Influence ofLumbricus terrestrisand<scp>Folsomia candida</scp>on N2O formation pathways in two different soils – with particular focus on N2emissions

Schorpp, Quentin; Riggers, Catharina; Lewicka‐Szczebak, Dominika; Giesemann, Anette; Well, Reinhard; Schrader, Stefan

doi:10.1002/rcm.7716

Cited by 12 publications

(10 citation statements)

References 76 publications

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“…To decrease the high atmospheric N 2 background (78%) and thus improve 15 N 2 quantification4344, gas enrichment was performed in an artificial atmosphere. After closure, enrichment containers were purged with an artificial gas mixture consisting of 21% O 2 , 2% N 2 and 77% He.…”

Section: Methodsmentioning

confidence: 99%

Gas entrapment and microbial N2O reduction reduce N2O emissions from a biochar-amended sandy clay loam soil

Harter

Guzman-Bustamante

Kuehfuss

et al. 2016

Sci Rep

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Nitrous oxide (N2O) is a potent greenhouse gas that is produced during microbial nitrogen transformation processes such as nitrification and denitrification. Soils represent the largest sources of N2O emissions with nitrogen fertilizer application being the main driver of rising atmospheric N2O concentrations. Soil biochar amendment has been proposed as a promising tool to mitigate N2O emissions from soils. However, the underlying processes that cause N2O emission suppression in biochar-amended soils are still poorly understood. We set up microcosm experiments with fertilized, wet soil in which we used 15N tracing techniques and quantitative polymerase chain reaction (qPCR) to investigate the impact of biochar on mineral and gaseous nitrogen dynamics and denitrification-specific functional marker gene abundance and expression. In accordance with previous studies our results showed that biochar addition can lead to a significant decrease in N2O emissions. Furthermore, we determined significantly higher quantities of soil-entrapped N2O and N2 in biochar microcosms and a biochar-induced increase in typical and atypical nosZ transcript copy numbers. Our findings suggest that biochar-induced N2O emission mitigation is based on the entrapment of N2O in water-saturated pores of the soil matrix and concurrent stimulation of microbial N2O reduction resulting in an overall decrease of the N2O/(N2O + N2) ratio.

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Section: Methodsmentioning

confidence: 99%

Gas entrapment and microbial N2O reduction reduce N2O emissions from a biochar-amended sandy clay loam soil

Harter

Guzman-Bustamante

Kuehfuss

et al. 2016

Sci Rep

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“…Intercropping with legumes has been reported to reduce nitrogen application and leaching [63], however often aspects of the effects of S. perfoliatum on soil nitrogen dynamics are complicated. Under laboratory conditions, Schorpp et al [200] observed that NO 2 emissions increased under S. perfoliatum due to the increased denitrification induced by enhanced anecic earthworm population. They recommended that field experiments were needed to study the actual impact of S. perfoliatum on emissions of nitrogen oxides.…”

Section: Soil Health Regulationmentioning

confidence: 99%

Two Novel Energy Crops: Sida hermaphrodita (L.) Rusby and Silphium perfoliatum L.—State of Knowledge

et al. 2020

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Current global temperature increases resulting from human activity threaten many ecosystems and societies, and have led to international and national policy commitments that aim to reduce greenhouse gas emissions. Bioenergy crops provide one means of reducing greenhouse gas emissions from energy production and two novel crops that could be used for this purpose are Sida hermaphrodita (L.) Rusby and Silphium perfoliatum L. This research examined the existing scientific literature available on both crops through a systematic review. The data were collated according to the agronomy, uses, and environmental benefits of each crop. Possible challenges were associated with high initial planting costs, low yields in low rainfall areas, and for Sida hermaphrodita, vulnerability to Sclerotinia sclerotiorum. However, under appropriate environmental conditions, both crops were found to provide large yields over sustained periods of time with relatively low levels of management and could be used to produce large energy surpluses, either through direct combustion or biogas production. Other potential uses included fodder, fibre, and pharmaceutical uses. Environmental benefits included the potential for phytoremediation, and improvements to soil health, biodiversity, and pollination. The review also demonstrated that environmental benefits, such as pollination, soil health, and water quality benefits could be obtained from the use of Sida hermaphrodita and Silphium perfoliatum relative to existing bioenergy crops such as maize, whilst at the same time reducing the greenhouse gas emissions associated with energy production. Future research should examine the long-term implications of using Sida hermaphrodita and Silphium perfoliatum as well as improve knowledge on how to integrate them successfully within existing farming systems and supply chains.

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“…Initial application of 15 N GFM in lab incubations was carried out in closed vessels (Melin and Nõmmik 1983;Siegel et al 1982). Recently, some studies used N 2depleted atmosphere to increase sensitivity in soil incubations (Lewicka-Szczebak et al 2017;Schorpp et al 2016) achieving sensitivities for pool-derived N 2 of approximately 50 ppb which is thus comparable to GC sensitivity for N 2 O and two order of magnitude more sensitive compared to 15 N GFM under ambient atmosphere. Important to note is that this also improves precision for quantifying a p and thus yields more precise estimates for the dilution of the denitrified pool by soil-derived NO 3 − .…”

Section: Lab and Field Experimentsmentioning

confidence: 99%

“…Due to distinct isotopic fractionation for various biochemical reactions, the N 2 O isotopic studies have been often used to distinguish between different N 2 O production pathways, e.g., nitrification and denitrification (Cardenas et al 2017;Deppe et al 2017;Köster et al 2015;Toyoda et al 2011;Wolf et al 2015), or between different microorganisms involved in N 2 O production, e.g. fungal and bacterial denitrification (Kato et al 2013;Schorpp et al 2016;Zou et al 2014). Moreover, also N 2 O reduction can be potentially monitored by N 2 O isotopic data.…”

Section: Isotopocule Techniques Tomentioning

confidence: 99%

Isotopic Techniques to Measure N2O, N2 and Their Sources

Zaman

Kleineidam

Bakken

et al. 2021

Measuring Emission of Agricultural Greenhouse Gases and Developing Mitigation Options Using Nuclear and Related Techniques

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GHGemissions are usually the result of several simultaneous processes. Furthermore, some gases such as N2 are very difficult to quantify and require special techniques. Therefore, in this chapter, the focus is on stable isotopemethods. Both natural abundance techniques and enrichment techniques are used. Especially in the last decade, a number of methodological advances have been made. Thus, this chapter provides an overview and description of a number of current state-of-the-art techniques, especially techniques using the stable isotope15N. Basic principles and recent advances of the 15N gasflux method are presented to quantify N2 fluxes, but also the latest isotopologue and isotopomermethods to identify pathways for N2O production. The second part of the chapter is devoted to 15N tracing techniques, the theoretical background and recent methodological advances. A range of different methods is presented from analytical to numerical tools to identify and quantify pathway-specific N2O emissions. While this chapter is chiefly concerned with gaseous N emissions, a lot of the techniques can also be applied to other gases such as methane (CH4), as outlined in Sect. 10.1007/978-3-030-55396-8_5#Sec12.

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Influence ofLumbricus terrestrisandFolsomia candidaon N₂O formation pathways in two different soils – with particular focus on N₂emissions

Cited by 12 publications

References 76 publications

Gas entrapment and microbial N2O reduction reduce N2O emissions from a biochar-amended sandy clay loam soil

Gas entrapment and microbial N2O reduction reduce N2O emissions from a biochar-amended sandy clay loam soil

Two Novel Energy Crops: Sida hermaphrodita (L.) Rusby and Silphium perfoliatum L.—State of Knowledge

Isotopic Techniques to Measure N2O, N2 and Their Sources

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Influence ofLumbricus terrestrisandFolsomia candidaon N2O formation pathways in two different soils – with particular focus on N2emissions

Cited by 12 publications

References 76 publications

Gas entrapment and microbial N2O reduction reduce N2O emissions from a biochar-amended sandy clay loam soil

Gas entrapment and microbial N2O reduction reduce N2O emissions from a biochar-amended sandy clay loam soil

Two Novel Energy Crops: Sida hermaphrodita (L.) Rusby and Silphium perfoliatum L.—State of Knowledge

Isotopic Techniques to Measure N2O, N2 and Their Sources

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Influence ofLumbricus terrestrisandFolsomia candidaon N₂O formation pathways in two different soils – with particular focus on N₂emissions