Development and testing of a coupled vegetation / sediment-transport model for dryland environments
Jerome is a NERC-funded doctoral student in the School of Geography and the Environment. He holds a first-class BA (Hons) in Geography from the University of Oxford and an MPhil in Polar Studies from the University of Cambridge. Jerome's earlier research focused on coastal limestone environments in southern France, and glacial dynamics in western Greenland.
Prior to joining the DPhil programme, Jerome worked for an international sustainability consultancy, and as a researcher at the BBC and Channel 4. He has given several talks and lectures about Arctic research and academia in local schools.
Awards and Funding
- 2015-2017 - Mann Senior Scholarship, Herford College (Oxford)
- 2013-2017 - Natural Environmental Research Council Studentship
- 2013-2016 - Graduate Scholarship, St Catherine's College (Oxford)
- 2011-2012 - Derek Brewer MPhil Studentship, Emmanuel College (Cambridge)
- 2011 - Gibbs Prize and H O Beckit Prize, University of Oxford
- 2009-2011 - Undergraduate Scholarship, Worcester College (Oxford)
Jerome is interested in the interactions between vegetation and wind in semi-arid deserts, and how complex vegetation patterns affect the movement of sediment across a desert surface.
Distinctive vegetation patterns (e.g. 'spots' and 'stripes') occur in most drylands, likely emerging from competition and facilitation between individual plants. Recognisable pattern sequences are thought to result from human- and climate-induced stress, but relatively little is known about the impact of these pattern variations on wind profiles, and therefore on sand erosion and transport. This knowledge gap must be addressed given the significant changes in climate and land use that are predicted to occur over the 21st century.
Jerome's DPhil project combines fieldwork in southern Africa with modelling techniques, in order to address the linkages between vegetation patterning, wind and sediment movement. The model he develops will hopefully improve our understanding of the potential for future desertification in socio-economically vulnerable regions around the world.
Fig. 1 - Measuring turbulence downwind of a shrub in the Kalahari Desert, Namibia.
Fig. 2 - Long-term wind monitoring station in the southern Namib Desert, Namibia.
Fig. 3 - Aerial 3D survey of barchan dunes in the Skeleton Coast, Namibia, using a low-cost UAV (Unmanned Aerial Vehicle).
Jerome is a Stipendiary College Lecturer at Keble College, delivering the Prelims Geomorphology tutorial programme for undergraduate students. Jerome has assisted on undergraduate fieldtrips to Tenerife, and is an active member of the Oxford Rock Breakdown Laboratory.
- Mayaud, J.R. and Webb, N.P. (2017) Vegetation in Drylands: Effects on Wind Flow and Aeolian Sediment Transport. Land, 6(3).
- Mayaud, J.R., Bailey, R.M. and Wiggs, G.F.S. (2017) A coupled vegetation/sediment-transport model for dryland environments. Journal of Geophysical Research: Earth Surface, 122(4): 875-900.
- Mayaud, J.R., Bailey, R.M. and Wiggs, G.F.S. (2017) Modelled responses of the Kalahari Desert to 21st century climate and land use change. Scientific Reports, 7(3887): 1-12.
- Mayaud, J.R., Bailey, R.M., Wiggs, G.F.S. and Weaver, C.M. (2017) Modelling aeolian sand transport using a dynamic mass balancing approach. Geomorphology, 280: 108-121.
- Mayaud, J.R., Wiggs, G.F.S. and Bailey, R. (2017) A field-based parameterisation of wind flow recovery in the lee of dryland plants. Earth Surface Processes and Landforms, 42(2): 378-386.
- Mayaud, J., Wiggs, G. and Bailey, R. (2016) Characterising turbulent wind flow around dryland vegetation. Earth Surface Processes and Landforms, 41(10): 1421-1436.
- Mayaud, J.R., Wiggs, G.F.S. and Bailey, R. (2016) Dynamics of skimming flow in the wake of a vegetation patch. Aeolian Research, 22: 141-151.
- Wilhelm, K., Viles, H., Burke, O. and Mayaud, J. (2016) Surface hardness as a proxy for weathering behaviour of limestone heritage: a case study on dated headstones on the Isle of Portland, UK. Environmental Earth Sciences, 75(931): 1-16.
- Mayaud, J.R., Banwell, A.F., Arnold, N.S. and Willis, I.C. (2014) Modeling the response of subglacial drainage at Paakitsoq, West Greenland, to 21st century climate change. Journal of Geophysical Research: Earth Surface, 110(12): 2619-2634.
- Mayaud, J.R., Viles, H.A. and Coombes, M.A. (2014) Exploring the influence of biofilm on short-term expansion and contraction of supratidal rock: an example from the Mediterranean. Earth Surface Processes and Landforms, 39(10): 1404-1412.
- Willis, I., Arnold, N., Banwell, A. and Mayaud, J. (2012) Modelling the seasonal evolution of supraglacial lakes on the Greenland ice sheet during the 21st Century. International Glaciological Society 2012 Conference, Fairbanks, Alaska [POSTER].