I was raised on an upland livestock farm and am still a practising farmer, which gives me a first-hand insight into agricultural and environmental issues, alongside my academic perspective.

I have a broad range of research interests at the interface of agriculture and the environment. These primarily focus on livestock systems, including the challenges and opportunities to reaching Net Zero greenhouse gas emissions, management of organic resources (slurries, manures, etc.), pathogens, antibiotic resistance, and soils. Having worked on several large interdisciplinary projects, I have also developed a considerable interest in the ongoing discussions around land use (sustainable intensification, delivery of public goods, etc.). 

I have also been part of large projects researching the potential for energy savings and generation within the water sector (https://www.dwr-uisce.eu/) and small-scale hydropower plants (http://hydro-bpt.bangor.ac.uk/).

I sit on several external committees, including:

• Chair of the Agriculture Industry Climate Change Forum
• Board Member of Farming Connect
• Member of the Sustainable Innovation and Research Working Group for Hybu Cig Cymru
• Board Member of Menter a Busnes
• Chair of the Carneddau Landscape Partnership
• Bangor University representative on the Global Farm Platform group
• Member of the NFU’s Net Zero Scientific Advisory Panel

I was awarded the 2023 External Award from the Farmers' Union of Wales for “services to agriculture”.

I frequently engage with industry and the media on issues related to agriculture and the environment, through the medium of Welsh and English.

Location: F5a Thoday, School of Environmental & Natural Sciences, Bangor University

E-mail address: prysor.williams@bangor.ac.uk

Phone: +44 (0)1248 382 637

X/Twitter: @PrysorWilliams

• Postgraduate Certificate in Higher Education (PGCertHE)
• BSc Environmental Science (2003)
• PhD: Environmental Microbiology (2006) (Survival of E. coli O157 in agricultural environments and the implications for human health)

I am the Course Director for the BSc and MEnvSci degrees in Environmental Science.

I am a member of the Coleg Cymraeg Cenedlaethol’s Academic Board, and Chair of its Panel for Geography, Agriculture and the Environment. 

I sit on Bangor University's Curriculum Quality Assurance Delivery Group.

I have acted as an External Examiner for undergraduate degrees as Aberystwyth University and The University of Wales Trinity St. David. 

Module organiser:

• DXX-1002 (Level 4) Environmental Management & Conservation
• DXX-3402 (Level 6) Waste Management & Utilisation
• DXX-4101 (Level 7) Master of Env. Science Dissertation

Module contributor:

• DXX-1000 (Level 4) Academic Tutorials
• ONC-1001 (Level 4) Dadansoddi Data Amgylcheddol
• DXX/C-1006 (Level 4) Fieldwork / Gwaith Maes: Eryri
• DXX-2002 (Level 5) Water, Air & Soil Pollution
• DXX-2012 (Level 5) Field Course: Environmental Conflicts
• DXX-2000 (Level 5) GIS & Research Methods
• DXX/C-3701 (Level 6) Honours Project / Prosiect Ymchwil
• DXX-3702 (Level 6) Management Plan
• DXX-4102 (Level 7) Professional Placement
• DXX-4999 (Level 7) MSc Dissertation
• DXX-4042 (Level 7) Agriculture & the Environment

I am interested in many areas at the interface between agriculture and the environment. These include, but are not limited to:

• grassland production systems
• achieving Net Zero in livestock systems
• soil and nutrient management
• sustainable intensification of livestock systems
• land use and the delivery of ecosystem services
• antibiotic resistance

Please contact me by all means to discuss any ideas for PhD projects. 

2025

• PublishedMarginal abatement cost curves of climate-smart agricultural practices to mitigate greenhouse gas emissions from smallholder dairy farms in Kenya
  Caulfield, M., Graham, M., Gibbons, J., McNicol, L., Williams, P., Chadwick, D., Gakige, J., Wilkes, A., Kimoro, B. & Arndt, C., 10 Apr 2025, In: Journal of Cleaner Production. 501, 145281.
  Research output: Contribution to journal › Article › peer-review

2024

• PublishedNet Zero requires ambitious greenhouse gas emission reductions on beef and sheep farms coordinated with afforestation and other land use change measures
  McNicol, L., Williams, N., Chadwick, D., Styles, D., Rees, R. M., Ramsey, R. & Williams, P., 1 Mar 2024, In: Agricultural Systems. 215, 103852, 103852.
  Research output: Contribution to journal › Article › peer-review
• PublishedResponding to the UN sustainability goals in transdisciplinary partnership through network action learning
  Dreyer-Gibney, K., Coughlan, P., Coghlan, D., Wu, S.-H., Bello-Dambatta, A., Dallison, R., McNabola, A., Novara, D., Rafique, A., Schestak, I., Spriet, J., Walker, N. & Williams, P., 20 Mar 2024, In: Environment, Development and Sustainability.
  Research output: Contribution to journal › Article › peer-review
• PublishedThe nutritional value of meat should be considered when comparing the carbon footprint of lambs produced on different finishing diets
  McNicol, L., Perkins, L., Gibbons, J., Scollan, N. D., Nugent, A., Thomas, E., Swancott, E., McRoberts, C., White, A., Chambers, S., Farmer, L. & Williams, P., 20 Feb 2024, In: Frontiers in Sustainable Food Systems. 8, 1321288.
  Research output: Contribution to journal › Article › peer-review

2023

• PublishedEvaluating the accuracy and usefulness of commercially-available proximal soil mapping services for grassland nutrient management planning and soil health monitoring
  Rhymes, J., Chadwick, D. R., Williams, A. P., Harris, I. M., Lark, R. M. & Jones, D. L., Jun 2023, In: Precision Agriculture. 24, 3, p. 898-920 23 p.
  Research output: Contribution to journal › Article › peer-review
• PublishedHeat recovery and water reuse in micro-distilleries improves eco-efficiency of alcohol production
  Schestak, I., Spriet, J., Black, K., Styles, D., Farago, M., Rygaard, M. & Williams, P., 1 Jan 2023, In: Journal of Environmental Management. 325, part A, 11 p., 116468.
  Research output: Contribution to journal › Article › peer-review
• PublishedResearching Green Process Innovation Across Borders and Boundaries Through Collaborative Inquiry
  Coughlan, P., Bellini, R., Bello-Dambatta, A., Dallison, R., Dreyer-Gibney, K., Gallagher, J., Harris, I., McNabola, A., Mitrovic, D., Murali, M., Novara, D., Patil, S., Rigby, A., Ritsos, P. D., Schestak, I., Singh, A., Walker, N. & Williams, P., Dec 2023, In: The Journal of Applied Behavioral Science. 59, 4, p. 556-584 29 p.
  Research output: Contribution to journal › Article › peer-review
• PublishedWater sector resilience in the United Kingdom and Ireland: The COVID-19 challenge
  Walker, N., Styles, D. & Williams, P., 1 Jun 2023, In: Utilities Policy. 82, 101550.
  Research output: Contribution to journal › Article › peer-review

2022

• PublishedA framework for integrating ecosystem services as endpoint impacts in life cycle assessment
  Hardaker, A., Styles, D., Williams, P., Chadwick, D. & Dandy, N., 10 Oct 2022, In: Journal of Cleaner Production. 370, 133450.
  Research output: Contribution to journal › Article › peer-review
• PublishedCircular use of feed by-products from alcohol production mitigates water scarcity
  Schestak, I., Styles, D., Black, K. & Williams, P., 1 Mar 2022, In: Sustainable Production and Consumption. 30, p. 158-170
  Research output: Contribution to journal › Article › peer-review
• PublishedClimate mitigation efficacy of anaerobic digestion in a decarbonising economy
  Styles, D., Yesufu, J., Bowman, M., Williams, P., Duffy, C. & Luyckx, K., 1 Mar 2022, In: Journal of Cleaner Production. 338, 13 p., 130441.
  Research output: Contribution to journal › Article › peer-review
• PublishedCross-sector sustainability benchmarking of major utilities in the United Kingdom
  Walker, N., Styles, D., Coughlan, P. & Williams, P., 1 Oct 2022, In: Utilities Policy. 78, 101417.
  Research output: Contribution to journal › Article › peer-review
• PublishedEnergy efficiency through household water use efficiency: a survey on public perception of household water and water-related energy use in Ireland
  Bello-Dambatta, A., Bellini, R. & Williams, P., May 2022.
  Research output: Contribution to conference › Other
• PublishedEnergy efficiency through water use efficiency in leisure centres
  Bello-Dambatta, A. & Williams, P., May 2022.
  Research output: Contribution to conference › Paper › peer-review
• PublishedMicroclimate drives shelter-seeking behaviour in lambing ewes
  Atkin-Willoughby, J., Hollick, S., Pritchard, C., Williams, P., Davies, P., Jones, D. & Smith, A., 12 Dec 2022, In: Forests. 13, 12, p. 2133
  Research output: Contribution to journal › Article › peer-review
• PublishedModelling the impact of future climate change on streamflow and water quality in Wales, UK
  Dallison, R., Williams, P., Harris, I. & Patil, S., 25 Apr 2022, In: Hydrological Sciences Journal. 67, 6, p. 939-962 24 p.
  Research output: Contribution to journal › Article › peer-review
• PublishedStrategies to reach zero carbon beef and sheep production on Welsh farms
  McNicol, L., Williams, P., Styles, D., Rees, R. M. & Chadwick, D., 1 Apr 2022, Animal - science proceedings. 1 ed. Vol. 13. p. 8-9
  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2021

• PublishedAligning efficiency benchmarking with sustainable outcomes in the United Kingdom water sector
  Walker, N. L., Styles, D., Gallagher, J. & Williams, A. P., 1 Jun 2021, In: Journal of Environmental Management. 287, 112317.
  Research output: Contribution to journal › Article › peer-review
• PublishedBarriers and opportunities facing the UK Peatland Code: a case-study of blended green finance
  Moxey, A., Smith, M.-A., Taylor, E. & Williams, P., 1 Sept 2021, In: Land Use Policy. 108, 105594.
  Research output: Contribution to journal › Article › peer-review
• PublishedElevated serum antibody responses to synthetic mycobacterial lipid antigens among UK farmers: an indication of exposure to environmental mycobacteria?
  Jones, A., Davies, C., Al-Dulayymi, J., Gwenin, C., Gibbons, J., Williams, P. & Baird, M., 1 Feb 2021, In: RSC Medicinal Chemistry. 12, 2, p. 213-221 9 p.
  Research output: Contribution to journal › Article › peer-review
• PublishedIdentifying barriers to routine soil testing within beef and sheep farming systems
  Rhymes, J., Wynne-Jones, S., Williams, P., Harris, I., Rose, D., Chadwick, D. & Jones, D. L., 15 Dec 2021, In: Geoderma. 404, 115298.
  Research output: Contribution to journal › Article › peer-review
• PublishedImpacts of climate change on future water availability for hydropower and public water supply in Wales, UK
  Dallison, R., Patil, S. & Williams, P., 1 Aug 2021, In: Journal of Hydrology: Regional Studies. 36, 100866.
  Research output: Contribution to journal › Article › peer-review
• PublishedIncreasing the productivity of an upland pasture with the least environmental impacts
  Williams, N., Gibbons, J., Chadwick, D., Marsden, K. & Williams, P., 1 Aug 2021, In: Agriculture, Ecosystems and Environment. 315, 107449.
  Research output: Contribution to journal › Article › peer-review
• PublishedIntroducing a Calculator for the Environmental and Financial Potential of Drain Water Heat Recovery in Commercial Kitchens.
  Schestak, I., Spriet, J., Styles, D. & Williams, P., 7 Dec 2021, In: Water. 13, 24, 14 p., 3486.
  Research output: Contribution to journal › Article › peer-review
• PublishedKey traits for ruminant livestock across diverse production systems in the context of climate change: perspectives from a global platform of research farms
  Rivero, M. J., Lopez-Villalobos, N., Evans, A., Berndt, A., Cartmill, A., Neal, A. L., McLaren, A., Farruggia, A., Mignolet, C., Chadwick, D., Styles, D., McCracken, D., Busch, D., Martin, G. B., Flemming, H., Sheridan, H., Gibbons, J., Merbold, L., Eisler, M., Lambe, N., Rovira, P., Harris, P., Murphy, P., Vercoe, P. E., Williams, P., Machado, R., Takahashi, T., Puech, T., Boland, T., Ayala, W. & Lee, M. R. F., 2021, In: Reproduction, Fertility and Development. 33, 2, p. 1-19
  Research output: Contribution to journal › Article › peer-review
• PublishedPitfalls in international benchmarking of energy intensity across wastewater treatment utilities
  Walker, N., Williams, P. & Styles, D., 15 Dec 2021, In: Journal of Environmental Management. 300, 10 p., 113613.
  Research output: Contribution to journal › Article › peer-review
• PublishedReducing household greenhouse gas emissions from space and water heating through low-carbon technology: identifying cost-effective approaches
  Rafique, A. & Williams, P., 1 Oct 2021, In: Energy and Buildings. 248, 11162.
  Research output: Contribution to journal › Article › peer-review
• PublishedSpatial behaviour of sheep during the neonatal period: Preliminary study on the influence of shelter
  Pritchard, C., Williams, P., Davies, P., Jones, D. & Smith, A., 1 Jul 2021, In: Animal. 15, 7, 100252.
  Research output: Contribution to journal › Article › peer-review
• PublishedTaking the steps toward sustainable livestock: our multidisciplinary global farm platform journey
  Rivero, M. J., Evans, A., Berndt, A., Cartmill, A., Dowsey, A., Farruggia, A., Mignolet, C., Enriquez-Hidalgo, D., Chadwick, D., McCracken, D., Busch, D., Pereyra, F., Martin, G. B., Sanford, G. R., Sheridan, H., Wright, I., Brunet, L., Eisler, M., Lopez-Villalobos, N., Rovira, P., Harris, P., Murphy, P., Williams, P., Jackson, R. D., Machado, R., Suraj, P. T., Puech, T., Boland, T., Ayala, W. & Lee, M. R. F., Oct 2021, In: Animal Frontiers. 11, 5, p. 52-58 7 p.
  Research output: Contribution to journal › Article › peer-review

2020

• PublishedCollaboration for Sustainable Intensification: The Underpinning Role of Social Sustainability
  Wynne-Jones, S., Hyland, J., Williams, P. & Chadwick, D., Jan 2020, In: Sociologia Ruralis. 60, 1, p. 58-82 25 p.
  Research output: Contribution to journal › Article › peer-review
• PublishedEmissions down the drain: Balancing life cycle energy and greenhouse gas savings with resource use for heat recovery from kitchen drains
  Schestak, I., Spriet, J., Styles, D. & Williams, P., 1 Oct 2020, In: Journal of Environmental Management. 271, 110988.
  Research output: Contribution to journal › Article › peer-review
• PublishedImpact of Sediment Concentration on the Survival of Wastewater-Derived blaCTX-M-15-Producing E. coli, and the Implications for Dispersal into Estuarine Waters
  Bashawri, Y. M. A., Robins, P., Jones, D. L., McDonald, J., Cooper, D. & Williams, P., 19 Oct 2020, In: International Journal of Environmental Research and Public Health. 17, 20, 15 p., 7608.
  Research output: Contribution to journal › Article › peer-review
• UnpublishedImproving water-related energy efficiency in wet leisure centres in Denbighshire County Council
  Bello-Dambatta, A. & Williams, P., Apr 2020, (Unpublished) 30 p.
  Research output: Book/Report › Book
• PublishedInfluence of historical climate patterns on streamflow and water demand in Wales, UK
  Dallison, R., Patil, S. & Williams, P., 12 Jun 2020, In: Water. 12, 6, 1684.
  Research output: Contribution to journal › Article › peer-review
• PublishedKey performance indicators to explain energy & economic efficiency across water utilities, and identifying suitable proxies
  Walker, N., Williams, P. & Styles, D., 1 Sept 2020, In: Journal of Environmental Management. 269, 110810.
  Research output: Contribution to journal › Article › peer-review
• PublishedResponding to the UN Sustainability Goals through network action learning
  Dreyer-Gibney, K., Coughlan, P., Coghlan, D., Wu, S.-H., Bello-Dambatta, A. (Contributor), Dallison, R. (Contributor), McNabola, A., Novara, D., Rafique, A. (Contributor), Schestak, I. (Contributor), Spriet, J., Walker, N. (Contributor) & Williams, P., 6 Dec 2020, European Academy of Management.
  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2019

• PublishedA life cycle assessment of the construction phase of eleven micro-hydropower installations in the UK
  Ueda, T., Roberts, E. S., Styles, D., Williams, A., Ramos, H. M. & Gallagher, J., 1 May 2019, In: Journal of Cleaner Production. 218, p. 1-9
  Research output: Contribution to journal › Article › peer-review
• PublishedEconomic and environmental efficiency of UK and Ireland water companies: Influence of exogenous factors and rurality
  Walker, N., Norton, A., Harris, I., Williams, A. & Styles, D., 1 Jul 2019, In: Journal of Environmental Management. 241, p. 363-373
  Research output: Contribution to journal › Article › peer-review
• PublishedIntegrated Analysis. Report 10a:Integrated Analysis. Report to Welsh Government (Contract C210/2016/2017).
  Emmett, B. A., Alison, J., Braban, C., Dickie, I., Gunn, I. D. M., Healey, J., Jenkins, T., Jones, L., Keenleyside, C. B., Lewis-Reddy, E., Martineau, A. H., Newell-Price, J. P., Old, G. H., Pagella, T., Siriwardena, G. M., Williams, A. P. & Williams, J. R., 8 Jul 2019, Centre for Ecology & Hydrology . 27 p. ( Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP): Sustainable Farming Scheme Evidence Review)
  Research output: Book/Report › Commissioned report
• PublishedReport 10b: Considerations for the new scheme. Report to Welsh Government (Contract C210/2016/2017).
  Emmett, B. A., Alison, J., Braban, C., Dickie, I., Gunn, I. D. M., Healey, J., Jenkins, T., Jones, L., Keenleyside, C. B., Martineau, A. H., Newell-Price, P., Old, G. H., Pagella, T., Siriwardena, G. M., Williams, A. G., Williams, P. & Williams, J. R., 10 Jul 2019, Centre for Ecology & Hydrology . 23 p. (Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP): Sustainable Farming Scheme Evidence Review. )
  Research output: Book/Report › Commissioned report
• UnpublishedWater-Energy Nexus: Efficiencies and Sustainability in Demand Management
  Bello-Dambatta, A. & Williams, P., 8 Sept 2019, (Unpublished) Global Network for Researchers.
  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2018

• PublishedAnalysing the historic supply-demand dynamics of public water supply across catchments in Wales, UK
  Dallison, R., Patil, S. & Williams, P., 9 Apr 2018.
  Research output: Contribution to conference › Poster › peer-review
• PublishedCan In-Situ Soil Nitrate Measurements Improve Nitrogen-Use Efficiency in Agricultural Systems?
  Jones, D. L., Chadwick, D. R., Rengaraj, S., Wu, D., Williams, A. P., Hill, P. W., Miller, A. J., Lark, R. M., Rosolem, C. A., Damin, V. & Shaw, R., 1 Dec 2018, Proceedings 1466-1314. International Fertiliser Society, Vol. 825. p. 1-32 32 p. 825
  Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review
• PublishedDelineating and mapping riparian areas for ecosystem service assessment
  de Sosa, L. L., Glanville, H. C., Marshall, M. R., Abood, S. A., Williams, A. P. & Jones, D. L., Mar 2018, In: ECOHYDROLOGY. 11, 2, e1928.
  Research output: Contribution to journal › Article › peer-review
• PublishedInnovating for low‐carbon energy through hydropower: Enabling a conservation charity's transition to a low‐carbon community
  Gallagher, J., Coughlan, P., Williams, A. & McNabola, A., Dec 2018, In: Creativity and innovation management. 27, 4, p. 375-386
  Research output: Contribution to journal › Article › peer-review
• PublishedQuantifying the contribution of riparian soils to the provision of ecosystem services
  de Sosa, L. L., Glanville, H. C., Marshall, M. R., Williams, A. P. & Jones, D. L., 15 May 2018, In: Science of the Total Environment. 624, p. 807-819
  Research output: Contribution to journal › Article › peer-review
• PublishedRepeated application of anaerobic digestate, undigested cattle slurry and inorganic fertilizer N: Impacts on pasture yield and quality
  Walsh, J. J., Jones, D. L., Chadwick, D. & Williams, A., 1 Sept 2018, In: Grass and Forage Science. 73, p. 758-763
  Research output: Contribution to journal › Article › peer-review
• PublishedRiparian research and legislation, are they working towards the same common goals? A UK case study
  Lozano de Sosa Miralles, L., Williams, A., Orr, H. H. & Jones, D. L., Apr 2018, In: Environmental Science and Policy. 82, p. 126-135
  Research output: Contribution to journal › Article › peer-review
• PublishedSpatial zoning of microbial functions and plant-soil nitrogen dynamics across a riparian area in an extensively grazed livestock system
  de Sousa, L., Glanville, H., Marshall, M., Williams, A., Abadie, M., Clark, I. M., Blaud, A. & Jones, D. L., May 2018, In: Soil Biology and Biochemistry. 120, p. 153-164
  Research output: Contribution to journal › Article › peer-review

2017

• PublishedEffectiveness of a wool based packaging system on the abundance of surface spoilage microorganisms on meat products
  Curling, S., Jones, D., Ormondroyd, G. & Williams, A., 2017, In: Arab Gulf Journal of Scientific Research. 34, 2/3
  Research output: Contribution to journal › Article › peer-review

2016

• PublishedEffectiveness of a wool based packaging system on the abundance of surface spoilage microorganisms on meat products
  Lahmer, R. A., Morris, A., Curling, S., Ormondroyd, G., Jones, D. & Williams, A., May 2016, In: Assiut Journal of Agricultural Sciences (AJAS). 47, 2, p. 24-28
  Research output: Contribution to journal › Article › peer-review
• PublishedImproving livestock production efficiencies presents a major opportunity to reduce sectoral greenhouse gas emissions
  Hyland, J., Styles, D., Jones, D. & Williams, A., 1 Sept 2016, In: Agricultural Systems. 147, p. 123-131
  Research output: Contribution to journal › Article › peer-review
• PublishedMaking green technology greener: Achieving a balance between carbon and resource savings through ecodesign in hydropower systems
  Gallagher, J., Styles, D., McNabola, A. & Williams, A., 1 Dec 2016, In: Resources, Conservation and Recycling. 105, Part A, p. 11-17
  Research output: Contribution to journal › Article › peer-review

2015

• PublishedA strategic assessment of micro-hydropower in the UK and Irish water industry: Identifying technical and economic constraints
  Gallagher, J., Harris, I. M., Packwood, A. J., McNabola, A. & Williams, A. P., 20 Apr 2015, In: Renewable Energy. 81, p. 808-815
  Research output: Contribution to journal › Article › peer-review
• PublishedCattle feed or bioenergy? Consequential life cycle assessment of biogas feedstock options on dairy farms
  Styles, D., Gibbons, J., Williams, A. P., Stichnothe, H., Chadwick, D. R. & Healey, J. R., 10 Aug 2015, In: Global Change Biology Bioenergy. 7, 5, p. 1034–1049
  Research output: Contribution to journal › Article › peer-review
• PublishedConsequential life cycle assessment of biogas, biofuel and biomass energy options within an arable crop rotation
  Styles, D., Gibbons, J., Williams, A. P., Dauber, J., Stichnothe, H., Urban, B., Chadwick, D. R. & Jones, D. L., 26 Feb 2015, In: GCB Bioenergy. 7, 6, p. 1305-1320
  Research output: Contribution to journal › Article › peer-review
• PublishedCurrent and Future Environmental Balance of Small-Scale Run-of-River Hydropower
  Gallagher, J., Styles, D., McNabola, A. & Williams, A. P., 24 Apr 2015, In: Environmental Science and Technology. 49, 10, p. 6344-6351
  Research output: Contribution to journal › Article › peer-review
• PublishedFarmers’ perceptions of climate change: identifying types
  Hyland, J., Jones, D., Parkhill, K. A., Barnes, A. P. & Williams, A., 13 May 2015, In: Agriculture and Human Values. 33, 2, p. 323-339
  Research output: Contribution to journal › Article › peer-review
• PublishedInventory compilation for renewable energy systems: the pitfalls of materiality thresholds and priority impact categories using hydropower case studies
  Gallagher, J., Styles, D., McNabola, A. & Williams, A. P., 15 Oct 2015, In: International Journal of Life Cycle Assessment. 20, 12, p. 1701-1707
  Research output: Contribution to journal › Article › peer-review
• PublishedLife cycle environmental balance and greenhouse gas mitigation potential of micro-hydropower energy recovery in the water industry
  Gallagher, J., Styles, D., McNabola, A. & Williams, A. P., 11 Mar 2015, In: Journal of Cleaner Production. 99, p. 152-159
  Research output: Contribution to journal › Article › peer-review

2014

• PublishedA quantitative risk assessment for the safety of carcase storage systems for scrapie infected farms
  Adkin, A., Jones, D. L., Eckford, R. L., Edwards-Jones, G. & Williams, A. P., 21 Jul 2014, In: Journal of Applied Microbiology. 117, 4, p. 940-948
  Research output: Contribution to journal › Article › peer-review
• PublishedAssessing Soil Nitrogen Availability using Microdialysis-Derived Diffusive Flux Measurements
  Shaw, R., Williams, A. & Jones, D., 25 Sept 2014, In: Soil Science Society of America Journal. 78, 5, p. 1797-1803
  Research output: Contribution to journal › Article › peer-review
• PublishedChanges in the physicochemical properties and enzymatic activity of waste during bioreduction of pig carcasses
  Gwyther, C. L., Jones, D. L., Gertler, C., Edwards-Jones, G. & Williams, A. P., 28 Feb 2014, In: Environmental Technology. 35, 15, p. 1904-1915
  Research output: Contribution to journal › Article › peer-review
• PublishedEnergy recovery in the water industry using micro-hydropower: an opportunity to improve sustainability
  McNabola, A., Coughlan, P., Corcoran, L., Power, C., Williams, A. P., Harris, I., Gallagher, J. & Styles, D., 1 Feb 2014, In: Water Policy. 16, 1
  Research output: Contribution to journal › Article › peer-review
• PublishedEnergy recovery in the water industry: an assessment of the potential of micro-hydropower
  McNabola, A., Coughlin, P. & Williams, A. P., 1 Jun 2014, In: Water and Environment Journal. 28, 2, p. 294-304
  Research output: Contribution to journal › Article › peer-review
• PublishedSusceptibility of Escherichia coli O157 to chitosan-arginine in beef liquid purge is affected by bacterial cell growth phase
  Lahmer, R. A., Jones, D. L., Townsend, S., Baker, S. & Williams, A. P., 1 Feb 2014, In: International Journal of Food Science and Technology. 49, p. 515-520
  Research output: Contribution to journal › Article › peer-review
• PublishedSustainable nutrient management at field, farm and regional level: Soil testing, nutrient budgets and the trade-off between lime application and greenhouse gas emissions
  Gibbons, J. M., Williamson, J. C., Williams, A. P., Withers, P. J., Hockley, N., Harris, I. A., Hughes, J. W., Taylor, R. L., Jones, D. L. & Healey, J. R., 15 Apr 2014, In: Agriculture, Ecosystems and Environment. 188, p. 48-56
  Research output: Contribution to journal › Article › peer-review
• PublishedUse of commercial bio-inoculants to increase agricultural production through improved phophorous acquisition.
  Oween, D., Williams, A. P., Griffith, G. W. & Withers, P. J., 17 Oct 2014, In: Applied Soil Ecology. 86, p. 41-54
  Research output: Contribution to journal › Article › peer-review

2013

• PublishedAbsence of Escherichia coli 0157:H7 in sheep and cattle faeces in North Wales
  Alhefli, N. A., Adam, H., Jones, D. & Williams, P., 10 Aug 2013, In: Veterinary Record. 173, 6, p. 143-143
  Research output: Contribution to journal › Article › peer-review
• PublishedAssessing the Potential for Ion Selective Electrodes and Dual Wavelength UV Spectroscopy as a Rapid on-Farm Measurement of Soil Nitrate Concentration
  Shaw, R., Williams, A., Miller, A. & Jones, D., 2 Jul 2013, In: Agriculture. 3, 3, p. 327-341
  Research output: Contribution to journal › Article › peer-review
• PublishedBioreduction of Sheep Carcasses Effectively Contains and Reduces Pathogen Levels under Operational and Simulated Breakdown Conditions
  Golyshin, P., Gwyther, C. L., Jones, D. L., Golyshin, P. N., Edwards-Jones, G., McKillen, J., McNair, I., McDonald, J. E. & Williams, A. P., 21 May 2013, In: Environmental Science and Technology. 47, 10, p. 5267–5275
  Research output: Contribution to journal › Article › peer-review
• PublishedDeclining reactivation ability of Escherichia coli O157 following incubation within soil
  Williams, A. P., Gordon, H. E., Jones, D. L., Killham, K., Strachan, N. J. & Forbes, K. J., 1 Aug 2013, In: Soil Biology and Biochemistry. 63, p. 85-88
  Research output: Contribution to journal › Article › peer-review
• PublishedSubclinical infection and asymptomatic carriage of gastrointestinal zoonoses: occupational exposure, environmental pathways, and the anonymous spread of disease
  Quilliam, R. S., Cross, P., Williams, A. P., Edwards-Jones, G., Salmon, R. L., Rigby, D., Chalmers, R. M., Thomas, D. R. & Jones, D. L., 1 Oct 2013, In: Epidemiology and Infection. 141, 10, p. 2011-2021
  Research output: Contribution to journal › Review article › peer-review
• PublishedThe role of the natural environment in the emergence of antibiotic resistance in Gram-negative bacteria
  Wellington, E. M., Boxall, A. B., Cross, P., Feil, E. J., Gaze, W. H., Hawkey, P. M., Johnson-Rollings, A. S., Jones, D. L., Otten, W., Thomas, C. M. & Williams, A. P., 1 Feb 2013, In: Lancet Infectious Diseases. 13, 2, p. 155-165
  Research output: Contribution to journal › Article › peer-review

2012

• PublishedAntibacterial action of chitosan-arginine against Escherichia coli O157 in chicken juice
  Lahmer, R. A., Williams, A. P., Townsend, S., Baker, S. & Jones, D. L., 1 Jul 2012, In: Food Control. 26, 1, p. 206-211
  Research output: Contribution to journal › Article › peer-review
• PublishedCombining risk assessment and epidemiological risk factors to elucidate the sources of human E. coli O157 infection
  Rotariu, O., Ogden, I. D., MacRitchie, L., Forbes, K. J., Williams, A. P., Cross, P., Hunter, C. J., Teunis, P. F. & Strachan, N. J., 1 Sept 2012, In: Epidemiology and Infection. 140, 08, p. 1414-1429
  Research output: Contribution to journal › Article › peer-review
• PublishedFate of pathogens in a simulated bioreduction system for livestock carcasses
  Golyshin, P., Gwyther, C. L., Jones, D. L., Golyshin, P. N., Edwards-Jones, G. & Williams, A. P., 1 May 2012, In: Waste Management. 32, 5, p. 933-938
  Research output: Contribution to journal › Article › peer-review
• PublishedFungal and bacterial growth following the application of slurry and anaerobic digestate of livestock manure to temperate pasture soils
  Walsh, J. J., Rousk, J., Edwards-Jones, G., Jones, D. L. & Williams, A. P., 3 Apr 2012, In: Biology and Fertility of Soils. 48, 8, p. 889-897
  Research output: Contribution to journal › Article › peer-review
• PublishedInfluence of Land Use and Nutrient Flux on Metabolic Activity of E. coli O157 in River Water
  Williams, A. P., Quilliam, R. S., Thorn, C. E., Cooper, D., Reynolds, B. & Jones, D. L., 1 Jul 2012, In: Water, Air and Soil Pollution. 223, 6, p. 3077-3083
  Research output: Contribution to journal › Article › peer-review
• PublishedLettuce Cultivar Mediates Both Phyllosphere and Rhizosphere Activity of Escherichia coli O157:H7
  Quilliam, R., Williams, P. & Jones, D. L., 16 Mar 2012, In: PLoS ONE. 7, 3, p. e33842
  Research output: Contribution to journal › Article › peer-review
• PublishedReplacing inorganic fertilizer with anaerobic digestate may maintain agricultural productivity at less environmental cost
  Walsh, J. J., Jones, D. L., Edwards-Jones, G. & Williams, A. P., 1 Dec 2012, In: Journal of Plant Nutrition and Soil Science. 175, 6, p. 840-845
  Research output: Contribution to journal › Article › peer-review
• PublishedSeroprevalence and Risk Factors Associated with Escherichia coli O157 in a Farming Population
  Quilliam, R. S., Chalmers, R. M., Williams, A. P., Chart, H., Willshaw, G. A., Kench, S. M., Edwards-Jones, G., Evans, J., Thomas, D. R., Salmon, R. L. & Jones, D. L., 1 Mar 2012, In: Zoonoses and Public Health. 59, 2, p. 83-88
  Research output: Contribution to journal › Article › peer-review
• PublishedSurvival and metabolic activity of lux-marked Escherichia coli O157:H7 in different types of milk
  Alhelfi, N. A., Lahmer, R. A., Jones, D. & Williams, A. P., Aug 2012, In: Journal of Dairy Research. 79, 3, p. 257-261
  Research output: Contribution to journal › Article › peer-review

2011

• PublishedEscherichia coli O157: comparing awareness of rural residents and visitors in livestock farming areas
  Jones, C. D., Hunter, C., Williams, A. P., Strachan, N. J. & Cross, P., 7 Jan 2011, In: Epidemiology and Infection. 139, 10, p. 1522-1530
  Research output: Contribution to journal › Article › peer-review
• PublishedGrazing intensity is a poor indicator of waterborne Escherichia coli O157 activity
  Thorn, C. E., Quilliam, R., Williams, P., Malham, S., Cooper, D. M., Jones, D. L. & Reynolds, B., 1 Dec 2011, In: Anaerobe. 17, 6
  Research output: Contribution to journal › Article › peer-review
• PublishedThe environmental and biosecurity characteristics of livestock carcass disposal methods: a review.
  Gwyther, C. L., Williams, A. P., Golyshin, P. N., Edwards-Jones, G. & Jones, D. L., 1 Apr 2011, In: Waste Management. 31, 4, p. 767-778
  Research output: Contribution to journal › Article › peer-review
• PublishedUnearthing human pathogens at the agricultural–environment interface: A review of current methods for the detection of Escherichia coli O157 in freshwater ecosystems
  Quilliam, R. S., Williams, A. P., Avery, L. M., Malham, S. & Jones, D. L., 1 Mar 2011, In: Agriculture, Ecosystems and Environment. 140, 3-4, p. 354-360
  Research output: Contribution to journal › Article › peer-review

2010

• PublishedMicrobiological quality of chicken wings damaged on the farm or in the processing plant.
  Malpass, M. C., Williams, A. P., Jones, D. L. & Omed, H. M., 1 Jun 2010, In: Food Microbiology. 27, 4, p. 521-525
  Research output: Contribution to journal › Article › peer-review
• PublishedThe prevalence of non-treatment of sheep scab in Wales and the economic cost to the livestock industry: Final Report.
  Cross, P., Edwards-Jones, G., Omed, H. M. & Williams, A. P., 1 Jan 2010, 2010 ed. Unknown.
  Research output: Book/Report › Commissioned report
• PublishedUse of a Randomized Response Technique to obtain sensitive information on animal disease prevalence
  Cross, P., Edwards-Jones, G., Omed, H. & Williams, A. P., 1 Jan 2010, In: Preventive Veterinary Medicine. 96, 3-4, p. 252-262
  Research output: Contribution to journal › Article › peer-review

2009

• PublishedCommunication of bluetongue mitigation techniques.
  Cross, P., Williams, P. & Edwards-Jones, G., 21 Nov 2009, In: Veterinary Record. 165, 21, p. 636
  Research output: Contribution to journal › Article › peer-review
• PublishedDifferences in the perceptions of farmers and veterinary surgeons about the efficacy of mitigation strategies for controlling bluetongue.
  Cross, P., Williams, A. P. & Edwards-Jones, G., 3 Oct 2009, In: Veterinary Record. 165, 14, p. 397-403
  Research output: Contribution to journal › Article › peer-review
• PublishedHeat and lime-treatment as effective control methods for E.coli 0157:H7 in organic wastes
  Avery, L. M., Williams, P., Killham, K. & Jones, D. L., 1 May 2009, In: Bioresource Technology. 100, 10, p. 2692-2698
  Research output: Contribution to journal › Article › peer-review
• PublishedIn-vessel bioreduction provides an effective storage and pre-treatment method for livestock carcasses prior to final disposal
  Edwards-Jones, G., Jones, D. & Williams, A., 1 Sept 2009, In: Bioresource Technology. 100, p. 4032-4040 9 p.
  Research output: Contribution to journal › Article › peer-review

2008

• PublishedBioreduction of fallen stock – An evaluation of in-vessel bioreduction for containment of sheep prior to disposal: Final report
  Williams, A. P., Edwards-Jones, G. & Jones, D. L., 1 Jan 2008, 2008 ed. Unknown.
  Research output: Book/Report › Commissioned report
• PublishedChicken wing microbiology: finger licking good?
  Williams, A. P., 1 Jan 2008.
  Research output: Contribution to conference › Paper
• PublishedHow to compost a sheep.
  Williams, A. P., 1 Jan 2008.
  Research output: Contribution to conference › Paper
• PublishedLeaching of bioluminescent Escherichia coli O157:H7 from sheep and cattle faeces during simulated rainstorm events
  Williams, A. P., Gordon, H., Jones, D. L., Strachan, N. J., Avery, L. M. & Killham, K., 1 Nov 2008, In: Journal of Applied Microbiology. 105, 5, p. 1452-1460
  Research output: Contribution to journal › Article › peer-review
• PublishedMoisture, sawdust, and bleach regulate the persistence of Escherichia coli O157:H7 on floor surfaces in butcher shops
  Williams, A. P., Avery, L. M., Killham, K. & Jones, D. L., 1 Dec 2008, In: Food Control. 19, 12, p. 1119-1125
  Research output: Contribution to journal › Article › peer-review
• PublishedMoisture, sawdust, and bleach regulate the persistence of Escherichia coli O157:H7 on floor surfaces in meat-processing environments.
  Williams, A. P., 1 Jan 2008.
  Research output: Contribution to conference › Paper
• PublishedPersistence and metabolic activity of Escherichia coli O157:H7 in farm animal faeces
  Williams, A. P., McGregor, K. A., Killham, K. & Jones, D. L., 1 Oct 2008, In: FEMS Microbiology Letters. 287, 2, p. 168-173
  Research output: Contribution to journal › Article › peer-review
• PublishedReducing Escherichia coli O157 risk in rural communities
  Gordon, H., Roberts, J., Wossink, A., Jones, C., Hunter, C., Chadwick, D., Ogden, I., Jones, D., Rotariu, O., Strachan, N., Erdem, S., Rigby, D., Farrington, J., Teunis, P., Kosmider, R., Williams, P., Cross, P. & Killham, K., 1 Jan 2008, In: SAC-SEPA Proceedings: Agriculture in a Changing Environment.
  Research output: Contribution to journal › Article › peer-review
• PublishedSeeking an alternative method of dealing with fallen stock.
  Williams, A. P., 1 Jan 2008.
  Research output: Contribution to conference › Paper
• PublishedSurvival of Escherichia coli, O157 : H7 in waters from lakes, rivers, puddles and animal-drinking troughs.
  Avery, L. M., Williams, P., Killham, K. & Jones, D. L., 25 Jan 2008, In: Science of the Total Environment. 389, 2-3, p. 378-385
  Research output: Contribution to journal › Article › peer-review

2007

• PublishedPersistence, dissipation, and activity of Escherichia coli O157:H7 within sand and seawater environments.
  Williams, A. P., Avery, L. M., Killham, K. & Jones, D. L., 1 Apr 2007, In: Fems Microbiology Ecology. 60, 1, p. 24-32
  Research output: Contribution to journal › Article › peer-review
• PublishedSurvival of Escherichia coli O157:H7 in the rhizosphere of maize grown in waste-amended soil.
  Williams, A. P., Avery, L. M., Killham, K. & Jones, D. L., 1 Feb 2007, In: Journal of Applied Microbiology. 102, 2, p. 319-326
  Research output: Contribution to journal › Article › peer-review

2006

• PublishedEarthworms as vectors of Escherichia coli O157:H7 in soil and vermicomposts.
  Williams, A. P., Roberts, P., Avery, L. M., Killham, K. & Jones, D. L., 1 Oct 2006, In: Fems Microbiology Ecology. 58, 1, p. 54-64
  Research output: Contribution to journal › Article › peer-review

2005

• PublishedPersistence of Escherichia coli O157 on farm surfaces under different environmental conditions.
  Williams, A. P., Avery, L. M., Killham, K. & Jones, D. L., 18 Feb 2005, In: Journal of Applied Microbiology. 98, 5, p. 1075-1083
  Research output: Contribution to journal › Article › peer-review

2025

• Panel Member of the Senedd’s Economy, Trade and Rural Affairs Committee inquiry on Soil Health in Agriculture

  30 Apr 2025

  Activity: Types of External academic engagement - Contribution to the work of national or international committees and working groups (Contributor)

2024

• BBC Radio Cymru - Bwletin Amaeth

  Discussing C-footprinting work

  11 Mar 2024

  Activity: Types of Public engagement and outreach - Media article or participation (Contributor)

2023

• Recycling of Agricultural, Municipal and Industrial Residues in Agriculture Network (RAMIRAN) 2023 conference

  On the organising committee for the international "Recycling of Agricultural, Municipal and Industrial Residues in Agriculture Network (RAMIRAN) 2023 conference, Cambridge

  1 Feb 2023 – 20 Sep 2023

  Activity: Participation in Academic conference (Speaker)

2021

• Expert panel discussion on heat recovery potential of leisure centres

  Expert panel discussion on heat recovery potential of leisure centres

  Climate change poses significant challenges and the global community is not on track to meet sustainable development targets or the Paris Agreement to mitigate climate change. The Covid-19 pandemic and necessary government measures to curb the spread of the virus has put climate action on hold and shut down economies. The need for improved ventilation as an important mitigating factor against the risk of Covid-19 transmission has additional implications for costs and emissions for businesses.

  Leisure centres, as large users of water and energy, account for significant emissions and operational costs. However, there is scope for very significant reductions in water and water-related energy demands and associated emissions and costs without impacting service quality and delivery. These reductions can be a promising response to the current challenges of climate change and post-Covid-19 economic recovery.

  To discuss energy demands in leisure centres and the important contributions to emissions and cost reductions that can be made through heat recovery, the Dŵr Uisce project (https://www.dwr-uisce.eu/) is hosting an expert panel discussion on heat recovery as one of the several ways these reductions can be made.

  The panellists will be discussing a range of questions and some of the current opportunities, challenges, and risks associated with installing heat recovery in leisure centres in order to promote resource conversation and ideas on how leisure centres can take climate action and also save costs and improve environmental footprint in the process.

  23 Feb 2021

  Activity: Participation in Academic workshop, seminar, course (Speaker)

• Land use for net zero – Hub (LUNZ-Hub)

  01/11/2023 – 15/03/2027 (Active)

• Data Integration of Nutritional Attributes of Welsh Lamb

  03/04/2023 – 28/08/2024 (Finished)

• Nutritional Benefits of Welsh Lamb

  03/04/2023 – 28/08/2024 (Finished)

• KESS II MRes with Kepak Ltd- BUK2E082

  01/07/2022 – 31/03/2024 (Finished)

• The environmental cost-benefits of different grazing regimes

  01/05/2021 – 17/09/2024 (Finished)

• Carbon neutral farming

  01/02/2021 – 01/08/2022 (Finished)

• Understanding Rotational “mob” Grazing: Impacts, Benefits and Trade-offs

  01/01/2021 – 17/09/2024 (Finished)

• KESS II Phd with Hybu Cig Cymru BUK2E017

  01/08/2020 – 31/03/2024 (Finished)

• Carbon footprinting of Welsh farms

  01/07/2020 – 31/03/2021 (Finished)

• KESS II Phd with Innovis- BUK2136

  24/09/2018 – 31/03/2024 (Finished)

• Navigating Welsh businesses through the water-energy nexus to shrink carbon and resource footprints: workshop

  01/06/2017 – 01/08/2018 (Finished)

• Priorities for UK Upland Land-Use – Developing a Modelling Framework to Facilitate Decision-Making by Policy-Makers: workshop

  01/06/2017 – 01/08/2018 (Finished)

• KESS II PhD project with Hybu Cig Cymru BUK215

  01/10/2016 – 01/08/2022 (Finished)

• KESS II PhD project with The Glenside GroupLtd BUK261

  01/10/2016 – 01/08/2022 (Finished)

• 80910 Dwr Uisce

  01/06/2016 – 31/12/2199 (Active)

  Links:

  • https://www.dwr-uisce.eu/

• Henfaes Research Centre: Innovation Site for Farming Connect

  01/10/2015 – 01/08/2019 (Finished)

• Hydro BPT

  01/05/2011 – 17/09/2024 (Finished)

  Description

  Bydd y prosiect Hydro-BPT yn hybu cynaliadwyedd y diwydiant cyflenwi dŵr yn Iwerddon a Chymru drwy fanteisio ar y potensial ar gyfer adfer ynni sy'n bodoli yn y diwydiant dŵr. Nod y prosiect yw cyflwyno'r diwydiannau cyflenwi dŵr ac ynni dŵr yn ardal draws-ffiniol Iwerddon Cymru gyda fframwaith clir o ble i greu gweithgarwch economaidd a gwella cynaliadwyedd cyflenwad dŵr. Mae'r prosiect Hydro-BPT yn cael ei ariannu'n rhannol gan Gronfa Datblygu Rhanbarthol Ewrop drwy Raglen Iwerddon Cymru (INTERREG 4A).

  ************

  Hydro-BPT will advance the sustainability of the process of water supply in Ireland and Wales by exploiting the potential for energy recovery that exists in the water industry. The aim of the project is to present the water supply and hydropower industries in the Ireland Wales cross-border area with a clear framework from which to create economic activity and improve water supply sustainability. The Hydro-BPT project is part funded by the European Regional Development Fund through the Ireland Wales Programme (INTERREG 4A).

  Links:

  • http://hydro-bpt.bangor.ac.uk/

• Bioreduction of Fallen Stock: Part II

  01/09/2008 – 31/07/2013 (Finished)

• Hcc - Biological Diigester Study At Hrs

  01/03/2007 – 31/08/2009 (Finished)