Denitrification in surface soils of a riparian forest: Effects of water, nitrate and sucrose additions

Jordan, Thomas E.; Weller, Donald E.; Correll, David L.

doi:10.1016/s0038-0717(98)00013-3

Cited by 36 publications

(22 citation statements)

References 43 publications

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“…The issues that still exist in identifying when negative fluxes of N 2 O are real or caused by instrumental noise using a high-precision QCL instrument suggests that more commonly used N 2 O flux measurement methodologies, such as the static chamber method, would have been unable to measure negative fluxes of N 2 O with the precision required to identify if they are real or not. The results of this study suggest that large negative fluxes reported in the literature may in fact indicate a larger detection limit of an individual methodology than previously thought, which may explain many reports of negative flux measurements in the literature (Jordan et al, 1998;Flechard et al, 2005;. Certainly, the majority of negative fluxes reported in this study were most likely caused by instrumental noise (as shown by Figs.…”

Section: Discussionsupporting

confidence: 49%

Investigating uptake of N<sub>2</sub>O in agricultural soils using a high-precision dynamic chamber method

et al. 2014

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Abstract. Uptake (or negative flux) of nitrous oxide (N 2 O) in agricultural soils is a controversial issue which has proved difficult to investigate in the past due to constraints such as instrumental precision and methodological uncertainties. Using a recently developed high-precision quantum cascade laser gas analyser combined with a closed dynamic chamber, a well-defined detection limit of 4 µg N 2 O-N m −2 h −1 could be achieved for individual soil flux measurements. 1220 measurements of N 2 O flux were made from a variety of UK soils using this method, of which 115 indicated uptake by the soil (i.e. a negative flux in the micrometeorological sign convention). Only four of these apparently negative fluxes were greater than the detection limit of the method, which suggests that the vast majority of reported negative fluxes from such measurements are actually due to instrument noise. As such, we suggest that the bulk of negative N 2 O fluxes reported for agricultural fields are most likely due to limits in detection of a particular flux measurement methodology and not a result of microbiological activity consuming atmospheric N 2 O.

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Section: Discussionsupporting

confidence: 49%

Investigating uptake of N<sub>2</sub>O in agricultural soils using a high-precision dynamic chamber method

et al. 2014

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“…In addition, there was no interaction between C and NO 3 ( addition on denitrification. Previous studies reported an increase in denitrification rate with increasing NO 3 ( addition (Jordan et al 1998;Strong and Fillery 2002), whereas others measured no significant effect of NO 3 ( addition on denitrification (Myrold and Tiedje 1985;De Klein and Van Logtestijn 1996). Jordan et al (1998) and Strong and Fillery (2002) observed an effect of NO 3 ( addition where soil NO ( 3 concentrations were very low (0Á15 mg N kg…”

Section: Discussionmentioning

confidence: 88%

“…Increased soil NO 3 ( concentrations can result in increased denitrification and N 2 O emissions (Smith et al 1998). However, while denitrification may be NO 3 ( limited in some cases (Jordan et al 1998;Strong and Fillery 2002), other studies have reported no significant effect of NO 3 ( addition on denitrification (Blackmer and Bremner 1978;De Klein and Van Logtestijn 1996). Denitrification has been reported to be limited by NO 3 ( when concentrations are lower than 5Á10 mg N kg…”

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confidence: 99%

Nitrous oxide emissions from denitrification and the partitioning of gaseous losses as affected by nitrate and carbon addition and soil aeration

Gillam¹,

Zebarth²,

Burton³

2008

Can. J. Soil. Sci.

137

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. 2008. Nitrous oxide emissions from denitrification and the partitioning of gaseous losses as affected by nitrate and carbon addition and soil aeration. Can. J. Soil Sci. 88: 133Á143. National inventories of N 2 O emissions from agricultural situations are being developed; however, the factors controlling such emissions may vary with soil and environmental conditions and management practices. This study determined the relative importance of soil aeration, as measured by water-filled pore space (WFPS), NO , N 2 O emissions and denitrification were low and were increased by both NO ( 3 and C addition treatments. Carbon source was investigated by amendment with glucose, red clover or barley straw. Based on the quantity of soil respiration per unit of C added in the amendment, C in the red clover and barley straw was estimated to be 48 and 28% as available as glucose C. When corrected for C availability, cumulative N 2 O emissions averaged 0.010, 0.011 and 0.002 mg N kg(1 soil, and cumulative denitrification averaged 0.014, 0.014 and 0.003 mg N kg (1 soil, for each 1.0 mg C kg (1 soil of available C added as glucose, red clover or barley straw, respectively. NO ( 3 addition had no effect on denitrification, but increased N 2 O emissions, especially where C availability was high. The amount of denitrification was controlled primarily by soil O 2 supply, as controlled by WFPS and C availability. The N 2 O:(N 2 O'N 2 ) ratio was generally high in cases where the supply of O 2 or NO 3 Á was sufficient to meet the demand for terminal electron acceptors. For personal use only.

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“…Mineral N addition increased both N 2 O emissions and total denitrification rates. In incubation studies, addition of NO 3 -has resulted either in an increase in denitrification rate ( Jordan et al, 1998;Strong and Fillery, 2002) or had no effect on denitrification rate (Myrold and Tiedje, 1985;, De Klein and van Logtestijn, 1996). Gillam et al (2008) concluded that NO 3 -addition affects denitrification rate only when NO 3 -is limiting the denitrification process, which can occur when the supply of NO 3 -is low or the demand for NO 3 -is high due to limited O 2 supply in combination with high availability of organic C. Nitrate addition increases N 2 O emissions in most cases through either an increase in the denitrification rate or through a change in the N 2 O molar ratio (Gillam et al, 2008).…”

Section: Effects Of Short-term Mineral Nitrogen Amendmentmentioning

confidence: 99%

Short‐Term Effects of Mineral and Organic Fertilizer on Denitrifiers, Nitrous Oxide Emissions and Denitrification in Long‐Term Amended Vineyard Soils

Tatti

Zebarth

Burton

et al. 2012

Soil Science Soc of Amer J

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Short‐term effects (i.e., 21 d) of mineral or organic fertilizer application on long‐term (i.e., 8 yr of applications) amended soil on denitrifier community abundance, denitrification gene mRNA transcript numbers, denitrification rate, and emissions of N2O were explored. Soil was collected from a vineyard in Italy receiving annual applications of either mineral fertilizer (conventional management system, CS) or municipal compost (organic management system, OS). Each soil was incubated using three treatments: no amendment, NH4NO3, or municipal compost. Microcosms set up with soil treated with compost showed higher nirS, nirK, and nosZ abundance in comparison to conventional fertilization. Short‐term compost addition increased nirK gene abundance over time in OS and CS soils, whereas nirS and nosZ gene abundance increased after compost addition only in OS soil. In OS soil, nosZ gene mRNA transcript numbers were higher at all time‐points for all treatments compared with CS soil. Furthermore, nosZ gene mRNA transcript number increased over time after compost addition for both soils, N2O emissions were higher in both soils after NH4NO3 addition compared with no amendment and compost addition. Denitrification was higher in OS than CS soil following NH4NO3 treatment. Denitrification rates were much higher than N2O rates in all cases suggesting most emissions occurred as N2. Our study demonstrated that long‐term urban‐waste compost application clearly changed soil denitrifier communities and the response of denitrification and N2O emissions to different short‐term soil amendments.

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Denitrification in surface soils of a riparian forest: Effects of water, nitrate and sucrose additions

Cited by 36 publications

References 43 publications

Investigating uptake of N<sub>2</sub>O in agricultural soils using a high-precision dynamic chamber method

Investigating uptake of N<sub>2</sub>O in agricultural soils using a high-precision dynamic chamber method

Nitrous oxide emissions from denitrification and the partitioning of gaseous losses as affected by nitrate and carbon addition and soil aeration

Short‐Term Effects of Mineral and Organic Fertilizer on Denitrifiers, Nitrous Oxide Emissions and Denitrification in Long‐Term Amended Vineyard Soils

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Denitrification in surface soils of a riparian forest: Effects of water, nitrate and sucrose additions

Cited by 36 publications

References 43 publications

Investigating uptake of N&lt;sub&gt;2&lt;/sub&gt;O in agricultural soils using a high-precision dynamic chamber method

Investigating uptake of N&lt;sub&gt;2&lt;/sub&gt;O in agricultural soils using a high-precision dynamic chamber method

Nitrous oxide emissions from denitrification and the partitioning of gaseous losses as affected by nitrate and carbon addition and soil aeration

Short‐Term Effects of Mineral and Organic Fertilizer on Denitrifiers, Nitrous Oxide Emissions and Denitrification in Long‐Term Amended Vineyard Soils

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Investigating uptake of N<sub>2</sub>O in agricultural soils using a high-precision dynamic chamber method

Investigating uptake of N<sub>2</sub>O in agricultural soils using a high-precision dynamic chamber method