Prof. D. Chadwick - Staff Profile

Professor Dave Chadwick

Professor of Sustainable Land Use Systems

Environment Centre Wales (Room 208)


Tel: +44 (0)1248 383569


Responsibilities within SENRGY/BU

  • Member of SENRGY Management Committee
  • Member or Research Committee
  • Chair of Henfaes Research Centre Committee
  • Member of the College of Natural Sciences Ethical Research Committee
  • SENRGY Representative at University Senate.

Qualifications and Memberships

B.Sc. (Hons) Agriculture and Environmental Science. (1984-1987). University of Newcastle Upon Tyne.

Ph.D Effect of Climate on Decomposition Processes in Coniferous Forest Ecosystems. (1991-1995). University of Lancaster.


  • UK representative of the Livestock Research Group of the Global Research Alliance (GRA) on Agricultural Greenhouse Gas Emissions (
  • Co-chair of the Nutrient management Working Group of the UK-China Sustainable Agriculture Innovations Network (SAIN) (
  • Member of the British Grassland Society
  • Member of the Land Use Sub Group of the Climate Change Committee for Wales
  • Chinese Academy of Sciences President’s International Fellowship, The Institute of Subtropical Agriculture, Changsha, China. (2015-2016).
  • China Agriculture University (Beijing) - Agri-Platform International Expert Exchange Programme: Organic Resource Utilisation and GHG Mitigation (2016-2017).
  • Chinese Academy of Sciences President’s International Fellowship, Centre for Agricultural Resources Research (CARR), Shijiazhuang 050021, Hebei, China (2017-2018).
  • Management Board of the NERC STARS Soil Science Centre of Doctoral Training
  • Chairperson of The NPK Club (2017-2018)



Dave Chadwick is the Professor in Sustainable Land Use Systems in the School of Environment, Natural Resources and Geography (SENRGY) at Bangor University. His interests are in the management of nutrients in livestock manures, other organic resources and fertilisers to optimise nutrient utilisation whilst minimising impacts on water and air quality. This includes; quantifying and mitigating greenhouse gas emissions, reducing the risk of transfers of pollutants to watercourses, and understanding the secondary impacts of mitigating diffuse agricultural pollution. He led the recently completed Defra/Devolved Administrations funded consortium project to Improve the UK Agricultural Nitrous Oxide Inventory (InveN2Ory project), one of three projects delivering to the UK GHG Platform (

As well as publishing refereed scientific papers (see below), he also contributes to policy and practice, including:


Current Research Activities


  • Co-I of NERC Soil Security project: Securing long-term ecosystem function in lowland organic soils (SEFLOS) (Led by Bangor University, with CEH, Leicester University and G’s).
  • Co-I of BBSRC SARIC project: Real-time in situ sensing of soil nitrogen status to promote enhanced nitrogen use efficiency in agricultural systems (Led by Bangor University, with Southampton University, British Geological Survey, John Innes Centre, Yara, Syngenta, AIC, AHDB, British Grasslands Society, and Delta T).
  • Co-I of RDP Welsh Government project: Climate Smart Agriculture in Wales (CSA Wales).  (Led by IBERS, Aberystwyth University).
  • Co-I of the BBSRC (Newton Funded) UK-China Virtual Joint Centre on Agricultural Nitrogen (CINAg) (Led by Rothamsted Research, with CEH).
  • Principal Investigator of NERC project: Grazing behaviour, urine composition and soil properties are key drivers of nitrous oxide emissions from livestock urine in the uplands (Uplands-N2O). (With Rothamsted Research - North Wyke, and Leicester, Swansea and Texas A&M Universities).
  • Principal Investigator of the Defra / Devolved Administrations funded >£6.5M project: Improving the Agricultural Greenhouse Gas Emissions Inventory – Nitrous Oxide (InveN2Ory).
  • Work Package Leader, Diffuse Water Pollution and Climate Change Mitigation, of the Welsh Government funded project: Glastir Monitoring and Evaluation Programme. (Led by CEH Bangor).
  • Bangor University lead of Defra Sustainable Intensification Platform Project 1 – Farm-scale interventions at Henfaes Research Centre (Led by NIAB).
  • Bangor University lead of Defra Sustainable Intensification Platform Project 2 – Collaborative interventions in the Conwy Catchment (led by Exeter University).
  • Bangor University lead of the BBSRC funded Advanced Training Partnership (ATP) on Sustainable and Efficient Food Production. (Led by IBERS).
  • Bangor  University lead of the TSB funded project: Sustainable Forage Protein Efficient forage-based systems for ruminant livestock production in the UK. (Led by IBERS).

Current and Recent PhD students


  • Paulo Dumont (Chilean Scholarship, University of Reading, Dr. Steve Robinson, 2012 completion) Environmental impacts of wood chip corrals.
  • Alex Boon (NERC, University of Reading, Dr Steve Robinson, 2012 completion) Impacts of water management in the Somerset Levels on greenhouse gas production and emissions.
  • Tegan Darch (Defra, University of Lancaster, Prof. Phil Haygarth, 2012 completion). Biogeochemical processes to mitigate diffuse water pollution transport from agricultural soils.
  • Alison Carswell (Lawes Trust funded, University of Reading, Prof Penny Johnnes). Dissolved organic nitrogen losses and mitigation: Interactions with hydrological pathways and soil type.
  • Karina Marsden (Bangor University funded, Bangor University, with Prof. Davey Jones).  Spatial distribution of nitrogen transformations (and losses) in the urine patch environment.
  • Saufi Bastami (Funded by Malaysian Government, Bangor University, with Prof. Davey Jones). Reducing methane emissions from slurry stores by modifying the microbial environment.


  • Yuhong Li (Funded by Bangor-China Scholarship Council Scheme, Bangor University, with Prof Davey Jones). The fate of nitrogen and phosphorus in separated slurry and digestate.
  • Ma Yan (Funded by Bangor-China Scholarship Council Scheme, Bangor University, with Prof Davey Jones, Dr Laura Cardenas and Dr Tony Hooper). The use of biological nitrification inhibitors to affect N cycling and losses from agricultural soils.
  • Sian Rowlands (Funded by KESS II and Welsh Government, with Dr. David Styles and Prof John Healey). Wider implications of bracken control.

Recent Publications



Bai, Z., Ma, L., Ma, W., Velthof, G.L., Oenema, O., Liu, L., Chadwick, D. and Zhang, F (2017). Nitrogen, Phosphorus and Potassium Flows through the Manure Management Chain in China. Environmental Science and Technology DOI: 10.1021/acs.est.6b03348


Hodgson, C.J., Oliver D.M., Fish, R.D., Bulmer, N.M., Heathwaite, L.A., Winter, M., Chadwick, D.R. (2016). Seasonal persistence of faecal indicator organisms in soil following dairy slurry application to land by surface broadcasting and shallow injection. Journal of Environmental Management 183, 325-332.

Darch, T., Haygarth, P., Blackwell, M., Chadwick, D., Turner, B. (2016). Assessment of biologically-available organic phosphorus in tropical forest soils by organic acid extraction and phosphatase hydrolysis. Geoderma (in press).

Bhogal, A., Williams, J.R., Nicholson, F.A., Chadwick, D.R., Chambers, K.H., Chambers, B.J. (2016). Mineralization of organic nitrogen from farm manure applications. Soil Use and Management 32, 32-43.

Shaw, R., Lark, R.M., Williams, A.P., Chadwick, D.R., Jones, D.L. (2016). Characterising the within-field scale spatial variation of nitrogen in a grassland soil to inform the efficient design of in-situ nitrogen sensor networks for precision agriculture.  Agriculture, Ecosystems and Environment 230, 294-306.

Marsden, K.A., Jones, D.L., Chadwick, D.R. (2016). Disentangling the effect of sheep urine patch size and N loading rate on cumulative N2O emissions. Animal Production Science (in press).

Cuttle, S.P., Newell-Price, J.P., Harris, D., Chadwick, D.R., Shepherd, M.A., Anthony, S.G.A., Macleod, C.J.A., Haygarth, P.M. Haygarth, Chambers, B.J. (2015). A method-centric 'User Manual' for the mitigation of diffuse water pollution from agriculture. Soil Use and Management. doi: 10.1111/sum.12242.

Lamb, A., Green, R., Bateman, I., Broadmeadow, M., Bruce, T., Burney, J., Carey, P., Chadwick, D., Crane, E., Field, R., Goulding, K., Griffiths, H., Hastings, A., Kasoar, T., Kindred, D., Phalan, B., Pickett, J., Smith, P., Wall, E., zu Ermgassen, E.K.H.J., Balmford, A. (2016). Land sparing as a mechanism to offset greenhouse gas emissions from agriculture. Nature Climate Change DOI: 10.1038/NCLIMATE2910.

Styles, D., Mesa-Dominguez, E., Chadwick, D. (2016). Environmental balance of the of the UK biogas sector: an evaluation by consequential life cycle assessment. Science of the Total Environment 560-561, 241–253.  

McGeough, K.L., Watson, C.J., Müller, C., Laughlin, R.J., Chadwick, D.R. (2016). Evidence that the efficacy of the nitrification inhibitor dicyandiamide (DCD) is affected by soil properties in UK soils. Soil Biology and Biochemistry 94, 222–232.

Bell, M.J., Hinton, N.J., Cloy, J.M., Topp, C.F.E., Rees, R.M., Williams, J.R., Misselbrook, T.H., Chadwick, D.R. (2016). How do emission rates and emission factors for nitrous oxide and ammonia vary with manure type and time of application in a Scottish farmland? Geoderma 264, 81-93. DOI: 10.1016/j.geoderma.2015.10.007 .

Marsden, K.A., Jones, D.L., Chadwick, D.R. (2016). The urine patch diffusional area: an important N2O source? Soil Biology and Biochemistry 92, 161-170.

Bell, M.J., Cloy, J.M., Topp, K., Ball, B.C., Bagnall, A., Rees, R.M., Chadwick, D. R. (2016). Quantifying N2O emissions from intensive grassland production: the role of synthetic fertiliser type, application rate, timing, and nitrification inhibitors. The Journal of Agricultural Science 154, 812-827.


Marsden, K.A., Scowen, M., Hill, P.W., Jones, D.L., Chadwick, D.R. (2015). Plant acquisition and metabolism of the synthetic nitrification inhibitor dicyandiamide and naturally-occurring guanidine from agricultural soils. Plant and Soil 395, 201-214.

Darch, T., Carswell, A., Blackwell, M.S.A., Hawkins, J.M. B., Haygarth, P.M., Chadwick, D. (2015). Dissolved phosphorus retention in buffer strips; influence of slope and soil type. Journal of Environmental Quality 44, 1216-1224

Lloyd, C. E. M., Michaelides, K., Chadwick, D. R., Dungait, J. A. J., and Evershed, R. P. (2015). Runoff- and erosion-driven transport of cattle slurry: linking molecular tracers to hydrological processes, Biogeosciences Discuss., 12, 16603-16644, doi:10.5194/bgd-12-16603-2015.

Styles, D., Gibbons, J., Williams, A.P., Dauber, J., Stichnothe, H., Urban, B., Chadwick, D., Jones, D.L. (2015). Consequential life cycle assessment of biogas, biofuel and biomass energy options within an arable crop rotation. Global Change Biology Bioenergy 6, 1305-2320.

Quilliam, R.S., van Niekerk, M.A., Chadwick, D.R., Cross, P.,Hanley, N., Jones, D.L., Vinten, A.J.A., Willby, N.,Oliver, D.M. (2015) Can macrophyte harvesting from eutrophic water close the loop on nutrient loss from agricultural land? Journal of Environmental Management 152, 210–217.

Bell, M.J., Winning, N., Rees, R.M., Cloy, J.M., Topp, K., Cardenas, L., Donovan, N., Scott, T., Webster, C., Whitmore, A., Williams, J., Balshaw, H., Paine, F., Chadwick, D. (2015). Nitrous Oxide emissions from fertilised UK arable soils: Quantification and mitigation. Agriculture Ecosystems and the Environment 212, 134–147.

Chadwick, D., Jia, W., Tong, Y., Yu, G, Shen, Q, Chen, Q. (2015). Improving manure nutrient management towards sustainable agricultural intensification in China. Agriculture, Ecosystems and Environment 209, 34-46.

Jagadeesh B. Yeluripati, Agustin del Prado, Alberto Sanz-Cobeña, Robert Rees, Changsheng Li, Dave Chadwick, Emma Tilston, Cairistiona F.E. Topp, Laura Cardenas, Pete Ingraham, Sarah Gilhespy, Steven Anthony, Sylvia H. Vetter, Tom Misselbrook, William Salas, Pete Smith (2015). Global Research Alliance Modelling Platform (GRAMP): An open web platform for modelling greenhouse gas emissions from agro-ecosystems. Computers and Electronics in Agriculture 111, 112–120.

Jia, W., Yan, Z., Chadwick, D.R., Kang, L., Duan, Z., Bai, Z., Chen, Q. (2015). Integrating Soil Testing Phosphorus into Environmentally Based Manure Management in Peri-urban Regions: a Case Study in the Beijing Area. Agriculture, Ecosystems and Environment 209, 47-59.

 Lu, Y., Chadwick, D., Norse, D., Powlson, D., Shi, W. (2015). Sustainable intensification of China's agriculture: the key role of nutrient management and climate change mitigation and adaptation. Editorial. Agriculture, Ecosystems and Environment 209, 1-4.

Hinton, N.J., Cloy, J.M., Bell, M.J., Chadwick, D.R. Topp, C.F.E., Rees, R.E. (2015). Managing fertiliser nitrogen to reduce nitrous oxide emissions and emission intensities from a cultivated Cambisol in Scotland. Geoderma Regional 4, 55–65.

Bell, M., Rees, R., Cloy, J., Topp, K., Bagnall, A., Chadwick, D. (2015).Nitrous oxide emissions from cattle excreta applied to a Scottish grassland: effects of soil and climatic conditions and a nitrification inhibitor. Science of the Total Environment 508, 343-353.

Styles, D., Gibbons, J., Williams, A.P., Stichnothe, H., Chadwick, D.R. and Healey, J.R. (2015). Cattle feed or bioenergy? Consequential life cycle assessment of biogas feedstock options on dairy farms. Global Change Biology Bioenergy 7, 1034-1049.


Gilhespy, S.L., Anthony, S., Cardenas, L., Chadwick, D., del Prado, A., Li, C., Misselbrook, T., Rees, R.M., Salas, W., Sanz-Coben, A., Smith, P., Tilston, E.L., Topp, C.F.E., Vetter, S., Yeluripati, J.B. (2014). First 20 years of DNDC (DeNitrification DeComposition): Model Evolution. Ecological Modelling 292, 51–62.

Fitton, N., Datta, A., Hastings, A., Kuhnert, M., Topp, K., Cloy, J., Rees, B., Cardenas, L., Williams, J., Smith, K., Chadwick, D., Smith, P  (2014). The Challenge of Nitrogen Management at the Field Scale: Simulation, Sensitivity and Uncertainty Analysis of N2O Fluxes Across Nine Experimental Sites Using Dailydaycent. Special Issue of Environmental Research Letters on Focus on Nitrogen Management Challenges: From Global to Local Scales. Environmental Research Letters, 9, 095003

Powlson, D., Norse, D., Chadwick, D. Lu, Y., Zhang, W., Zhang, F., Huang, J. and Jia, X. (2014). Contribution of improved nitrogen fertilizer use to development of a low carbon economy in China. World Agriculture 4 (2), 10-18.

Boon, A., Robinson J.S., Chadwick, D.R., Cardenas, L.M. (2014).Effect of cattle urine addition on the surface emissions and subsurface concentrations of greenhouse gases in a UK peat grassland. Agriculture, Ecosystems and Environment 186, 23-32.

Garcia-Marco, S., Ravella, S.R., Chadwick, D., Vallejo, A., Gregory, A.S., Cardenas, L.M. (2014). Ranking factors affecting emissions of GHG from incubated agricultural soils. European Journal of Soil Science, 65, 573–583.

Crotty, F,V.,  Fychan, R., Theobald, V.J., Sanderson, S., Chadwick, D.R. and Marley, C.L. (2014). The Impact of Using Alternative Forages on the Nutrient Value within Slurry and Its Implications for Forage Productivity in Agricultural Systems. PLOS ONE 9 (5). May 15 2014.  DOI: 10.1371/journal.pone.0097516

Gooday, R.D., Anthony, S.G., Chadwick, D.R., Newell-Price, P., Harris, D., Duethmann, D., Fish, R., Collins, A.L. and Winter, M. (2014). Modelling the cost-effectiveness of mitigation methods for multiple pollutants at farm scale. Science of the Total Environment 468-469, 1198-1209.

Chadwick, D.R., Cardenas, L., Misselbrook, T.H., Smith, K.A., Rees, R.M., Watson, C.J., Mcgeough, K.L., Williams, J.R., Cloy, J.M., Thorman, R.E. and Dhanoa, M.S. (2014). Optimizing chamber methods for measuring nitrous oxide emissions from plot-based agricultural experiments European Journal of Soil Science, 65, 295–307. (doi: 10.1111/ejss.12117).


Fish, R., Winter, M., Oliver, D., Chadwick, D. R., Hodgson, C. J. and Heathwaite, L. (2014). Employing the citizens’ jury technique to elicit reasoned public judgments about environmental risk: insights from an inquiry into the governance of microbial water pollution. Journal of Environmental Planning and Management 57, 233-253.


Misselbrook, T.M., del Prado, A. and Chadwick, D.R. (2013). Opportunities for reducing environmental emissions from forage-based dairy farms. Agriculture and Food Science 22, 93-107.

Darch, T., Blackwell, M.S.A., Hawkins, J.M. B., Haygarth, P.M. and Chadwick, D. (2013). A meta-analysis of organic and inorganic phosphorus in organic fertilizers, soils and water; implications for water quality. Critical Reviews in Environmental Science and Technology 44, 2172-2202. doi 10.1080/10643389.2013.790752

Nicholson, F.A, Bhogal, A., Chadwick, D., Gill, E., Gooday, R.D., Lord, E., Misselbrook, T., Rollett, A.J., Sagoo, E.,  Smith, K.A., Thorman, R.E., Williams, J.R. and Chambers, B.J. (2013). An enhanced software tool to support better use of manure nutrients: MANNER-NPK. Soil Use and Management29, 473-484. doi: 10.1111/sum.12078

Boon, A., Robinson, J.S., Nightingale, P.D., Cardenas, L., Chadwick, D.R. and Verhoef, A. (2013). Determination of the gas diffusion coefficient of a peat grassland soil. European Journal of Soil Science 64, 681–687.

Louro, A., Sawamoto, T., Chadwick, D., Pezzolla, D., Bol, R.,  Báeza, D., and Cardenas, L. (2013). Effect of slurry and ammonium nitrate application on greenhouse gas fluxes of a grassland soil under atypical South West England weather conditions. Agriculture, Ecosystems and Environment 181, 1-11.

Sommer, S.G., Clough, T.J., Chadwick, D. and Petersen, S.O. (2013). Greenhouse Gas Emissions from Animal Manures and Technologies for their Reduction. In: Animal Manure and Recycling: Treatment and Management (Eds: S.G. Sommer, M.L. Christensen, T. Schmidt, L.S. Jensen). John Wiley and Sons Ltd. Chichester, UK. pp 177-194. 

Petersen, S.O., Blanchard, M. Chadwick, D., Del Prado, A., Edouard, N., Mosquera, J. and Sommer, S.G. (2013). Manure management for greenhouse gas mitigation. Animal 7:s2, 266-282.

Jones, D.L., Cross, P., Withers, P.J.A. DeLuca, T.H., Robinson, D.A., Quilliam, R.S., Harris, I.M., Chadwick, D.R. and Edwards-Jones, G. (2013). Nutrient stripping: the global disparity between food security and soil nutrient stocks. Journal of Applied Ecology 50, 851–862 (online doi: 10.1111/1365-2664.12089).

Zhang, W-F., Dou, Z., He, P., Ju, X-T, Powlson, D., Chadwick, D., Norse, D., Lu, Y-L., Zhang, Y., Wu, L., Chen, X-P, Cassman, K.G. and Zhang, F-S. (2013). New technologies reduce greenhouse gas emissions from nitrogenous fertilizer in China. Proceedings of the National Academy of Sciences 110, 8375–8380.

Rees, R.M., Baddeley, J.A., Bhogal, A., Ball, B.C., Chadwick, D.R., MacLeod, M., Lilly, A., Pappa, V.A., Thorman, R.E., Watson, C.A. and Williams, J. (2013). Nitrous oxide mitigation in UK agriculture. Soil Science and Plant Nutrition 59, 3-15.


Dumont P.A., Chadwick D. R., Misselbrook T. H., Robinson J. S., Smith K. A., Sagoo E., Camp V., Murray R., French P., Hill R. A. and Scott A. Effluent quality and ammonia emissions from out-wintering pads in England, Wales and Ireland. Agriculture Ecosystems & Environment 160, 82-90.

Pezzolla D., Bol R., Gigliotti G., Sawamoto T., Lopez A.L., Cardenas L. and Chadwick D. (2012). Greenhouse gas (GHG) emissions from soils amended with digestate derived from anaerobic treatment of food waste. Rapid Communications in Mass Spectrometry  26   (20), 2422-2430.

Nicholson F. A., Humphries S., Anthony S. G., Smith S.R., Chadwick D.R. and Chamber B.J. (2012). A software tool for estimating the capacity of agricultural land in England and Wales for recycling organic materials (ALOWANCE). Soil Use and Management 28 (3), 307 – 317.

Smith K.A., Dobbie K.E., Thorman R., Watson C.J., Chadwick D.R., Yamulki S. and Ball B.C. (2012). The effect of N fertilizer forms on nitrous oxide emissions from UK arable land and grassland. Nutrient Cycling in Agroecosystems 93, 127-149.

Jackson D.R., Chadwick D.R., Crookes M. and Smith K.A. (2012). Impact of hydrology and effluent quality on the management of woodchip pads for overwintering cattle: Part II: Effluent analysis and nutrient balance. Journal of Agricultural Science, Cambridge DOI: 10.1017/S0021859612000378 Published online in the Journal of Agricultural Science, Cambridge, 17th April 2012.

Dungait J.A.J., Whitmore A.P., Withers P., Cardenas L., Blackwell M., Wu L., Bol R., Chadwick D., Murray P., Macdonald A. and Goulding K. (2012). Advances in the understanding of nutrient dynamics and management in UK agriculture Science of the Total Environment 434, 39-50.

Skiba U., Jones S.K., Dragosits U., Drewer J., Fowler D., Rees R.M., Pappa V.A., Cardenas L., Chadwick D., Yamulki S. and Manning A.J. (2012). UK emissions of the greenhouse gas nitrous oxide. Philosophical Transactions of the Royal Society B, 367 no. 1593, 1175-1185.

Oliver D.M., Fish R.D., Hodgson C.J., Heathwaite A.L., Winter M. and Chadwick D.R.. (2012). Valuing local knowledge as a source of expert data: farmer engagement and the design of decision support systems. Environmental Modelling and Software 36, 76-85.

Moral Herrero R., Bustamante M., Misselbrook T. and Chadwick D. (2012). N and C transformations in stored cattle farmyard manure, including direct estimates of N2 emission. Resources, Conservation and Recycling 63, 35-42.

Pereira J, Fangueiro D, Misselbrook T.H., Chadwick D.R., Coutinho J. and Trindade H. (2012). Effects of temperature and dairy cattle excreta characteristics on potential ammonia and greenhouse gas emissions from housing: A laboratory study. Biosystems Engineering 112, 138-150.

Lloyd C.E.M., Michaelides K., Chadwick D.R., Dungait J.A.J. and Evershed R.P. (2012). Tracing the flow-driven vertical transport of livestock-derived organic matter through soil using biomarkers. Organic Geochemistry 43, 56-66.

Lu Y., Powlson D., Norse D., Chadwick D., Conway D., Ford-Lloyd B., Maxted N., Smith P. and Wheeler T. (2012). Sustaining China's Agriculture in a Changing Climate. A Multidisciplinary Action Through UK-China Cooperation. In: Climate Change Mitigation and Agriculture. Eds: Wollenber E ., Nihart A., TapioBistrom M.L., GriegGran M. pp.203-214. ISBN: 978-0-203-14451-0.

Cloy J.M., Rees R.M., Smith K.A., Goulding K., Smith P., Waterhouse A. and Chadwick D. (2012). Impacts of Agriculture upon Greenhouse Gas Budgets. In Environmental Impacts of Modern Agriculture. Eds: R.E. Hester and R.M. Harrison), Issues in Environmental Science and Technology, Royal Society of Chemistry, Cambridge, Issue 34.

Grilo J., Bol R., Dixon L., Chadwick D. and Fangueiro D. (2012). Long term release of carbon from grassland soil amended with different slurry particle size fractions: a laboratory study. Rapid Communications in Mass Spectrometry 25, 1514-1520.


Grilo J., Bol R., Dixon L., Chadwick D. and Fangueiro D. (2011). Long term release of carbon from grassland soil amended with different slurry particle size fractions: a laboratory study. Rapid Communications in Mass Spectrometry 25, 1514-1520.

Wu L., Shepherd A. and Chadwick D. (2011). Quantify response of crop systems to future climate change using SPACSYS model. Aspects of Applied Biology (Systems Approaches to Crop Improvement), 107, pp.57-62.

Winter, M., Oliver, D.M., Heathwaite, A.L., Fish, R.D., Chadwick, D.R. and Hodgson, C. (2011) Catchments, sub-catchments and private spaces: scale and process in managing microbial pollution from source to sea. Environmental Science & Policy 14, 315-326.

Del Prado A., Misselbrook T., Chadwick D., Hopkins A., Dewhurst R.J., Davison P., Butler A., Schroder J. and Scholefield D. (2011). SIMSDAIRY: A modelling framework to identify sustainable dairy farms in the UK. Framework description and test for organic systems and N fertiliser optimisation. Science of the Total Environment 409, 3993-4009.

Shepherd A., Wu L., Chadwick D. and Bol R. (2011). A Review of Quantitative Tools for Assessing the Diffuse Pollution Response to Farmer Adaptations and Mitigation Methods Under Climate Change. Advances in Agronomy 112, 1-54.  

Strachan, N. J. C., C. J. Hunter, C. D. R. Jones, R. S. Wilson, S. Ethelberg, P. Cross, A. P. Williams, O. Rotariu, and D. Chadwick. 2011 (in Press). The relationship between lay and technical views of Escherichia coli O157 risk. Philosophical Transactions of the Royal Society B 366, 1999-2009.

Chadwick D., Sommer S., Thorman R., Fangueiro D., Cardenas L., Amon B. and Misselbrook T. (2011). Manure management: implications for greenhouse gas emissions. Animal Science and Feed Technology 166-167, 514-531.    

Misselbrook T.H., Cape J.N., Cardenas L.M., Chadwick D.R., Dragosits U., Hobbs P.J., Nemitz E., Reis S., Skiba U. and Sutton M.A. (2011). Key unknowns in estimating atmospheric emissions from UK land management. Atmospheric Environment 45, 1067-1074.

Pereira J., Fangueiro D., Misselbrook T.H., Chadwick D.R., Coutinho J. and Trindade H. (2012). Ammonia and Greenhouse Gas Emissions from Slatted and Solid Floors in Dairy Cattle Houses: A Scale Model Study. Biosystems Engineering 109, 148-157.


Pereira J., Misselbrook T.H., Chadwick D.R., Coutinho J. and Trindade H. (2010). Ammonia emissions from naturally ventilated dairy cattle buildings and outdoor concrete yards in Portugal. Atmospheric Environment 44, 3413-3421.

Pereira J., Fangueiro D., Chadwick D.R., Misselbrook T.H., Coutinho J. and Trindade H. (2010). Effect of cattle slurry pre-treatment by separation and addition of nitrification inhibitors on gaseous emissions and N dynamics: a laboratory study. Chemosphere 79, 620-627.

Fangueiro D., Chadwick D., Dixon L., Grilo J., Walter N. and  Bol R. (2010). Short term N2O, CH4 and CO2 production from soil sampled at different depths and amended with a fine sized slurry fraction. Chemosphere 81, 100-108.

Pilgrim E.S., Macleod C.J.A., Blackwell M.S.A., Bol R., Hogan D.V., Chadwick D.R., Cardenas L., Misselbrook T.H., Haygarth P.M., Brazier R.E., Hobbs P., Hodgson C., Jarvis S., Dungait J.,  Murray P.J. and Firbank L.G. (2010) Interactions among agricultural production and other ecosystem services delivered from European temperate grassland systems. Advances in Agronomy 109, 117-154.     

Bridge J.W., Oliver D.M., Chadwick D., Godfray C., Heathwaite A.L., Kay D., Maheswaran R., McGonigle D.F., Nichols G., Pickup R., Porter J., Wastling J., and Banwart S.A. (2010). Engaging with the water sector for public health benefits: waterborne pathogens and diseases in developed countries. Bulletin World Health Organisation 88, 873-875.

Knowles T.D.J., Chadwick D.R., Bol R. and Evershed R.P. (2010). Tracing the rate and extent of N and C flow from C-13,N-15-glycine and glutamate into individual de novo synthesised soil amino acids. Organic Geochemistry 41, 1259-1268. 

 Dungait, J.A.J., Bol, R., Lopez-Capel, Bull, I.D. Chadwick, D., Amelung, W. Granger, S., Manning, D.C. and  Evershed. R.P. (2010). Applications of stable isotope ratio mass spectrometry in cattle dung C cycling studies. Rapid Communications in Mass Spectrometry 24, 495-500.

Matthews R.A., Chadwick D.R., Retter A.L., Blackwell M.S.A., and Yamulki S.. (2010). Nitrous oxide emissions from small-scale farmland features of livestock farming systems. Agriculture, Ecosystems and Environment 136, 192-198.

Cardenas, L.M., R.Thorman, R., Ashlee, N., Butler, M., Chadwick, D.R., Chambers, B., Cuttle, S., Donovan, N., Kingston, H., Lane, S. and Scholefield, D. (2010). Quantifying annual N2O emission fluxes from grazed grassland under a range of inorganic fertiliser nitrogen inputs. Agriculture, Ecosystems and Environment 136, 218-226.

Del Prado A., Chadwick D.R., Cardenas L., Misselbrook T., Scholefield D and Merino P. (2010). Exploring systems responses to mitigation of GHG in UK dairy farms. Agriculture, Ecosystems and Environment 136, 318-332.

Oliver D.M., Page T., Hodgson C.J., Heathwaite A.L., Chadwick D.R., Fish R.D. and Winter M. (2010). Development and testing of a risk indexing framework to determine field-scale critical source areas of faecal bacteria on grassland. Environmental Modelling & Software 25, 503-512.

Kay D., Anthony S., Crowther J., Chambers B.J., Nicholson F.A., Chadwick D., Stapleton C.M. and Wyer M.D. (2010). Microbial water pollution: A screening tool for initial catchment-scale assessment and source apportionment. Science of the Total Environment 408, 5649-5656.


Gilhespy S. L., Webb J., Chadwick D. R., Misselbrook T. H., Kay R., Camp V., Retter A. L., and Bason A. (2009). Will additional straw bedding in buildings housing cattle and pigs reduce ammonia emissions? Biosystems Engineering 102, 180-189.

Oliver D. M., Heathwaite A. L., Fish R. D., Chadwick D. R., Hodgson C. J., Winter M., and Butler A. (2009). Scale appropriate modelling of diffuse microbial pollution from agriculture. Progress in Physical Geography 3, 358-377.

Hodgson C. J., Bulmer N., Chadwick D. R., Oliver D. M., Heathwaite A. L., Fish R. D. and Winter M. (2009). Establishing relative release kinetics of faecal indicator organisms from different faecal matrices. Letters in Applied Microbiology 49, 124-130.

Fish R. D., Winter M., Oliver D. M., Chadwick D. R., Selfa T., Heathwaite A. L. and Hodgson C. J. (2009). Unruly pathogens: eliciting values for environmental risk in the context of heterogeneous expert knowledge. Environmental Science and Policy, 12, 281-296.

Oliver D.M., Fish R.D., Hodgson C.J., Heathwaite A.L., Chadwick D.R. and Winter M. (2009). A cross-disciplinary toolkit to assess the risk of faecal indicator loss from grassland farm systems to surface waters. Agriculture, Ecosystems and Environment 129, 401-412.


Fangueiro D., Pereira J.L., Chadwick D., Coutinho J., Moreira N. and Trindade, H. (2008). Laboratory assessment of the effect of cattle slurry pre-treatment on organic N degradation after soil application and N2O and N2 emissions. Nutrient Cycling in Agroecosystems 80, 107-120.

Fangueiro D., Senbayran M., Trindade H. and Chadwick D. (2008). Cattle slurry treatment by screw press separation and chemically enhanced settling: effect on greenhouse gas emissions after land spreading and grass yield. Bioresource Technology 99, 7132-7142.

Fangueiro D., Coutinho J., Chadwick D., Moreira N., and Trindade H. (2008). Effect of Cattle Slurry Separation on Greenhouse Gas and Ammonia Emissions during Storage. Journal of Environmental Quality, 37(6), 2322-2331.

Fangueiro D., Chadwick D. and Bol R. (2008). Assessment of the potential N mineralisation of different particle size fractions in two dairy cattle slurries. Journal of Plant Nutrition and Soil Science 171, 313-315.

Chadwick D.R., Fish R.D., Oliver D.M., Heathwaite A.L., Hodgson C.J. and Winter M. (2008). Management of livestock and their manure to reduce the risk of microbial transfers to water – the case for an interdisciplinary approach. Trends in Food Science and Technology 19, 240-247.


Murray P.J., Chadwick D.R., Newbold C.J. and Lockyer D.R. (2007). Measurement of Methane from Grazing Animals – The Tunnel Method. In: Eds. H Makkar and P Vercoe) Measuring Methane Production from Ruminants. Pp.105-109. Springer, The Netherlands.

Chadwick D., Donaldson G, Laws J. and Zonno V. Sludge (2007). Valuable resource or disposal problem. In:   Manual on effluent treatment in aquaculture: science and practice. pp.131-142.

Cardenas L., Chadwick D., Scholefield D., Fychan R., Marley C.L., Jones R., Bol R., Well R. and Vallejo A. (2007) The effect of diet manipulation on nitrous oxide and methane emissions from manure application to incubated grassland soils. Atmospheric Environment 41, 7096-7107.

Fangueiro D., Chadwick D., Dixon L. and Bol R. (2007) Quantification of priming and CO2 emission sources following the application of different slurry particle size fractions to a grassland soil. Soil Biology and Biochemistry 10, 2608-2620.

Sagoo E., Williams J.R., Chambers B.J., Boyles L.O., Matthews R. and Chadwick D.R. (2007) Integrated management practices to minimise losses and maximise the crop nitrogen value of broiler litter. Biosystems Engineering 97, 512-519.

Thorman R.E., Chadwick D.R., Harrison R., Boyles L.O. and Matthews R. (2007) The effect on N2O emissions of storage conditions and rapid incorporation of pig and cattle farmyard manure into tillage land. Biosystems Engineering 97, 501-511.

Salazar F., Dumont J., Chadwick D., Saldaña R. and Santana M. (2007) Characterization of Dairy Slurry in Southern Chile farms. Agricultura Tecnica (Chile), 67, 155-162.

Oliver D., Heathwaite A.L., Hodgson C.J. and Chadwick D.R. (2007) Mitigation and Current Management Attempts to Limit Pathogen Survival and Movement within Farmed Grassland. Advances in Agronomy 93, 95-152.


Gilhespy S., Webb J., Retter A. and Chadwick D. (2006) Dependence of ammonia emissions from housing on the time cattle spent inside. Journal of Environmental Quality 35, 1659-1667.

Monteny Gert-Jan, Bannink A. ,Chadwick D. R. (2006) Greenhouse gas abatement strategies for animal husbandry. Agriculture, Ecosystems & Environment 112, 163-170.

Sommer S.G., Zhang G.Q., Bannink A., Chadwick D., Misselbrook T., Harrison R., Hitchings N.J., Menzi H., Monteny G.J., Ni J.Q., Oenema O. and Webb J. (2006) Algorithms determining ammonia emission from buildings housing cattle and pigs and from manure stores. Advances in Agronomy 89, 264-335.

Thorman R.E., Chadwick D.R., Boyles L.O., Matthews R., Sagoo E. and Harrison R. (2006) Nitrous oxide emissions during storage of broiler litter and following application to arable land. International Congress Series 1293, 355-358.


Chadwick D. 2005. Emissions of ammonia, nitrous oxide and methane from cattle manure heaps: effect of compaction and covering. Atmospheric Environment 39, 787-799.

Hatch D., Trinidade H., Cardenas L., Carneiro J., Hawkins J., Scholefield D. and Chadwick D. (2005) Laboratory study of the effects of two nitrification inhibitors on greenhouse gas emissions from a slurry-treated arable soil: impact of diurnal temperature cycle. Biology and Fertility of Soils 41,225-232.

Brookman S.K.E., Chadwick D.R. and Retter A.R. (2005) Lysimeter experiments to determine the ability of soil to reduce concentrations of BOD, available P and inorganic N in dirty water. Environmental Technology 26, 1189-1204.

Salazar F.J., Chadwick D., Pain B.F., Hatch D. and Owen E.  (2005). Nitrogen budgets for three cropping systems fertilised with cattle manure. Bioresource Technology  96, 235-245.