Prof Mariecia Fraser


Prof Mariecia Fraser

Professor in Upland Agroecosystems


Contact Details


Head, Pwllpeiran Upland Research Centre

Additional Information

Member, Natural England Scientific Advisory Committee (2018-present)

Member, Hybu Cig Cymru Research and Knowledge Exchange Advisory Committee (2018-present). 

Council member, British Grassland Society (2016-2020)

Editor, Animal: an international journal of bioscience


I have a background in animal science and grazing ecology and specialise in developing and testing management strategies for upland systems. My research interests include: species and breed differences in diet selection and ingestive behaviour, conservation grazing, nutrient supply from forages, greenhouse gas emissions from grazing animals, and the bio-energy potential of semi-natural grasslands.  I have worked with a range of animal species (sheep, cattle, goats, ponies, deer, South American camelids) and pasture types (cultivated, improved permanent pasture and semi-natural grass and heath communities), as well as fresh and ensiled alternative forages (high WSC grasses, forage legumes, brassicas, pulses and bi-crops), to deliver a range of products (meat, fibre, habitats and biorenewables).  

Research Groups

  • Agri Systems


Hurst, G, Prasad Pant, L, Fraser, M & Santika, T 2024, 'Navigating just transition pathways to net zero in Welsh livestock farming', Livestock, Environment and People Conference, Oxford, United Kingdom of Great Britain and Northern Ireland, 16 Apr 2024 - 16 Apr 2024.
Quail, MR & Fraser, MD 2024, 'Pulling the wool over their eyes? Object permanence, numerical competence and categorisation in alternative livestock species', Applied Animal Behaviour Science, vol. 270, 106131. 10.1016/j.applanim.2023.106131
Fraser, M, Vallin, H & Roberts, B 2022, 'Grassland-based livestock farming and biodiversity', Animal, vol. 16, no. 12, 100671. 10.1016/j.animal.2022.100671
Hayward, A, Behnke, J, Childs, D, Corripio-Miyar, Y, Fenton, A, Fraser, M, Kenyon, F, McNeilly, T, Pakeman, RJ, Pedersen, A, Pemberton, J, Sweeny, A, Wilson, K & Pilkington, J 2022, 'Long-term temporal trends in gastrointestinal parasite infection in wild Soay sheep', Parasitology, vol. 149, no. 13, pp. 1749-1759. 10.1017/S0031182022001263
Compton, L, J.A.N., M, Barker, ZE, Bannick, A, Dijkstra, J, Tamminga, S, Anthony, SG, Aubry, A, Duthie, CA, Fraser, M, Misselbrook, TH, Moorby, J, Williams, AG, Yan, T & Reynolds, CK 2022, 'Models of enteric methane emission and nitrogen excretion by sheep and cattle: Recommendations for the UK national greenhouse gas inventory', Animal - Science proceedings, vol. 13, no. 4, pp. 540-541. 10.1016/j.anscip.2022.07.417
More publications on the Research Portal