Search Results - "Brown, Shannon E"

Globally important nitrous oxide emissions from croplands induced by freeze–thaw cycles by Wagner-Riddle, Claudia, Congreves, Katelyn A., Abalos, Diego, Berg, Aaron A., Brown, Shannon E., Ambadan, Jaison Thomas, Gao, Xiaopeng, Tenuta, Mario

“…Seasonal freezing induces large thaw emissions of nitrous oxide, a trace gas that contributes to stratospheric ozone destruction and atmospheric warming…”
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Long-term variability in N2O emissions and emission factors for corn and soybeans induced by weather and management at a cold climate site by Baral, Khagendra R., Jayasundara, Susantha, Brown, Shannon E., Wagner-Riddle, Claudia

“…Nitrous oxide (N2O) emissions are highly variable in space and time due to the complex interplay between soil, management practices and weather conditions…”
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Micrometeorological measurements over 3 years reveal differences in N2O emissions between annual and perennial crops by Abalos, Diego, Brown, Shannon E., Vanderzaag, Andrew C., Gordon, Robert J., Dunfield, Kari E., Wagner-Riddle, Claudia

“…Perennial crops can deliver a wide range of ecosystem services compared to annual crops. Some of these benefits are achieved by lengthening the growing season,…”
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Nongrowing season soil nitrous oxide emissions as influenced by cover crops and fall tillage termination by Gao, Yuanpei, Borden, Kira A., Brown, Shannon E., Wagner-Riddle, Claudia

“…Cropland soil is a major driver of global nitrous oxide (N2O) emissions. In cold climates, nongrowing season (NGS) emissions can be significant due to high…”
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Overwinter and Spring Thaw Nitrous Oxide Fluxes in a Northern Prairie Cropland Are Limited but a Significant Proportion of Annual Emissions by Wagner‐Riddle, Claudia, Congreves, Kate A., Brown, Shannon E., Helgason, Warren D., Farrell, Richard E.

“…Croplands that experience seasonal soil freezing and thawing have been shown to be significant sources of N2O emissions. Yet, there is a paucity of year‐round…”
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Differences in field‐scale N2O flux linked to crop residue removal under two tillage systems in cold climates by Congreves, Katelyn A., Brown, Shannon E., Németh, Deanna D., Dunfield, Kari E., Wagner‐Riddle, Claudia

“…Residue removal for biofuel production may have unintended consequences for N2O emissions from soils, and it is not clear how N2O emissions are influenced by…”
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Evaluation of a lower-powered analyzer and sampling system for eddy-covariance measurements of nitrous oxide fluxes by Brown, Shannon E, Sargent, Steve, Wagner-Riddle, Claudia

“…Nitrous oxide (N2O) fluxes measured using the eddy-covariance method capture the spatial and temporal heterogeneity of N2O emissions. Most closed-path…”
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Responses of tree fine roots to temperature by PREGITZER, KURT S., KING, JOHN S., BURTON, ANDREW J., BROWN, SHANNON E.

“…Soil temperature can influence the functioning of roots in many ways. If soil moisture and nutrient availability are adequate, rates of root length extension…”
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Winter warming effects on soil nitrate leaching under cover crops: A field study using high-frequency weighing lysimeters by Lapierre, Jared, Machado, Pedro Vitor Ferrari, Debruyn, Zachary, Brown, Shannon E., Jordan, Sean, Berg, Aaron, Biswas, Asim, Henry, Hugh A. L., Wagner-Riddle, Claudia

“…Leaching of nitrate (NO 3 − )—a reactive nitrogen form with impacts on ecosystem health—increases during the non-growing season (NGS) of agricultural soils…”
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Estimating a Lagrangian Length Scale Using Measurements of CO2 in a Plant Canopy by Brown, Shannon E., Warland, Jon S., Santos, Eduardo A., Wagner-Riddle, Claudia, Staebler, Ralf, Wilton, Meaghan

“…Analytical Lagrangian equations capable of predicting concentration profiles from known source distributions offer the opportunity to calculate source/sink…”
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Low-power flux gradient measurements for quantifying the impact of agricultural management on nitrous oxide emissions by Brown, Shannon E., Wagner-Riddle, Claudia, Conrad, Ben

“…•New instrumentation measured N2O fluxes using 88 % to 97 % less power.•N2O fluxes measured via low-power flux-gradient compared well against…”
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Assessment of random errors in multi-plot nitrous oxide flux gradient measurements by Brown, Shannon E., Wagner-Riddle, Claudia

“…•A novel method calculated random errors of flux-gradient measurements of N2O fluxes.•Errors of fluxes greater than 45ngNm−2s−1 were on average 9% of the…”
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Evaluation of impacts of biosolids application and drainage water management on soil N2O and CH4 emissions using the flux gradient method by Zhu, Qiurui, Davidson, Eric A., Hagedorn, Jacob G., Castro, Mark S., Fisher, Thomas R., Fox, Rebecca J., Brown, Shannon E., Lewis, James W.

“…Existing studies have shown contradictory findings with respect to whether biosolids applications on agricultural lands lead to intensification of soil…”
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Cover crop mixtures: A powerful strategy to reduce post-harvest surplus of soil nitrate and leaching by Lapierre, Jared, Machado, Pedro Vitor Ferrari, Debruyn, Zachary, Brown, Shannon E., Jordan, Sean, Berg, Aaron, Biswas, Asim, Henry, Hugh A.L., Wagner-Riddle, Claudia

“…Cover cropping is a practice with potential to reduce post-harvest surplus of soil nitrate (NO3-), a mobile form of nitrogen naturally susceptible to losses…”
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High temporal resolution nitrous oxide fluxes from corn (Zea mays L.) in response to the combined use of nitrification and urease inhibitors by Ferrari Machado, Pedro Vitor, Neufeld, Katarina, Brown, Shannon E., Voroney, Paul R., Bruulsema, Thomas W., Wagner-Riddle, Claudia

“…•N2O fluxes were measured from four corn fields with a micromet method over 3 years.•Fields received urea or UAN with and without nitrification + urease…”
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Quantification of soil N2O and CH4 fluxes using the flux gradient method on a drainage water managed farm on the eastern shore of Maryland by Zhu, Qiurui, Davidson, Eric A., Hagedorn, Jacob G., Castro, Mark S., Fisher, Thomas R., Fox, Rebecca J., Brown, Shannon E., Lewis, James W.

“…•Drainage water management did not increase soil N2O or CH4 emissions.•N2O emissions were highly dependent on N fertilization and precipitation events.•A…”
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Greenhouse gas mitigation potential of annual and perennial dairy feed crop systems by Sulaiman, Muhammad F., Wagner-Riddle, Claudia, Brown, Shannon E., Warland, Jon, Voroney, Paul, Rochette, Philippe

“…•3-year average NEE is similar between hay and corn.•NECB of hay shows to be carbon neutral while corn is carbon source.•GHGB shows corn to be a larger GHG…”
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Predicting daily mean soil temperature from daily mean air temperature in four northern hardwood forest stands by BROWN, S. E, PREGITZER, K. S, REED, D. D, BURTON, A. J

“…Soil temperature is very important in regulating ecosystem processes, yet it is often difficult and costly to measure. Most models that have endeavored to…”
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Long-term variability in N 2 O emissions and emission factors for corn and soybeans induced by weather and management at a cold climate site by Baral, Khagendra R, Jayasundara, Susantha, Brown, Shannon E, Wagner-Riddle, Claudia

“…Nitrous oxide (N O) emissions are highly variable in space and time due to the complex interplay between soil, management practices and weather conditions…”
Get full text

Micrometeorological measurements over 3 years reveal differences in N 2 O emissions between annual and perennial crops by Abalos, Diego, Brown, Shannon E., Vanderzaag, Andrew C., Gordon, Robert J., Dunfield, Kari E., Wagner‐Riddle, Claudia

“…Perennial crops can deliver a wide range of ecosystem services compared to annual crops. Some of these benefits are achieved by lengthening the growing season,…”
Get full text