I completed my PhD in Soil & Environmental Science (2025) with a focus on the fate and impact of agricultural mulch film use on agroecosystems. My research interests include environmental pollution, sustainable land use, and ecosystem conservation. 

• PhD: Soil & Environmental Science
  2021–2025
• MSc: Ecology & Conservation
  College of Life and Environmental Sciences, University of Exeter, Penryn Campus, Penryn, 9 TR10 9EZ, UK., 2019–2020
• MSc: Ecology & Conservation
  Uppsala University, 2018–2020
• BSc: Biology
  Ludwig-Maximillan Universität München, Munich, Germany, 2013–2016

2025

• CyhoeddwydAccumulation of soil microplastics and phthalate esters in nine typical Chinese croplands using plastic mulch film
  Sun, Y., Li, S., Ding, F., Graf, M., Qi, R., Liu, X., Wang, K., Ge, T., Wang, J., Chadwick, D. & Jones, D. L., 7 Tach 2025, Yn: Frontiers of Agricultural Science and Engineering. 23, 1, 25660 .
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• E-gyhoeddi cyn argraffuAddition of inorganic nitrogen significantly increases the real and apparent priming effects of polyethylene and PHBV microplastics in soil
  Brown, R., Florent, P., Graf, M., Kennaway, S., Collins, B., Chadwick, D. & Jones, D. L., 12 Hyd 2025, (E-gyhoeddi cyn argraffu) Yn: Journal of Hazardous Materials. 499, 140125.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• 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
• CyhoeddwydBiodegradable and non-biodegradable plastic mulches enhance chili production in Sri Lankan wet zone agriculture
  Thennakoon, N., Wickrama, S., Madhuranga, N., Jayasundara, C., Dias, A., Thumbe Dhura, M. G., Ariyaratna, M., Karunarathna, A., Chathurika, S., Graf, M., Reay, M. K., Chadwick, D. & Jones, D. L., 15 Awst 2025, Yn: Frontiers of Agricultural Science and Engineering. 13, 1, 25648.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydBiodegradable mulch films exhibit slower-than-expected degradation with negligible effects on soil microbial communities
  Graf, M., Choiselat, E., Reay, M. K., Bargiela, R., Dimitriou, A., Liu, Q., Elias, R., Golyshin, P., Griffiths, R., Chadwick, D. & Jones, D. L., 15 Hyd 2025, Yn: Journal of Hazardous Materials. 498
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDifferential effects of field-aged versus new LDPE and PLA/PBAT plastic film fragments on soil quality and crop productivity
  Graf, M., Reay, M. K., Florent, P. J., Brown, R. W., Chadwick, D. R. & Jones, D. L., 15 Medi 2025, Yn: Journal of Hazardous Materials. 496, t. 139398
  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
• E-gyhoeddi cyn argraffuSize-dependent effects of oxo-degradable plastic contamination on soil quality and the growth of Zea mays
  Thanh, D. T. K., Graf, M., Brown, R., Reay, M. K., Lloyd, C. E. M., Li, G., Jones, D. L. & Chadwick, D., 22 Mai 2025, (E-gyhoeddi cyn argraffu) Yn: Frontiers of Agricultural Science and Engineering. 13, 1
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSoil property controls on plasticiser, antioxidant and UV absorber additive degradation across a global soil gradient
  Reay, M. K., Graf, M., Murphy, M., Monkley, C., Florent, P. J., Collins, B. I., Van Hien, N., Tien, T. M., Fernandes, A. N., Adhikari, T., Viljoen, S., Tolba, M., Mosa, A., Chadwick, D. R., Jones, D. L., Evershed, R. P. & Lloyd, C. E. M., 4 Rhag 2025, Yn: Environmental Science and Pollution Research.
  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