I am a PhD student & technician working on a global GCRF funded project investigating the effect of agricultural plastic use on food security and sustainable development in developing countries. My research within this project focuses on the effect, fate, and legacy of agricultural mulch film use on the agroecosystem. I am interested in the chemical degradation of plastic, changes to soil microbial communities and general effects on soil & crop health.

• MSc: Ecology & Conservation
  Uppsala University, 2018–2020
• BSc: Biology
  Ludwig-Maximillan Universität München, Munich, Germany, 2013–2016
• MSc: Erasmus+ Exchange Student
  College of Life and Environmental Sciences, University of Exeter, Penryn Campus, Penryn, 9 TR10 9EZ, UK., 2019–2020

2025

• CyhoeddwydAssessment of Four Artificial Methods for Aging Plastic Mulch Films According to Efficiency, Rate, and Similarity to Natural Field-Aged Plastics
  Graf, M., Reay, M. K., Dimitriou, A., Chadwick, D. & Jones, D. L., 18 Ion 2025, Yn: Journal of Polymers and the Environment.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydHigher potential leaching of inorganic and organic additives from biodegradable compared to conventional agricultural plastic mulch film
  Reay, M. K., Graf, M., Murphy, M., Li, G., Yan, C., Bhattacharya, M., Osbahr, H., Ma, J., Chengtao, W., Shi, X., Ren, S., Cui, J., Collins, C., Chadwick, D., Jones, D. L., Evershed, R. P. & Lloyd, C., 25 Ion 2025, Yn: Journal of Hazardous Materials. 488, 137147.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSeparation and Identification of Conventional Microplastics from Farmland Soils
  Ren, S., Graf, M., Wang, K., Zhang, J., Zhang, H., Liu, X., Li, J., Zu, T., Ren, K., Sun, Y., Qi, R., Collins, B., Xu, L., Jiang, X., Cui, J., Ding, F., Yan, C., Liu, X., Jones, D. L. & Chadwick, D., 21 Maw 2025, Yn: Journal of Visualized Experiments. 217
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2024

• Cyhoeddwyd12-month field degradation of mulch films above &below ground - effect on polymer properties, soil microbial communities & MP production rate
  Graf, M. & Dimitriou, A., 5 Mai 2024.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Murlen › adolygiad gan gymheiriaid
• CyhoeddwydField-based assessment of the effect of conventional and biodegradable plastic mulch film on nitrogen partitioning, soil microbial diversity, and maize biomass
  Graf, M., Greenfield, L., Reay, M. K., Bargiela, R., Golyshin, P., Evershed, R. P., Lloyd, C. E. M., Williams, G., Chadwick, D. & Jones, D. L., 1 Hyd 2024, Yn: Applied Soil Ecology. 202, 105595.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• E-gyhoeddi cyn argraffuMicrobial degradation of bioplastic (PHBV) is limited by nutrient availability at high microplastic loadings
  Reay, M. K., Graf, M., Greenfield, L., Bargiela, R., Onyije, C., Lloyd, C. E. M., Bull, I. D., Evershed, R. P., Golyshin, P., Chadwick, D. & Jones, D. L., 29 Hyd 2024, (E-gyhoeddi cyn argraffu) Yn: Environmental Science: Advances. 4, t. 133-146 14 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2023

• CyhoeddwydBioplastic (PHBV) addition to soil alters microbial community structure and negatively affects plant-microbial metabolic functioning in maize
  Brown, R. W., Chadwick, D. R., Zang, H., Graf, M., Liu, X., Wang, K., Greenfield, L. M. & Jones, D. L., 5 Ion 2023, Yn: Journal of Hazardous Materials. 441, 129959.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydIncreasing concentration of pure micro- and macro-LDPE and PP plastic negatively affect crop biomass, nutrient cycling, and microbial biomass
  Graf, M., Greenfield, L., Reay, M. K., Bargiela, R., Williams, G., Onyije, C., Lloyd, C. E. M., Bull, I. D., Evershed, R. P., Golyshin, P., Chadwick, D. & Jones, D. L., 15 Medi 2023, Yn: Journal of Hazardous Materials. 458, t. 131932
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydLDPE and biodegradable PLA-PBAT plastics differentially affect plant-soil nitrogen partitioning and dynamics in a Hordeum vulgare mesocosm
  Reay, M. K., Greenfield, L. M., Graf, M., Lloyd, C. E. M., Evershed, R. P., Chadwick, D. R. & Jones, D. L., 5 Ebr 2023, Yn: Journal of Hazardous Materials. 447, 130825.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2022

• CyhoeddwydField response of N2O emissions, microbial communities, soil biochemical processes and winter barley growth to the addition of conventional and biodegradable microplastics
  Greenfield, L. M., Graf, M., Rengaraj, S., Bargiela, R., Williams, G., Golyshin, P. N., Chadwick, D. R. & Jones, D. L., 15 Medi 2022, Yn: Agriculture, Ecosystems and Environment. 336, 108023.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid