Elucidating the importance of the pools of nitrate in soils on denitrification

Lead Research Organisation: Rothamsted Research
Department Name: Sustainable Soils and Grassland Systems

Abstract

The aim of this study is to determine the factors controlling the utilisation of different pools of N in nitrification and denitrification, namely existing NO3-, newly formed NO3- and added NO3-.
The existence of different pools of NO3- in soils has been suggested through a series of laboratory incubation experiments using a denitrification incubation system, DENIS, at Rothamsted Research, North Wyke. This was observed from data on the isotopic signature of the emitted N2O. It was expected that after application of N and C to soil cores, an increase in the delta15Nbulk-N2O would result due to the preference of the microbes to use the lighter isotope, leaving an enriched pool behind. This increase occurred for several days after N and C application but then a decrease was observed. This change in behavior combined with the use of a model suggested the possible change in the source of NO3- between the added NO3- and the native soil pool. A third NO3- pool, from the nitrification of applied NH4+, can also be a source of N2O via denitrification and also from nitrification. Nitrification and denitrification may occur simultaneously in soil but there is often uncertainty associated with which process dominates in a particular soil under specific conditions.
In order to develop mitigation strategies for N2O emissions, it is necessary to gain knowledge of the sources and processes that produce N2O in soils, and to understand the controlling factors of these processes to specifically target these sources. This study aims to determine the factors controlling the utilization of different NO3- pools in nitrification/denitrification, namely i) existing NO3-, ii) newly formed NO3- and iii) added NO3-. Soil moisture (water filled pore space) and the ratios of applied C:N will be the controlling factors studied and in order to achieve the overall aim, direct measurements of evolved gases N2O, N2, NO, isotopomers of N2O after application of N and C will be carried out by using the laboratory incubation system (DENIS). Also 15N-N2O will be measured when applying a labeled N source.
Isotopomers of N2O describe the location of the 15N on the N2O molecule at natural abundance and are useful for confirmation of the process source. This data will be used in a model to assess the utilization for denitrification of both existing (soil NO3-) and added NO3- to soil at two different ratios of C:N in the added amendment.
Isotope labelling techniques will be applied combined with a model (Müller model) capable of determining rates of simultaneous complex transformations of N, allowing the quantification of reaction rates of nitrification, mineralisation, immobilisation and re-mineralisation in newly formed microbial biomass. This technique will provide an estimate of the source of N2O from nitrified NH4+ and NO3- added.
A further model - the dual porous (macro and micropores) Pore-Cor model will be used to predict the location of hot spots of biological activity at the 10 to 100 um scale in relation to the critical percolation path where the transport of nutrients (N and C) occurs.
Through a combination of direct gaseous measurements (NO, N2O and N2) and isotopic techniques, via labelling and use of stable isotopes, it will be possible to differentiate between the different pools of NO3- involved in the process of denitrification. The project will achieve model refinements and insights gained from three mathematical models; and finally will provide recommendations for soil management to reduce N2O emissions.

Technical Summary

The existence of different pools of NO3- in soils has been suggested through laboratory experiments using a denitrification incubation system, DENIS, at Rothamsted Research, North Wyke. This was observed from isotopomer (location of the 15N at the central, alpha or peripheral, beta N of the N2O molecule at natural abundance levels) data of the N2O emitted after application of C and N to soil cores. The data suggested when combined with a Rayleigh-type model that there were two pools of NO3- for N2O production represented by existing (soil NO3-) and fresh NO3- added as fertiliser. A third NO3- pool, from the nitrification of applied NH4+, can also be a source of N2O via denitrification and also from nitrification. Nitrification and denitrification may occur simultaneously in soil but there is often uncertainty associated with which process dominates in a particular soil under specific conditions. This study aims to determine the factors controlling the utilization of different NO3- pools in nitrification/denitrification, namely i) existing NO3-, ii) newly formed NO3- and iii) added NO3-. Isotopomers of N2O will be used with the Rayleigh-type model to assess the utilization of both existing and added NO3- to soil at two different ratios of C:N in the added amendment. Triple isotope labelling (15N-NH4+, 15N-NO3-, 15NH415NO3) will be applied combined with a model (Müller model) to quantify N transformation rates. This technique will provide an estimate of the source of N2O from nitrified NH4+ and NO3- added. A further model - the dual porous Pore-Cor model will be used to predict the location of hot spots of biological activity at the 10 to 100 um scale in relation to the critical percolation path where the transport of added nutrients (N and C) occurs. This project will provide a better understanding of the relative importance of different sources of N2O in a grassland soil and possible switch between NO3- pools to help develop mitigation strategies for N2O.

Planned Impact

The outputs of this research will impact on society and the economy by influencing:

Scientific community:
This research will inform scientists working in similar areas of research by providing understanding of the processes and N pools utilisation originating gaseous emissions from agricultural soils. It will provide tools for expanding the knowledge and understanding of soil processes by the use of a combination of experimental techniques and models at the soil core scale. This project will directly impact our national collaborators, Dr. Catherine Watson from AFBI in Northern Ireland by providing data for ring testing of the gaseous emissions and isotope data and our international collaborators Prof. Christoph Müller from University Giessen in Germany and Reinhard Well from the Johann Heinrich von Thünen Institute in Germany on the application of their models and isotopomers data to aid interpretation of the results. It will also provide the opportunity to continue to improve the Pore-Cor model with the University of Plymouth and to gain understanding of the effect of the proximity of pools to microbes on emissions.

Current national (Prof. G.P. Matthews in Plymouth) and international collaborations (with Prof. A. Vallejo from the Polytechnic University of Madrid, Dr. M. Alfaro from INIA in Chile and Prof. Reinhard Well in Germany) will be maintained and new ones developed (Dr. C. Watson from AFBI and Prof. C.Müller in Germany) and during this project to raise awareness of this project beyond Rothamsted Research. This will be done in combination with Laura's role within the ISPG and the Defra greenhouse gas platform within which she has an important role (Defra projects AC0112, AC0114, AC0116, web site: http://www.ghgplatform.org.uk/

As a multidisciplinary study, this project is an opportunity for the various expertises to influence the outcome to the best of their knowledge. The project team will benefit in the combined use of experiments and models increasing their skills in mechanistic studies. Experiments will be presented at the institute's yearly tour of experiments to colleagues from Rothamsted Research.

Attendance to two International conferences will help disseminate results from the project as well as generate interest for future work. The Nitrogen Workshop which gathers researchers mostly from Europe on nitrogen. The EGU, which covers a wider range of subject areas and although it is an European meeting, it is also attended by researchers from outside Europe.

Policy community:
The results from the effect of water filled pore space and applied C:N ratios studies will suggest mitigation strategies for greenhouse gases that can be further tested at the field scale. Recommendations will be provided in the peer reviewed publications.
Laura Cardenas is part of the greenhouse gas platform that Defra has funded, and is regularly invited to give oral presentations to various audiences; including policy people, farmers and industry in general and these will provide opportunities to communicate the findings of this project.

Wider community:
A web page on the institute's web site will provide information on the project and its results.
A presentation in the school's science week at North Wyke will be carried out in the second year of the project.

Publications

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Barrett M (2016) Carbon amendment and soil depth affect the distribution and abundance of denitrifiers in agricultural soils. in Environmental science and pollution research international

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Buckingham S (2014) Review and analysis of global agricultural N2O emissions relevant to the UK. in The Science of the total environment

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Cardenas L (2013) Potential mineralization and nitrification in volcanic grassland soils in Chile in Soil Science and Plant Nutrition

 
Description We studied extensively the use of nitrogen (N) pools in soils during this project. Using the gas-flow-soil-core method, combined with 15N labelled isotopic techniques that in a UK grassland soil under high soil moisture after the application of nitrate and glucose to support denitrification, a reductive process, nitric oxide (NO) was up 0.67% of the added N (Loick et al., 2016), normally considered a product of nitrification, an oxidative process. We determined that 85% of the emitted N2O came from the added N and 15% from the soil N under high moisture conditions.
Barrett et al. (2015) found a good correlation between abundance of denitrifier genes and nitrous oxide (N2O) and nitrogen gas (N2) fluxes. Glucose-C amendment favoured partial denitrification (more N2O), whilst dissolved organic carbon (DOC) amendment, resulted in complete denitrification (N2 emissions). We showed that fungal denitrification can be an important source of N2O emissions and generally, under high denitrification potential conditions, nitrification inhibitors can be effective in decreasing these losses.
We assessed mitigation strategies for N2O emissions: acidifying and adding a nitrification inhibitor to slurry caused a reduction in emissions (Owusu-Twum et al., 2017). The presence of cover crops increased N2O losses during the intercropping period, but the effect was low over the whole cropping cycle. The use of nonlegume and legume cover crops combined with integrated soil fertility management (ISFM) could be considered an efficient practice from both environmental and agronomic points of view (Guardia et al., 2016). Also, adding straw with N-fertiliser caused an increased effect at basal fertilisation and a decrease in top-dressing on N2O emissions showing interaction between N sources that needs to be considered when deciding N requirements in a crop (Xu et al., 2019). In tropical grazed land, we found that adequate vegetative cover was a positive factor to reduce emissions. In an upland grazed temperate climate soil nitrification rates were low due to low pH suggesting change in EF splitting upland vs lowland soils should be considered in the UK GHG inventory.
On grazed grassland, we found from a global meta-analysis (Lopez et al., 2020) that mean air temperature, soil pH and ruminant animal species (sheep or cow) were significant factors influencing N2O EFs. However, several factors that are known to influence N2O emissions, such as animal diet and urine composition, could not be considered due to the lack of reported data, so we provided recommendations for the type of data that needs to be included in studies.
We established that historical soil management influences the transformations occurring in N cycling. Using a combination of a high-tech 15N stable isotope tracing technique with quantitative PCR (qPCR) we found on a sandy-loam soil that had been fertilised for 3 years with ammonium that nitrification (autotrophic and heterotrophic) vs denitrification as sources of N2O were 49.0-58.0% and 42.0-51.0%, respectively (Castellano et al., 2020). When the soil had been fertilised with nitrate 84.0-99.0% of N2O came from denitrification. Soil moisture affected the portioning of the sources of N2O: heterotrophic nitrification (organic N oxidation to nitrate) was an important source at 55% water filled pore space (WFPS), whilst autotrophic nitrification (oxidation of ammonium to nitrate) was more important at 70% WFPS. Denitrification was dominant at 85% WFPS (Loick et al., 2021). We found in sub-tropical climate that heterotrophic nitrification was a major source of nitrate in forest soils and DNRA a major sink, whereas autotrophic nitrification was a dominant source in cropped soils.
From published studies, we concluded that historical soil moisture and the degree to which soil is rewetted after drought are significant factors on N2O emissions (Barrat et al., 2020). The effect of rewetting on N, C and P cycling demonstrated that microbial biomass carbon was resilient to drought whilst microbial biomass phosphorus developed this resilience later (Pezzola et al., 2019).
Our studies on spatial variability of emissions showed that localised higher N concentrations (hot spots), caused a decrease in NO emissions and resulted in a delay in N2O and N2 emissions, suggesting that the plant could take up N, decreasing losses (Loick et al., 2017). In two spatial field studies, we determined that under extensive management soil nitrate content and type of vegetation were significantly affecting emissions; whilst under intensive management it was soil moisture and bulk density that were driving factors (Charteris et al., 2021).
Exploitation Route The results and experimental developments from this project have resulted not only in multiple publications, but also collaborations that included training of many students, at PhD and master's level; also visiting researchers from universities and institutes from different parts of the world. These individuals have gone to jobs, where they are developing their own research, and have invited members of this project team to contribute to project proposals, for example in Denmark, Chile, etc. They have also given the stepping stone to the development of a new gas incubation system that is being constructed under our ISP funded by BBSRC Soils to Nutrition and that includes the plant. The methods developed in this project will be applied in the new system to investigate the utilisation of N pools in the whole plant/soil system.
Sectors Agriculture, Food and Drink,Environment

 
Description The outcomes from this project have contributed to various presentations to industry and policy. At the 2019 International Fertiliser Society conference, the work on the use of nitrification inhibitors in agriculture was presented. Influence on policy has occurred via the inventory of greenhouse gases; we have influenced National and International policy through changes on the inventory of greenhouse gases that was approved by an UNFCCC panel. We have also contributed to climate change policy in a Policy Brief which recommends mitigation options for policy makers and as a member of the Task Force for Devon, which is developing measures for local government to implement to achieve Net Zero Carbon.
First Year Of Impact 2020
Sector Agriculture, Food and Drink,Environment
Impact Types Societal,Economic,Policy & public services

 
Description Revision of emission factors for the greenhouse gas inventory in the UK
Geographic Reach Multiple continents/international 
Policy Influence Type Citation in other policy documents
Impact The UK is an Annex I country for the reporting of greenhouse gas emissions to the United Framework Convention for Climate change. As such, the UK is committed to reducing its emissions according to International Agreements (for ex. the Kyoto protocol). The development of new Emission Factors for agriculture has a impact not only on the accounting of national emissions, but also on the application of mitigation strategies from the understanding on where the emissions come from, also to show compliance with the international demands for reduction.
 
Description GPLER Discovery of new nitrification inhibitors to mitigate nitrous oxide emissions in grazed pastures
Amount $25,500 (NZD)
Organisation Global Partnerships in Livestock Emissions Research 
Sector Public
Country New Zealand
Start 07/2018 
End 06/2019
 
Description Ricardo NAEI: Literature review of emissions of NOx from agriculture
Amount £19,945 (GBP)
Organisation Rothamsted Research 
Sector Academic/University
Country United Kingdom
Start 08/2019 
End 12/2019
 
Description STARS Centre for Doctoral Training-Harry Barrat
Amount £50,000 (GBP)
Funding ID NE/M009106/1 
Organisation Natural Environment Research Council 
Sector Public
Country United Kingdom
Start 09/2017 
End 03/2021
 
Description Soils to Nutrition, S2N as a Co-I
Amount £8,500,000 (GBP)
Funding ID S2N ISPG 
Organisation Biotechnology and Biological Sciences Research Council (BBSRC) 
Sector Public
Country United Kingdom
Start 04/2017 
End 03/2022
 
Title Continuous measurements of labelled 15N-N2O from incubated soil cores 
Description We have developed the laboratory incubation system at RRES North Wyke to link to a Mass Spectrometer to which gas samples are continuously sent for analysis. The system is automated and samples are sent via computer controlled valves to the mass spec. 
Type Of Material Improvements to research infrastructure 
Year Produced 2014 
Provided To Others? No  
Impact We can now determine the source of N2O from soil, and assess the contribution from soil N and added N (as fertiliser) 
 
Title Soil analysis of 15N in nitrate, nitrite and ammonium 
Description We are now able to measure the enrichment of soil samples in various N forms, nitrate, nitrite and ammonium 
Type Of Material Improvements to research infrastructure 
Year Produced 2014 
Provided To Others? No  
Impact With this technique and the measurements of 15N2O we can apportion the distribution of N in soil and estimate rates of transformations; nitrification, denitrification, mineral;isation, immobilisation 
 
Title Database of nitrous oxide emissions from the application of livestock urine to soils in a lab incubation 
Description Several incubations were carried out where sheep urine was applied to soil under different conditions of temperature, soil moisture, N concentration and volume of urine, soil type. Data comprises Nitrous oxide, nitrogen gas, nitric oxide, carbon dioxide and methane emissions as well as soil N, C and microbiology 
Type Of Material Database/Collection of data 
Year Produced 2019 
Provided To Others? Yes  
Impact This data is been used to inform a model that will comprise different parameters from this project, including field emissions, vegetation, soil physical and chemical parameters. Also included is urine composition and potential relationship to pasture consumed by livestock. The data is also been used in statistical analysis including multivariate and Taguchi. 
 
Title Gaseous emissions from incubated soils 
Description High temporal resolution datasets of emissions of NO, N2O, N2 and CO2 as well as isotopomers of N2O have been produced as a result of this project, available for modelling purposes. Also soils data. 
Type Of Material Database/Collection of data 
Year Produced 2014 
Provided To Others? Yes  
Impact Datasets have been provided for modelling purposes resulting in at least 2 publications: Wu Di et al., 2016, N2O source partitioning in soils using 15N site preference values corrected for the N2O reduction effect, RCMS 30, 620-626; Lewicka-Szczebak et al., 2015, Isotope fractionation factors controlling isotopocule signatures of soil-emitted N2O produced by denitrification processes of various rates. 
 
Title New emission factors for nitrous oxide and methane emissions from agriculture in the UK 
Description From a large programme of research, we have developed new emission factors for nitrous oxide emissions from soils and manure; methane emissions from livestock and manures. 
Type Of Material Database/Collection of data 
Year Produced 2017 
Provided To Others? Yes  
Impact The data has been included in the inventory of greenhouse gases from the UK to estimate emissions 
URL http://www.environmentdata.org/archive/ghgno:676
 
Description Collaboration with Dr. Christoph Muller from Giesen, Germany 
Organisation Justus Liebig University Giessen
Country Germany 
Sector Academic/University 
PI Contribution we discussed results from previous work using isotope labelling and future work with Bristol University
Collaborator Contribution Dr. Muller visited North Wyke
Impact A project proposal was written and submitted to BBSRC
Start Year 2019
 
Description Collaboration with research group in Galicia, Spain 
Organisation University of Mabegondo, Galicia
Country Spain 
Sector Academic/University 
PI Contribution A PhD student Miss Claudia Gilsanz has visited for 3 months to get training in the lab and develop a complementary technique for analysis or microbial biomass in our laboratory experiments.
Collaborator Contribution The student has received training in laboratory techniques, and learnt background theory in isotopes as well as learnt to run samples in a Mass spectrometer. We have benefited through her implementation of laboratory techniques to measure microbial biomass in soils. Their contribution in kind amounts to 4500 euros.
Impact A new protocol for our laboratory has been developed for measuring microbial biomass in soils. the visiting student is a chemist complementing well the project postdoc background as a microbiologist.
Start Year 2014
 
Description Collaboration with research group in Madrid, Spain 
Organisation Technical University of Madrid
Country Spain 
Sector Academic/University 
PI Contribution We have provided training to a post doc from the Spanish university Dr. Diego Abalos on isotopes and laboratory measurements of gases. We have also introduced the concept of modelling to the same postdoc. Both the project postdoc (Nadine Loick) and visiting postdoc attended a modelling course; Mathematical Modelling for Biologists Summer School; in the University of Nottingham, UK on 14-17/07/2014. We also had a 2 weeks visit from the head of the group in Madrid, Prof. Antonio Vallejo who has contributed to the project and publications (in press and in preparation).
Collaborator Contribution The Spanish postdoc visited our lab and spent 3 months working alongside us. In addition to contributing to the deployment of the experiments he and his supervisor in Madrid are contributing to the preparation of at least 2 manuscripts for publication. His Professor Antonio Vallejo also visited for 10 days to discuss results and paper writing. Both their contributions in kind amounts to a total of 16,000 euros.
Impact Outcomes: active participation in experiments with preparation of 2 manuscripts for publication. The collaboration includes experts in agronomy, soils, microbiology, isotopes, atmospheric chemistry.
Start Year 2014
 
Description Collaboration with research group in Northern Ireland 
Organisation Agri-Food and Biosciences Institute
Country United Kingdom 
Sector Public 
PI Contribution A two-day visit to the AFBI lab in Northern Ireland and discussion over a laboratory intercomparison of techniques was carried out. This visit also included training in the preparation of standards for isotope measurements. Collaboration includes Dr. Catherine Watson, Dr. Karen McGeough
Collaborator Contribution They provided us with training and are contributing to manuscript writing and publication. Their contribution in kind amounts to £2,000.
Impact Outcome: staff training in Northern Ireland on development of isotope measurements at North Wyke
Start Year 2013
 
Description Continue research into Isotopocules of Nitrous Oxide 
Organisation Julich Research Centre
Country Germany 
Sector Academic/University 
PI Contribution We have collected gas samples from the incubations and the results of the analyses of the isotopocules have been discussed with other researchers in Germany. Data are also been used to validate models. Publications are been produced from this data (Wu Di et al., 2016).
Collaborator Contribution Dr. Roland Bol Helped with the interpretation of the results from the isotopocule data and write up in paper.
Impact Wu Di et al., 2016: N2O source partitioning in soils using 15N site preference values corrected for the N2O reduction effect, RCMS 30, 620-626
Start Year 2014
 
Description Nitrous Oxide Guidelines for field measurements 
Organisation AgResearch
Country New Zealand 
Sector Academic/University 
PI Contribution Recruited a post doc to analyse existing data to develop 1 chapter of the guidelines for measuring emissions at the field scale
Collaborator Contribution The partners have regular Skype sessions to discuss progress of the guidelines
Impact information for recommendations on how to make measurements at the field scale is being collated for publication
Start Year 2018
 
Description Sustainability of environmental and agronomic practices 
Organisation University of Lisbon
Country Portugal 
Sector Academic/University 
PI Contribution We have provided training to a PhD student from Lisbon University Mr Maxwell Owusu-Twum in measurements of emissions in the laboratory. The student also carried out an experiment to assess mitigation options for N2O emissions for which he received assistance from both the PI and post doc from the project (Laura Cardenas and Nadine Loick). This collaboration will be part of the student's PhD thesis and will result in a publication.
Collaborator Contribution The student is preparing a manuscript for publication from his experiment to which both PI and post doc from the project (Laura Cardenas and Nadine Loick) will be coauthors.
Impact Publication in preparation
Start Year 2014
 
Description Use of isotopes to study N transformations 
Organisation INIA Uruguay
Country Uruguay 
Sector Academic/University 
PI Contribution Training of a Visiting Research Worker Dr. Veronica Ciganda from INIA in isotopes and gas measurements.
Collaborator Contribution Partner will contribute to manuscripts, abstract to conference submitted
Impact Manuscript in preparation
Start Year 2014
 
Description Use of isotopes to study N transformations 
Organisation Institute of Agricultural and Fishing Research and Training
Country Spain 
Sector Academic/University 
PI Contribution Training of the postdoc Dr. Miguel Angel Repullo, in isotopes and gas measurements in the lab.
Collaborator Contribution Contribution to manuscript in preparation
Impact Manuscript in preparation and abstract submitted to conference
Start Year 2014
 
Description Use of isotopes to trace N transformations 
Organisation University of Navarra
Country Spain 
Sector Academic/University 
PI Contribution We have provided training to a PhD student Miss Maria Lopez in isotopes and gas measurements in laboratory incubations.
Collaborator Contribution Partners will contribute to the publications arising from this project
Impact Publication in preparation, abstract to a conference
Start Year 2015
 
Description Use of isotopomers for source identification 
Organisation Julich Research Centre
Country Germany 
Sector Academic/University 
PI Contribution We have provided training to a PhD student from Julich Mr Wu Di on isotopes and laboratory measurements of gases. We have also contributed to a publication that comprises datasets from our laboratory incubations (Di Wu et al, RCMS, 2016)
Collaborator Contribution Publication was achieved before the student visit to North Wyke
Impact N2O source partitioning in soils using 15N site preference values corrected for the N2O reduction effect by Wu et al, in Comm. Mass spec. I press
Start Year 2014
 
Description 3rd Conference of Greenhouse Gas Emissions in Animal Agriculture Production Systems of Latin America (GALA 2017) 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact This conference gathers researchers in Latin America working on greenhouse gases and agriculture. Laura Cardenas gave 2 presentations: 'N2O emissions pathways from soils under grazing'; 'What and How' during the conference that took place in October 4th to 6th, 2017 in Colonia, Uruguay
Year(s) Of Engagement Activity 2017
 
Description AAB Conference on Sustainable Intensification, Harpenden, 28-30 November 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact Presentation of paper: Charteris, A., Loick, N., Marsden, K., Chadwick, D., Mead, A., Cardenas. L. (2017) Using factorial laboratory incubation experiments to develop simple indicators of greenhouse gas fluxe
Year(s) Of Engagement Activity 2017
 
Description Attended virtual seminar: Dr Kate Lonsdale, UK Climate Resilience Champion: Creating climate resilience in the UK: What does this mean, and how might we achieve it? 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Professional Practitioners
Results and Impact Part of the UK Climate Resilience webinar series - supported by NERC
Year(s) Of Engagement Activity 2020
 
Description Conference of Global DNDC Network 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of the paper: Jagadeesh B. Yeluripati, Agustin del Prado, Bob Rees, Changsheng Li, Dave Chadwick, Emma Tilston, Kairsty Topp, Laura Cardenas, Pete Ingraham, Sarah Gilhespy, Steven Anthony, Sylvia H. Vetter, Tom Misselbrook, William Salas and Pete Smith. Global Research Alliance Modelling Platform (GRAMP): An open web platform for modelling greenhouse gas emissions from terrestrial ecosystems at the 2013 Conference of Global DNDC Network with a DNDC Training Workshop (dndc2013), Beijing, 14/9/13
Year(s) Of Engagement Activity 2013
 
Description European Geophysical Union 2013 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Boon, A., Robinson, J.S., Cardenas, L.C., Chadwick, D., Verhoef, A. Subsurface concentrations and surface emissions of greenhouse gases from a seasonally waterlogged peatland in the UK at the EGU Vienna, May 2013
Year(s) Of Engagement Activity 2013
 
Description European Geosciences Union General Assembly 2017 (EGU) - Vienna, 23rd-28th April 2017 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact Presentation on paper: Charteris, Loick, Marsden, Chadwick, Whelan, Rao-Ravella, Mead, Cardenas. Laboratory incubation experiments assessing the factor interactions affecting urine-derived nitrous oxide emissions from spatially and temporally variable upland pastures
Year(s) Of Engagement Activity 2017
 
Description European Geosciences Union General Assembly 2017 (EGU) - Vienna, 23rd-28th April 2017 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact Presentation on paper: Loick, Dixon, Repullo, Ciganda, Lopez-Aizpun, Matthews, Mueller, Cardenas. Using the Triple Labelling Technique to apportion N2O Emissions to Nitrification and Denitrification from different Nitrogen Sources at different Water-Filled-Pore-Spaces
Year(s) Of Engagement Activity 2017
 
Description Global Farm Platform Conference (2016) 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Dunn et al, Greenhouse gas emissions from a reseeded grassland on the North Wyke Farm Platform, at the GFP conference in Bristol 2016.
Year(s) Of Engagement Activity 2016
 
Description Global Farm Platform conference, 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Cardenas et al., Grazing behaviour, urine composition and soil properties are key drivers of nitrous oxide emissions from livestock urine in the uplands (Uplands-N2O) at the GFP, Bristol, January 2016
Year(s) Of Engagement Activity 2016
 
Description Global Farm Platform conference, 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Harris et al, Data Mining the North Wyke Farm Platform Data Sets, at the GFP conference in Bristol 2016
Year(s) Of Engagement Activity 2016
 
Description Greenhouse Gas and Animal Agriculture conference 2013 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Yeluripati, J., Li, C., Chadwick, D., Tilston, E., Topp, K., Cardenas, L., Gilhespy, S., Anthony, S., Salas, W., Smith, P. Global Research Alliance Modelling Platform (GRAMP) - developing a unified modelling approach in the context of climate change at the GGAA conference Dublin, 2013
Year(s) Of Engagement Activity 2013
 
Description Greenhouse Gas and Animal Agriculture conference 2013 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Cardenas, L.M., Donovan, N., Hodgson, C., Norris, S., Murray, R., Cancer-Berroya, E., Misselbrook, T., Chadwick, D. Effect of DCD and season of application on N2O emissions from urine patches at the GGAA conference, Dublin, 2013
Year(s) Of Engagement Activity 2013
 
Description Greenhouse Gas and Animal Agriculture conference 2013 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Cardenas, L.M., Misselbrook, T., Donovan, N., Norris, S., Murray, R., Hodgson, C., Cancer-Berroya, E., Chadwick, D. How do N2O fluxes determined using five static closed chambers and an auto-sampler compare? at the GGAA conference in Dublin, 2013
Year(s) Of Engagement Activity 2013
 
Description Greenhouse Gas and Animal Agriculture conference 2013 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Datta, A., Fitton, N., Topp, K., Cloy, J., Rees, B., Williams, J., Thorman, R., Smith, K., Cardenas, L., Smith, P. Simulation of N2O emission from cropland using DailyDAYCENT at the GGAA conference in Dublin, 2013
Year(s) Of Engagement Activity 2013
 
Description Greenhouse Gas and Animal Agriculture conference 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: D.R. Chadwick, L. M. Cardenas, N. Donovan, T. Misselbrook, J. Williams, R. Thorman, K. McGeough, C. Watson, M. Belle, S. Anthony, R.M. Rees. Nitrous oxide emissions from livestock urine and dung at the GGAA conference 14-18 Feb 2016, Melbourne.
Year(s) Of Engagement Activity 2016
 
Description Greenhouse Gas and Animal Agriculture conference 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: L.M. Cardenas, G.P. Matthews, A.S. Gregory, W.R. Whalley, N.R.A. Bird, T. Misselbrook, G.M. Laudone, M.S.Dhanoa and D. Scholefield; Effect of compaction on nitrous oxide and nitrogen emissions from UK soils (Presented by Tom Misselbrook) at the GGAA conference, Melbourne
Year(s) Of Engagement Activity 2016
 
Description Lecture at Exeter University 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact Lecture at Exeter University MSc Food Security
Year(s) Of Engagement Activity 2019,2020
 
Description Postgraduate students visit from Exeter University 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Postgraduate students
Results and Impact around 12 students from University of Exeter visited North Wyke for the day to receive a talk about the work of the site and followed this up with a visit around the site
Year(s) Of Engagement Activity 2017,2018,2019
 
Description Presentation at AGU Fall meeting 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Di, Cárdenas, Calvet Sanz, Brüggemann, Loick, Liu, Bol. The impact of nitrification inhibitor DMPP on N2O, NO and N2 emissions at different soil moisture conditions in grassland soil at the AGU Fall meeting. San Francisco 12-16 December 2016
Year(s) Of Engagement Activity 2016
 
Description Presentation at AGU Fall meeting 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of the paper: Rees, Misselbrook, Cardenas, Topp, Watson, Williams, Dragosits, Carnell, Skiba, Manning, Chadwick, Improving Nitrous Oxide Reporting in Agricultural Inventories of Greenhouse Gas Emissions: A UK Case Study at AGU Fall meeting. San Francisco 12-16 December 2016
Year(s) Of Engagement Activity 2016
 
Description Presentation at AGU Fall meeting 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of the paper: Carnell, Meneguz, Skiba, Misselbrook, Cardenas, Arnold, Manning and Dragosits. "Verifying the UK agricultural N2O emission inventory with tall tower measurements" at AGU Fall meeting. San Francisco 12-16 December 2016
Year(s) Of Engagement Activity 2016
 
Description Presentation at SSSA workshop 2014 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: L. M. Cardenas, D.R . Chadwick, T. H. Misselbrook, N. Donovan, K. A. Smith, R. M. Rees , M. Bell, C . J . Watson , K. L. McGeough, G. McNeill, R. Williams, J. M. Cloy , R. E. Thorman, M. S. Dhanoa. Case study: grasslands/arable - issues and solutions, research networks at the SSSA meeting: Annual Meeting Grand Challenges-Great Solutions November 2-5, 2014 Long Beach, CA
Year(s) Of Engagement Activity 2014
 
Description Presentation at a workshop: Reusewaste 2014 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact An invited presentation to the workshop for the EU funded project Reusewaste in Lisbon by Loick: The DENitrification Incubation System (DENIS)
Year(s) Of Engagement Activity 2014
URL http://www.reusewaste.eu/reusewaste-news/newsletter/?newsletter=2631
 
Description Presentation at the 17th International Nitrogen Workshop 2016, Ireland 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: L.M. Cardenas, D. Scholefield, D. Hatch, D. Jhurreea, I. Clark, P. Hirsch, F. Salazar, S. Rao-ravella, M. Alfaro, Potential for N2O emissions from volcanic grassland soils at the 17th International Nitrogen Workshop 26-29 June 2012, Ireland
Year(s) Of Engagement Activity 2012
 
Description Presentation at the 17th International Nitrogen Workshop 2016, Ireland 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: -Alfaro, M., Cardenas, L., Hube, S., Salazar, F., Rosas, A., Ramírez, L. 2012. Desnitrificación de nitrógeno en suelos volcánicos. En: Libro de Resúmenes del XXXVII Congreso de la Sociedad Chilena de Producción Animal. Ortega, F. (ed), 24 al 26 de Octubre, Termas de Catillo. Pp:141-142 at the 17th International Nitrogen Workshop 26-29 June 2012, Ireland
Year(s) Of Engagement Activity 2012
 
Description Presentation at the 17th International Nitrogen Workshop 2016, Ireland 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Chadwick, D., Olave, R., Laughlin, R., Cardenas, L., Williams, J., Skiba, U., Rees, R., Buckingham, S., Topp, K. and Anthony, S. Methodology for the selection of sites and treatments to generate new N O emission factors and model validation in the UK: the prioritisation phase of the InveN2Ory project at the 17th International Nitrogen Workshop 26-29 June 2012, Ireland
Year(s) Of Engagement Activity 2012
 
Description Presentation at the 17th International Nitrogen Workshop 2016, Ireland 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Alfaro, M., Cárdenas, L., Salazar, F., Rosas, A., Vistoso, E., Hube, S., Ramírez L., Nitrogen dynamics in volcanic ash soils with high soil organic matter content at the 17th International Nitrogen Workshop 26-29 June 2012, Ireland
Year(s) Of Engagement Activity 2012
 
Description Presentation at the 18th International Nitrogen Workshop 2016, Lisbon 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Loick, N., Dixon, L., Well, R., Matthews, P., Cardenas, L. EFFECT OF NITROGEN SOURCE ON NITRIC OXIDE AND NITROUS OXIDE EMISSIONS FROM A UK GRASSLAND SOIL at the 18th International Nitrogen Workshop 2014, Lisbon
Year(s) Of Engagement Activity 2014
 
Description Presentation at the 18th International Nitrogen Workshop 2016, Lisbon 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Cardenas L, Camp, V, Donovan, N, Hodgson, C, Misselbrook, T, McGeough, K, McNeill, G, Laughlin, R, Watson, C, Bell, M, Rees, B, Chadwick, D. IMPACT OF A NITRIFICATION INHIBITOR (DCD) ON N2O EMISSIONS FROM URINE APPLIED TO A UK GRASSLAND at the 18th International Nitrogen Workshop 2014, Lisbon
Year(s) Of Engagement Activity 2014
 
Description Presentation at the 18th International Nitrogen Workshop 2016, Lisbon 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Gilhespy, S., S. G. Anthony, L.M. Cardenas, D.R. Chadwick, A. del Prado, C. Li, T.H. Misselbrook, R. Rees, W. Salas, A. Sanz-Cobena, P. Smith, E. L. Tilston, K. Topp, S.H. Vetter & Yeluripati, J. First 20 years of DNDC: Model evolution and GRAMP. at the 18th International Nitrogen Workshop 2014, Lisbon
Year(s) Of Engagement Activity 2014
 
Description Presentation at the 18th International Nitrogen Workshop 2016, Lisbon 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Rees, RM, Cloy JM, Bell M, Watson CJ, McGeough KL, Cardenas L, Williams J, Chadwick D. Nitrous oxide emissions from UK grasslands - measurements and mitigation at the 18th International Nitrogen Workshop 2014, Lisbon
Year(s) Of Engagement Activity 2014
 
Description Presentation at the 18th International Nitrogen Workshop 2016, Lisbon 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Bell MJ, Winning N, Rees RM, Cloy JM, Cardenas L, Williams J, Chadwick D. NITROUS OXIDE EMISSIONS FROM FERTILISED UK ARABLE SOILS: QUANTIFICATION AND MITIGATION at the 18th International Nitrogen Workshop 2014, Lisbon
Year(s) Of Engagement Activity 2014
 
Description Presentation at the 19th International Nitrogen Workshop 2016, Sweden 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Loick, N., Dixon, E.R., Angel-Repullo, M., Ciganda, V., Lopez-Aizpun, M., Matthews G.P., Mueller, C., Cardenas, L.M., THE INFLUENCE OF WATER-FILLED-PORESPACE (WFPS) ON THE APPORTIONING OF N2O EMISSIONS TO NITRIFOCATION OR DENITRIFICATION at the 19th International Nitrogen Workshop 2016, Sweden
Year(s) Of Engagement Activity 2016
 
Description Presentation at the 19th International Nitrogen Workshop 2016, Sweden 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Rachel E. Thorman, Roger Sylvester-Bradley, Kate E. Smith, Daniel R. Kindred, Sarah C. Wynn, Robert M. Rees, Kairsty F. E. Topp, Valentini A. Pappa, Nigel D. Mortimer, Tom H. Misselbrook, Sarah L. Gilhespy, Laura M. Cardenas, Gail Bennett, Steve Malkin and Daniel G. Munro, A NEW APPROACH TO ESTIMATE NITROUS OXIDE EMISSIONS FROM ARABLE CROPS IN THE UNITED KINGDOM? at the 19th International Nitrogen Workshop 2016, Sweden
Year(s) Of Engagement Activity 2016
 
Description Presentation at the 19th International Nitrogen Workshop 2016, Sweden 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: V. S. CIGANDA, M. LOPEZ, M. REPULLO, T. CLOUGH, L. CARDENAS, POTENTIAL INHIBITOR EFFECT OF HIPPURIC ACID ON NITROUS OXIDE EMISSIONS FROM GRASSLAND ON A HEAVY CLAY SOIL at the 19th International Nitrogen Workshop 2016, Sweden
Year(s) Of Engagement Activity 2016
 
Description Presentation at the 19th International Nitrogen workshop 2016, Sweden 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Cardenas, Balzter, Holmberg, Jones, King, Lush, Marsden, Perotto, Whellan, Wilson, Chadwick, GRAZING BEHAVIOUR, URINE COMPOSITION AND SOIL PROPERTIES ARE KEY DRIVERS OF NITROUS OXIDE EMISSIONSFROM LIVESTOCK URINE IN THE UPLANDS (UPLANDS-N2O) at the 19th International Nitrogen Workshop 2016, Sweden.
Year(s) Of Engagement Activity 2016
 
Description Presentation at the EGU Vienna, April 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Ed Carnell, Elena Meneguz, Ute Skiba, Tom Misselbrook, Laura Cardenas, Tim Arnold, Alistair Manning, and Ulli Dragosits, Verifying the UK N2O emission inventory with tall tower measurements at the EGU Vienna, April 2016
Year(s) Of Engagement Activity 2016
 
Description Presentation at the EGU Vienna, April 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of the paper: Laura Cardenas, Nadine Loick, Liz Dixon, Peter Matthews, Claudia Gilsanz, Roland Bol, Dominika Lewicka-Szczebak, and Reinhard Well, Elucidating the impact of nitrate and labile carbon application on spatial heterogeneity of denitrification by 15N modelling at the EGU Vienna, April 2016
Year(s) Of Engagement Activity 2016
 
Description Presentation at the EGU Vienna, April 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Dominika Lewicka-Szczebak, Reinhard Well, Laura Cardenas, Roland Bol, Isotopomer mapping: a new approach to determine N2O production pathways and N2O reduction at the EGU Vienna, April 2016
Year(s) Of Engagement Activity 2016
 
Description Presentation at the EGU Vienna, May 2015 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Rees, RM, Cloy JM, Bell MJ, Watson CJ, McGeough KL, Cardenas L, Williams JR, Chadwick DR. Nitrous oxide emissions from UK grasslands - measurements and mitigation. Crop-Livestock-Forest systems conference in Brazil. ORAL PRESENTATION by Bob Rees at EGU 2015.
Year(s) Of Engagement Activity 2015
 
Description Presentation at the EGU Vienna, May 2015 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Denitrification as a Source of NO Emissions using Isotope Techniques. Laura Cardenas, Nadine Loick, Diego Abalos, Liz Dixon, Antonio Vallejo, Catherine Watson, Karen McGeough, Reinhard Well, and Peter Matthews. ORAL PRESENTATION by L. Cardenas at EGU 2015
Year(s) Of Engagement Activity 2016
 
Description Presentation at the EGU Vienna, May 2015 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Nadine Loick, Liz Dixon, Diego Abalos, Antonio Vallejo, Catherine Watson, Karen McGeough, Peter Matthews, and Laura Cardenas. ORAL PRESENTATION by N. Loick at EGU 2015
Year(s) Of Engagement Activity 2016
 
Description Presentation at the EGU Vienna, May 2015 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: L. M. Cardenas, D.R . Chadwick, T. H. Misselbrook, N. Donovan, R. Dunn, B. Griffith, R.J. Orr, K. A. Smith, R. M. Rees , M. Bell, C. J. Watson , K. L. McGeough, G. McNeill, J.R. Williams, J. M. Cloy , R. E. Thorman, M. S. Dhanoa. Heterogeneity of gaseous emissions in soils-spatial vs temporal variability. POSTER PRESENTATION at EGU 2015.
Year(s) Of Engagement Activity 2015
 
Description Presentation at the European Grassland Federation meeting 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper; L.M. Cardenas, R.M. Dunn, T.H. Misselbrook, P. Harris, F. Broccolo, R.J. Orr and M.R.F. Lee. The North Wyke Farm Platform: the impact of ploughing, cultivation and reseeding on emissions of CO2 and N2O at the EGF meeting: "The Multiple Roles of Grassland in the European Bioeconomy", Norway 4-8 September 2016
Year(s) Of Engagement Activity 2016
 
Description Presentation at the International Nitrogen Initiative meeting 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: García-Marco, Guardia, Cardenas, Dixon, Repullo and Vallejo. DMPSA application reduces N2O emissions from exogenous NH4+ and NO3- sources in a maize-irrigated crop, at the 7th International Nitrogen initiative conference, INI, Melbourne, Australia, 4-8 December 2016
Year(s) Of Engagement Activity 2016
 
Description Presentation at the International Symposium on Isotopomers, 2012 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Dominika Lewicka-Szczebak, Reinhard Well, Laura Cardenas, Peter Matthews, Tom Misselbrook, Roland Bol, Richard Whalley, Andy Gregory. : ISOTOPE FRACTIONATION FACTORS CONTROLLING ISOTOPOLOGUE SIGNATURES OF SOIL-EMITTED N2O PRODUCED BY DENITRIFICATION PROCESSES OF VARIOUS RATES. International Symposium on Isotopomers: ISI 2012, Washington, USA; 07/2012.
Year(s) Of Engagement Activity 2012
 
Description Presentation at the Italian society of agronomy (SICA), Italy, 2016 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Cardenas, L., Misselbrook, T., Chadwick, D. "Nitrous oxide emissions, from mechanistic understanding to the agriculture inventory in the UK" at the Annual Congress of the Italian society of agronomy (SICA), Perugia, Italy, 2016
Year(s) Of Engagement Activity 2016
 
Description Presentation at the JESIUM conference 2012 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Dominika Lewicka-Szczebak, Reinhard Well, Laura Cardenas, Peter Matthews, Roland Bol, Lena Rohe: ISOTOPE FRACTIONATION FACTORS ASSOCIATED WITH SOIL DENITRIFICATION. Joint European Stable Isotope Users Group Meeting: JESIUM 2012, Leipzig, Germany; 09/2012.
Year(s) Of Engagement Activity 2012
 
Description Presentation at the conference: Climate change, reactive nitrogen, food security and sustainable agriculture. Garmisch, Germany 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presented the talk: Denitrification from manure deposited by grazing livestock
Year(s) Of Engagement Activity 2019
 
Description Presentation in IFS conference 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact Presented papeer on Nitrification inhibitors
Year(s) Of Engagement Activity 2019
 
Description Presentation to the International Fertlizer Society 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation to the International Fertlizer Society
Year(s) Of Engagement Activity 2020
 
Description Research Partnership Building Workshop 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Other audiences
Results and Impact Workshop held from 8th-10th Febraury 2017 at the ILRI (International Livestock Research Institute) Campus in Nairobi, Kenya (BecA [Biosciences eastern and central Africa] is also based on the campus and it is also referred to as the BecA-ILRI Hub)
There were attendees from:
- ILRI
- The Mazingira Centre
- CIAT
- CIMMYT
- IITA
- CTLHG
- The Roslin Institute
- University of Cambridge
- Kenyatta University
- Bahir Dar University
Year(s) Of Engagement Activity 2017
 
Description SICA conference 2012 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Daniela Pezzolla, Roland Bol, Giovanni Gigliotti, Takuji Sawamoto, Aranzazu Louro López, Laura Cardenas, David Chadwick, Greenhouse gas (GHG) emissions from soils amended with digestate derived from anaerobic treatment of food waste. 2012- XXX Convegno Nazionale della Società Italiana di Chimica Agraria.
Year(s) Of Engagement Activity 2012
 
Description SfAM Early Career Scientists (PECS) 2015 Research Conference 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Postgraduate students
Results and Impact Presentation in the SfAM Early Career Scientists (PECS) 2015 Research Conference; Charlotte Marshall won best presentation
Year(s) Of Engagement Activity 2015
 
Description Soil Carbon Sequestration Conference in Iceland: 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: Arindam Datta, Nuala Fitton, Kairsty Topp, Joanna Cloy, Bob Rees, Laura Cardenas, John Williams, Kate Smith, Pete Smith. Estimation of Uncertainty in the DailyDAYCENT Model: Experiment with UK Cropland at the Soil Carbon Sequestration Conference in Iceland, 2013
Year(s) Of Engagement Activity 2013
 
Description Sustainable Intensification Conference, Harpenden, 2017 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation at the SI conference of the paper: - Loick, Dunn, Griffith, Cardenas. Using CO2 and N2O emissions as indicators of nutrient cycling and environmental impacts of different farm managements on the Farm Platform
Year(s) Of Engagement Activity 2017
 
Description Sustainable Intensification Conference, Harpenden, 2017 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: - Loick, Dixon, Repullo, Ciganda, Lopez-Aizpun, Matthews, Mueller, Cardenas. Using the Triple Labelling Technique to apportion N2O Emissions to Nitrification and Denitrification from different Nitrogen Sources at different Water-Filled-Pore-Spaces
Year(s) Of Engagement Activity 2017
 
Description Sustainable Intensification Conference, Harpenden, 2017 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Presentation of paper: - Cardenas, Takahashi, Harris, Mead, Lee. Redefining sustainability: novel metrics to evaluate farming systems based on the dynamic flow of nutrients
Year(s) Of Engagement Activity 2017
 
Description Teaching module in CIHEAM, Zaragoza, Spain, 14-16/3/2018 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact Laura Cardenas taught a module in the course: 'Mitigation of greenhouse gas emissions in agriculture: concepts, methods and simulation tools'
Year(s) Of Engagement Activity 2017
 
Description Undergraduate Students vists from University of Plymouth 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Undergraduate students
Results and Impact around 30 students from University of Plymouth visited North Wyke for the day to receive a talk about the work of the site and followed this up with a visit around the site
Year(s) Of Engagement Activity 2017,2018,2019
 
Description Visit of Reading university students on MSc by Research in Agriculture, Ecology and Environment 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Postgraduate students
Results and Impact Presented material on Rothamsted LTEs and new experimenst focussed on sustainable systems; included field walk to Broadbalk, Park Grass and Large Scale Rotation Experiment.
Year(s) Of Engagement Activity 2019