
Daniel Adshead
School of Geography and the Environment
DPhil Researcher
Daniel’s doctoral research focuses on the role of infrastructure in sustainable development. In particular, he looks at how infrastructure investments and policies can be most effectively implemented in order to achieve progress toward the UN Sustainable Development Goals. Daniel uses engineering-based national infrastructure systems models to assess infrastructure needs in the context of uncertainty around future demographic, economic and climate change drivers in a range of international contexts, including small island and post-conflict countries.

Dr Ariell Ahearn
School of Geography and the Environment
Faculty and Research
Ariell’s current research aims to understand the relationship between social systems, resource distribution and governance frameworks in regions undergoing economic transformation. She specializes in qualitative research, using methods such as ethnographic participant observation, interviewing, mapping and immersive field work to document and analyze the conditions that inform human decision-making and organization.

Dr Imad Ahmed
Department of Earth Sciences
Faculty and Research
Imad’s research interests and expertise are in the ‘chemical speciation’ of trace elements in a diversity of natural and engineering environments (aquatic and terrestrial). He is particularly interested in the chemistry of redox-active nanomaterials and their influence on the cycling of trace elements and nutrients. He is currently developing a new nanoparticle-assisted technology for pollution monitoring. He is also active in research related to cellular deposition of nanoparticles (e.g., nanomagnetites in the human brain) and in the formation of redox-active nanoparticles in aqueous environments.





Professor Chris Ballentine
Department of Earth Sciences
Faculty and Research
Chris is the Chair of Geochemistry in the Department of Earth sciences and has a broad interest in groundwater interaction with hydrocarbon, helium, nitrogen and carbon-dioxide (CO2-sequestration) multiphase systems. He uses noble gas isotopic tracers to understand groundwater residence and the source of geogenic gases. He is the Oxford PI on a 5 year USGS initiative to identify the impact of historical hydrocarbon production on Californian drinking water supplies.

Dr Paola Ballon
School of Geography and the Environment
Faculty and Research
Dr Paola Ballon is a Research Associate at the Smith School of Enterprise and the Environment and former Researcher in Development Economics of the REACH - Improving Water Security for the Poor programme (DFID, 2015-2022), and the Oxford Poverty and Human Development Initiative, Oxford University, U.K. She is an econometrician with expertise in the measurement and statistical analysis of multidimensional poverty, female empowerment and water-security.





Professor David Bradley
School of Geography and the Environment
Faculty and Research
David Bradley is Ross Professor of Tropical Hygiene Emeritus at the London School of Hygiene and Tropical Medicine, with expertise in domestic water supply and public health, including the landscape epidemiology of water-related disease, taxonomy and functional classification of small water bodies, and health hazards of water storage.

Marcus Buechel
School of Geography and the Environment
DPhil Researcher
Marcus is a PhD student at the School of Geography and the Environment and convenor of the Oxford Hydrology Group. He obtained an MSci (First Class Honours) at Durham University where his dissertation investigated floodplain representation in a 2D flood inundation model. For his Master’s project he undertook a pivoting analysis to understand bedrock river morphology and alluvial cover influence on gravel entrainment. He has earned the W.A. Moyes Prize for exemplary fieldwork, Best MSci Graduate award and the Vice-Chancellor’s Academic Excellence Scholarship (2017-2018). Within the geography department at Durham, he also investigated loess landslides and geomorphological indicators which could determine their age when utilising satellite imagery. Marcus has specialised in fluvial geomorphology, hydrology, GIS and remote sensing skills.

Ben Caldecott
School of Geography and the Environment
Faculty and Research
Ben’s research is focussed on the intersection between environmental sustainability and applied economics and finance. Particularly in how financial institutions are affected by environmental factors, what they can do to manage these factors, and the implications of managing or failing to manage them. Ben is also interested in how environmental policy and regulation interacts with finance and vice versa. Ben has ongoing research exposure to other sustainability topics, including: international and domestic climate change policy; low carbon economic development; renewable energy investment; energy efficiency policy; biodiversity and protected area conservation; prudential regulation and systemic risk; carbon markets; and ‘green’ financial centres.

Cherona Chapman
Environmental Change Institute
DPhil Researcher
Cherona Chapman is a DPhil student at the University of Oxford. Her research focuses on the interplay of green and grey drainage systems in our contemporary and future societies. In particular, her current work examines constraints of the built environment on sustainable drainage infrastructure, and the potential role of these drainage systems in large-scale green infrastructure networks.

Dr Katrina Charles
School of Geography and the Environment
Faculty and Research
Dr Charles is an environmental engineer by training, who leads an interdisciplinary research team on water security. Her work addresses the challenge of providing sustainable water, sanitation and hygiene (WASH) services for all, with a focus on risk-based approaches in developing countries to improve health outcomes for all. She co-directs REACH - Oxford's largest water security programme.

Dr Alexandre Chausson
Department of Zoology
Faculty and Research
Alexandre manages and collaborates on the delivery of several research and knowledge-exchange outputs for the Nature-based Solutions initiative. This includes a systematic review of the evidence base on the effectiveness Nature-based Solutions for climate change adaptation and collaborating on the design and generating content for the Nature-based Solutions Initiative platform. His aim is to support innovative interdisciplinary research and the development of transdisciplinary collaborations as pathways to impact at the nexus of development, climate change, and biodiversity issues.

Alice Chautard
School of Geography and the Environment
Management & Support
Alice is responsible for the strategy and the delivery of internal and external communications for the REACH programme, and ensuring the effective delivery of the Research into Action Strategy. She has an MSc in Water Science, Policy and Management from the University of Oxford.