Search Results - "Graham, Scott L"

Soil Hydraulic Modeling Outcomes with Four Parameterization Methods: Comparing Soil Description and Inverse Estimation Approaches by Graham, Scott L., Srinivasan, M.S., Faulkner, Nathalie, Carrick, Sam

“…Core Ideas Soil hydraulic model outcomes are sensitive to the data source used for parameterization. Inverse parameter estimation from field data improved…”
Get full text

Effects of soil warming and nitrogen addition on soil respiration in a New Zealand tussock grassland by Graham, Scott L, Hunt, John E, Millard, Peter, McSeveny, Tony, Tylianakis, Jason M, Whitehead, David

“…Soil respiration (RS) represents a large terrestrial source of CO2 to the atmosphere. Global change drivers such as climate warming and nitrogen deposition are…”
Get full text

A method for predicting hydrogen and oxygen isotope distributions across a region's river network using reach-scale environmental attributes by Dudley, Bruce D, Yang, Jing, Shankar, Ude, Graham, Scott L

“…Stable isotope ratios (isotope values) of surface water reflect hydrological pathways, mixing processes, and atmospheric exchange within catchments…”
Get full text

Irrigation increases forage production of newly established lucerne but enhances net ecosystem carbon losses by Laubach, Johannes, Hunt, John E., Graham, Scott L., Buxton, Rowan P., Rogers, Graeme N.D., Mudge, Paul L., Carrick, Sam, Whitehead, David

“…In New Zealand, dairy farming faces increasing scrutiny for its environmental impacts, including those on soil carbon (C) stocks; hence, alternative management…”
Get full text

Effects of agricultural management on measurements, prediction, and partitioning of evapotranspiration in irrigated grasslands by Graham, Scott L., Kochendorfer, John, McMillan, Andrew M.S., Duncan, Maurice J., Srinivasan, M.S., Hertzog, Gladys

“…•Evapotranspiration (ET) was 13% greater for pasture compared to ryegrass seed crop.•Grazing had little impact on actual ET in a pasture.•Final harvest reduced…”
Get full text

Attributing Controlling Factors of Acidification and Hypoxia in a Deep, Nutrient-Enriched Estuarine Embayment by Zeldis, John R., Currie, Kim I., Graham, Scott L., Gall, Mark P.

“…Measuring and attributing controlling factors of acidification and hypoxia are essential for management of coastal ecosystems affected by those stressors. We…”
Get full text

Water sources for woody shrubs on hillslopes: An investigation using isotopic and sapflow methods by Dudley, Bruce D, Marttila, Hannu, Graham, Scott L, Evison, Ryan, Srinivasan, M.S

“…Shrub encroachment into grasslands is a globally occurring process, but resulting changes to catchment water flows and stores are not yet well understood. We…”
Get full text

Phosphorus transport in subsurface flow from a stony soil under irrigated and non-irrigated lucerne by Gray, Colin W., McDowell, Richard W., Graham, Scott L., Hunt, John E., Laubach, Johannes, Rogers, Graeme N. D., Carrick, Sam, Whitehead, David

“…The extent of phosphorus (P) loss from soils under deep rooting crops such as lucerne is currently unknown. This study used large lysimeters (2.0 by 1.5 m) to…”
Get full text

Soil carbon availability affects nitrogen transformation under irrigated lucerne by NASCENTE, Adriano S., NUÑEZ, Jonathan, GRAHAM, Scott L., MOINET, Gabriel Y.K., HUNT, John E, ROGERS, Graeme N.D., WHITEHEAD, David

Get full text

Assessing the potential of diverse pastures for reducing nitrogen leaching by Graham, Scott L., Pronger, Jack, Laubach, Johannes, Hunt, John E., Rogers, Graeme N. D., Carrick, Sam, Whitehead, David, McLeod, Malcolm, Mitchell, Grace, Mudge, Paul

“…Mitigation practices for nitrogen leaching losses from livestock agriculture are needed to protect freshwater quality and increase the efficiency of…”
Get full text

Roots affect the response of heterotrophic soil respiration to temperature in tussock grass microcosms by Graham, Scott L., Millard, Peter, Hunt, John E., Rogers, Graeme N. D., Whitehead, David

“…• Aims and Background While the temperature response of soil respiration (RS) has been well studied, the partitioning of heterotrophic respiration (RH) by soil…”
Get full text

Mitigation potential and trade-offs for nitrous oxide emissions and carbon balances of irrigated mixed-species and ryegrass-clover pastures by Laubach, Johannes, Hunt, John E., Graham, Scott L., Buxton, Rowan P., Rogers, Graeme N.D., Mudge, Paul L., Goodrich, Jordan P., Whitehead, David

“…•Split-footprint approach for CO2 eddy flux was corroborated by direct measurements.•Split-footprint approach for N2O quantified emissions difference of two…”
Get full text

Effects of dairy farming management practices on carbon balances in New Zealand’s grazed grasslands: Synthesis from 68 site-years by Wall, Aaron M., Laubach, Johannes, Campbell, David I., Goodrich, Jordan P., Graham, Scott L., Hunt, John E., Mudge, Paul L., Whitehead, David, Schipper, Louis A.

“…Globally, the soils underlying managed grasslands are an important reservoir of carbon (C), with the management of the land strongly influencing whether the…”
Get full text

Predicting soil water balance for irrigated and non-irrigated lucerne on stony, alluvial soils by Graham, Scott L., Laubach, Johannes, Hunt, John E., Eger, Andre, Carrick, Sam, Whitehead, David

“…Evaporation, soil water content and soil drainage were modelled with HYDRUS-1D. Results were compared to measurements by eddy covariance, soil moisture sensors…”
Get full text

Methane emissions from animal agriculture: Micrometeorological solutions for challenging measurement situations by Laubach, Johannes, Flesch, Thomas K., Ammann, Christof, Bai, Mei, Gao, Zhiling, Merbold, Lutz, Campbell, David I., Goodrich, Jordan P., Graham, Scott L., Hunt, John E., Wall, Aaron M., Schipper, Louis A.

“…•Micrometeorological methods can quantify CH4 livestock emissions with 10 % accuracy.•They allow continuous emission measurements without affecting animal…”
Get full text

Irrigation and grazing management affect leaching losses and soil nitrogen balance of lucerne by Graham, Scott L., Laubach, Johannes, Hunt, John E., Mudge, Paul L., Nuñez, Jonathan, Rogers, Graeme N.D., Buxton, Rowan P., Carrick, Sam, Whitehead, David

“…Intensification of agricultural management practices, including irrigation and addition of nitrogen (N) fertilizers, can lead to enhanced N leaching and loss…”
Get full text

Addition of sorptive mineral phases to soils decreases short‐term organic matter decomposition by reducing microbial access to substrates by Nuñez, Jonathan, Moinet, Gabriel Y. K., Graham, Scott L., Turnbull, Matthew H., Grelet, Gwen‐Aëlle, Whitehead, David

“…There is increasing evidence that the accessibility of soil organic matter (SOM) to microbial decomposers is more important than chemical recalcitrance for…”
Get full text

Evaluation of the potential for nine established and emerging interventions to reduce soil carbon losses and increase stocks in grazing systems: A case study for Aotearoa New Zealand by Whitehead, David, McNally, Samuel R., Graham, Scott L., Pronger, Jack, Wall, Aaron M., Isson, Terry, Beare, Mike H., Tozer, Katherine N., Doole, Graeme J., Murray, Shevani, Mudge, Paul L., Schipper, Louis A.

“…This article reviews nine soil carbon interventions to reduce soil carbon losses or increase stocks in grazing management systems, using their potential…”
Get full text

Mineralizable nitrogen and denitrification enzyme activity drive nitrate concentrations in well-drained stony subsoil under lucerne (Medicago sativa L.) by Nuñez, Jonathan, Orwin, Kate H., Moinet, Gabriel Y.K., Graham, Scott L., Rogers, Graeme N.D., Turnbull, Matthew H., Clough, Timothy J., Dopheide, Andrew, Davis, Carina, Grelet, Gwen-Aëlle, Whitehead, David

“…Nitrogen (N) inputs to agricultural systems contribute substantially to soil nitrate (NO3−) concentrations, which increase NO3− leaching and contamination of…”
Get full text

FLUXNET-CH 4 : a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands by Delwiche, Kyle B., Knox, Sara Helen, Malhotra, Avni, Fluet-Chouinard, Etienne, McNicol, Gavin, Feron, Sarah, Ouyang, Zutao, Papale, Dario, Trotta, Carlo, Canfora, Eleonora, Cheah, You-Wei, Christianson, Danielle, Alberto, Ma. Carmelita R., Alekseychik, Pavel, Aurela, Mika, Baldocchi, Dennis, Bansal, Sheel, Billesbach, David P., Bohrer, Gil, Bracho, Rosvel, Buchmann, Nina, Campbell, David I., Celis, Gerardo, Chen, Jiquan, Chen, Weinan, Chu, Housen, Dalmagro, Higo J., Dengel, Sigrid, Desai, Ankur R., Detto, Matteo, Dolman, Han, Eichelmann, Elke, Euskirchen, Eugenie, Famulari, Daniela, Fuchs, Kathrin, Goeckede, Mathias, Gogo, Sébastien, Gondwe, Mangaliso J., Goodrich, Jordan P., Gottschalk, Pia, Graham, Scott L., Heimann, Martin, Helbig, Manuel, Helfter, Carole, Hemes, Kyle S., Hirano, Takashi, Hollinger, David, Hörtnagl, Lukas, Iwata, Hiroki, Jacotot, Adrien, Jurasinski, Gerald, Kang, Minseok, Kasak, Kuno, King, John, Klatt, Janina, Koebsch, Franziska, Krauss, Ken W., Lai, Derrick Y. F., Lohila, Annalea, Mammarella, Ivan, Belelli Marchesini, Luca, Manca, Giovanni, Matthes, Jaclyn Hatala, Maximov, Trofim, Merbold, Lutz, Mitra, Bhaskar, Morin, Timothy H., Nemitz, Eiko, Nilsson, Mats B., Niu, Shuli, Oechel, Walter C., Oikawa, Patricia Y., Ono, Keisuke, Peichl, Matthias, Peltola, Olli, Reba, Michele L., Richardson, Andrew D., Riley, William, Runkle, Benjamin R. K., Ryu, Youngryel, Sachs, Torsten, Sakabe, Ayaka, Sanchez, Camilo Rey, Schuur, Edward A., Schäfer, Karina V. R., Sonnentag, Oliver, Sparks, Jed P., Stuart-Haëntjens, Ellen, Sturtevant, Cove, Sullivan, Ryan C., Szutu, Daphne J., Thom, Jonathan E., Torn, Margaret S., Tuittila, Eeva-Stiina, Turner, Jessica, Ueyama, Masahito, Valach, Alex C., Vargas, Rodrigo, Varlagin, Andrej, Vazquez-Lule, Alma

“…Methane (CH4) emissions from natural landscapes constitute roughly half of global CH4 contributions to the atmosphere, yet large uncertainties remain in the…”
Get full text