microbialbiomass, etc ; arid lands; catenas; ecosystems; homeostasis; nitrogen; steppes; stoichiometry; Show all 8 Subjects
Abstract:
... The impacts of increased ecosystem nitrogen (N) inputs on soil microbial biomass C:N:P stoichiometry have been extensively explored. However, the stoichiometric homeostasis and driving mechanisms of microbial C:N:P stoichiometry following N enrichment remain elusive in dryland ecosystems, especially in moderately alkaline desert steppes. Here, we employed a five-year (2015–2019) N enrichment exper ...
microbialbiomass, etc ; biosorbents; biosorption; biotechnology; cost effectiveness; ion exchange; lanthanides; solvents; Show all 8 Subjects
Abstract:
... The extraction and separation of rare earth elements (REE) from raw materials are complicated due to their similar physical and chemical properties. Hydrometallurgical methods such as solvent extraction and ion exchange have been applied with low selectivity and efficiency at diluted solutions. Biosorption could be used as a hydrometallurgical process to extract, separate, and recover REE both in ...
microbialbiomass, etc ; environment; fish; migratory behavior; plankton; prokaryotic cells; seawater; Red Sea; Show all 8 Subjects
Abstract:
... Contrary to epipelagic waters, where biogeochemical processes closely follow the light and dark periods, little is known about diel cycles in the ocean's mesopelagic realm. Here, we monitored the dynamics of dissolved organic matter (DOM) and planktonic heterotrophic prokaryotes every 2 h for one day at 0 and 550 m (a depth occupied by vertically migrating fishes during light hours) in oligotrophi ...
microbialbiomass, etc ; carbon dioxide; microbial carbon; soil; soil biology; soil carbon; stoichiometry; Show all 7 Subjects
Abstract:
... How carbon partitions between microbial biomass and CO₂ (carbon use efficiency, CUE) is key in all soil carbon cycling models. Traditional methods to estimate CUE focus on the physiological partitioning of specific substrates, typically labeled with isotopes. However, an alternative approach (Sinsabaugh et al., 2016) is based on community-level resource capture using assays of extracellular enzyme ...
microbialbiomass, etc ; biochar; corn; leaves; mineralization; nitrogen fertilizers; rhizosphere; soil; urea; urea nitrogen; Show all 10 Subjects
Abstract:
... Biochar amendments regulate fertilizer nitrogen (N) transformation in soil and crop N uptake. To elucidate the effect of biochar amendment on the translocation of fertilizer N in a crop-soil system during crop growth, a maize pot experiment was conducted using an isotope tracer approach. The treatments were: without N application; ¹⁵N-labelled urea; and ¹⁵N-labeled urea plus biochar. During maize ...
microbialbiomass, etc ; Glomus; Paraglomus; agriculture; cotton; hyphae; phosphorus; species richness; vesicular arbuscular mycorrhizae; Show all 9 Subjects
Abstract:
... The species richness and propagule number of arbuscular mycorrhizal fungi (AMF) are high in intensively managed agricultural soils. Past research has shown that AMF improve crop phosphorus (P) uptake under low soil P conditions, however it is unclear if AMF play a role in high Olsen-P soils. In this study, we investigated whether native fungal benefits exist under high P input field conditions in- ...
Éder Rodrigues Batista; Aline de Jesus Franco; Ana Paula Valadares da Silva; Jessyca Adriana Gomes Florêncio da Silva; Davi Santos Tavares; Josemara Karina de Souza; Aline Oliveira Silva; Marisângela Viana Barbosa; Jessé Valentim dos Santos; Marco Aurélio Carbone Carneiro
microbialbiomass, etc ; carbon; ecophysiology; enzyme activity; microbial growth; organic matter; rivers; soil ecology; Show all 8 Subjects
Abstract:
... We investigated key ecophysiological traits of microbial communities across different disturbance levels for two upper horizon depths (A1: 0–3 cm and A2: 10–13 cm) in areas disturbed by Fundão dam failure across Gualaxo do Norte river. We found that lower microbial growth (microbial biomass) and higher microbial-C losses (high qCO₂) were linked to both decreases in organic substrate availability a ...
microbialbiomass, etc ; agronomy; carbon dioxide fixation; corn; photosynthesis; soil; soil organic carbon; straw; Show all 8 Subjects
Abstract:
... Returning straw into soil could increase soil organic carbon (SOC) and promote crop growth. However, little has been reported on the source of C for increased SOC (straw C or crop photosynthetic C). To investigate the assimilation of photosynthetic C and its distribution in soil in the maize growth season, we set up a 1-year 13C pulse-labeling experiment in a consecutive maize-straw-returning long ...
microbialbiomass, etc ; calcification; calcium carbonate; carbon dioxide; mass transfer; microorganisms; porosity; sludge; technology; Show all 9 Subjects
Abstract:
... Microbiota quorum sensing (QS) induced by 3O-C6-HSL (N-(β-ketocaproyl)-DL-homoserine lactone) inhibited the calcification of anaerobic granular sludge (AnGS), and the mechanism of promoting the activity recovery of calcified AnGS was studied in this paper. Through research, it was speculated that 3O-C6-HSL acted on calcified AnGS residual microorganisms to trigger QS. It enriched many functional m ...
microbialbiomass, etc ; DNA; agarose; digestion; ecology; enzymes; genome; humans; metagenomics; molecular weight; tongue; Show all 11 Subjects
Abstract:
... By offering extremely long contiguous characterization of individual DNA molecules, rapidly emerging long‐read sequencing strategies offer comprehensive insights into the organization of genetic information in genomes and metagenomes. However, successful long‐read sequencing experiments demand high concentrations of highly purified DNA of high molecular weight (HMW), which limits the utility of es ...
microbialbiomass, etc ; agronomy; biochar; meta-analysis; models; nitrogen; nitrous oxide; soil; total nitrogen; Show all 9 Subjects
Abstract:
... Biochar addition is a promising solution to improve soil nitrogen (N) availability and enhance crop productivity. However, a comprehensive understanding of the impact of soil N dynamics on crop productivity under biochar addition remains elusive. Here, we conducted a meta-analysis from 93 peer-reviewed field experiments to synthesize the linkage of crop productivity to soil N dynamics under biocha ...
microbialbiomass, etc ; climate change; ecosystems; grasslands; greenhouse gases; microbial nitrogen; snow; spring; winter; Show all 9 Subjects
Abstract:
... Seasonal differences in plant and microbial nitrogen (N) acquisition are believed to be a major mechanism that maximizes ecosystem N retention. There is also a concern that climate change may interrupt the delicate balance in N allocation between plants and microbes. Yet, convincing experimental evidence is still lacking. Using a ¹⁵N tracer, we assessed how deepened snow affects the temporal coupl ...
microbialbiomass, etc ; bioavailability; carbon; carbon dioxide; climate change; necromass; soil; soil organic matter; Show all 8 Subjects
Abstract:
... Microbial necromass is a central component of soil organic matter (SOM), whose management may be essential in mitigating atmospheric CO₂ concentrations and climate change. Current consensus regards the magnitude of microbial necromass production to be heavily dependent on the carbon use efficiency of microorganisms, which is strongly influenced by the quality of the organic matter inputs these org ...
microbialbiomass, etc ; climate; climate change; drought; forest succession; hydrology; land use; temperate forests; Show all 8 Subjects
Abstract:
... Terrestrial ecosystems are experiencing increasing frequency and intensity of droughts as a result of climate change. Despite a wealth of previous studies investigating soil responses to drought, the importance of historical land use in mediating drought effects remains poorly understood. To identify interactions between drought and historical land use, we sampled soils from two adjacent forested ...
microbialbiomass, etc ; altitude; carbon; forests; microbial communities; mineralization; organic nitrogen; phospholipid fatty acids; China; Show all 9 Subjects
Abstract:
... External organic nitrogen (N) inputs can contrastingly affect the transformation and availability of N in forest soils, which is an important potential N resource and is possibly vulnerable to soil properties. Little is known about the transformation and availability of external small molecule organic N in forest soils and the underlying microbial mechanisms. Soil samples from Changbai Mountain at ...
microbialbiomass, etc ; Stipa purpurea; absorption; environment; grasslands; gravel; land restoration; mulches; nitrogen; phytomass; soil; Show all 11 Subjects
Abstract:
... As an important coarse inorganic fraction of soil, gravel may regulate the effects of the interaction between above- and belowground communities and affect the relationship between microorganisms and plants in alpine ecosystems. However, comparatively little is known about the effects of gravel on the acquisition pattern of nitrogen (N) by microorganisms and plants in alpine ecosystems. In this st ...
Alicia M. Purcell; Michaela Hayer; Benjamin J. Koch; Rebecca L. Mau; Steven J. Blazewicz; Paul Dijkstra; Michelle C. Mack; Jane C. Marks; Ember M. Morrissey; Jennifer Pett‐Ridge; Rachel L. Rubin; Egbert Schwartz; Natasja C. van Gestel; Bruce A. Hungate
microbialbiomass, etc ; biodiversity; carbon; climate; ecosystems; meadows; microbial communities; phytomass; soil; soil carbon; temperature; Show all 11 Subjects
Abstract:
... The carbon stored in soil exceeds that of plant biomass and atmospheric carbon and its stability can impact global climate. Growth of decomposer microorganisms mediates both the accrual and loss of soil carbon. Growth is sensitive to temperature and given the vast biological diversity of soil microorganisms, the response of decomposer growth rates to warming may be strongly idiosyncratic, varying ...
Yuhuai Liu; Muhammad Shahbaz; Yunying Fang; Baozhen Li; Xiaomeng Wei; Zhenke Zhu; Tin Mar Lynn; Shunbao Lu; Olga Shibistova; Jinshui Wu; Georg Guggenberger; Tida Ge
microbialbiomass, etc ; cellulose; enzyme kinetics; hydrolases; land degradation; paddies; paddy soils; phosphorus; rhizosphere; stoichiometry; Show all 10 Subjects
Abstract:
... The available carbon (C) to phosphorus (P) ratio in the soil is regulated by extracellular hydrolases for C and P acquisition by microbes and plants. However, the stoichiometric relationship between acquiring C and P in paddy rhizosphere and bulk soils remains unclear. The objective was to explore the underlying mechanisms of C and P acquisition stoichiometry in rhizosphere and bulk soils in respo ...