Log in
Geography at Exeter has a well-established reputation for research on the effects of soil erosion and land management on soil quality, diffuse pollution, and on water quality in UK river systems. Since 2008, this research has been used to inform DEFRA policy, in relation to soils, water, and the DEFRA code of good agricultural practice. Dissemination of effective approaches to land management, most especially through the Catchment Sensitive Farming Initiative has resulted in clearly demonstrable changes in farming practice by landowners in several priority river catchments within the UK, demonstrating a positive change in behaviour and improved management of environmental risk. In addition, research on agricultural erosion has been used in the development of new agricultural policy practices in Canada.
Research undertaken by Professor Phil Jordan on nutrient pollution from land to waters has led to significant changes in government policy and in expectations for Water Framework Directive (WFD) and Waste Directive (WD) compliance in Ireland. The WFD is European wide legislation requiring that all water-bodies should be of at least good ecological status by 2015. His research has provided unequivocal scientific evidence that bio-physical lag times preclude the achievement of WFD water quality targets from diffuse source pollution by 2015. This has led to targets for good water quality in all River Basin Management Plans being extended without threat of European fines. Further, inclusion of Jordan's research on the specific environmental risk of rural point source pollution in assessments of septic tank system risk has resulted in the overturning of a European Court ruling under the Waste Directive, and the consequent lifting of daily fines of €19,000.
Wildfires can reduce the wettability of soil (i.e. increase their water repellency), accelerating runoff and erosion that in turn can cause flooding, landslides and aquifer contamination. Our research has revealed a link between fire severity and soil wettability that has led to substantial changes in the policy for mandatory post-fire assessments by the United States Forest Service (USFS). Implemented in 2011, these changes have resulted in improved land-rehabilitation practice in the USA. Moreover, this practice is being increasingly applied elsewhere, including Canada, Australia and parts of Europe, all of which now include specific consideration of soil wettability following severe fires and are underpinned by the methodology we developed. Based on these assessments, landscape-rehabilitation is applied at high-risk areas following wildfires, to limit the threats to life, property, infrastructure and ecosystem quality arising from excessive runoff and erosion. In the USA, for example, ~1.3 million hectares of burned land have been assessed in 2012 using the new post-fire assessment guidelines.
New characterisation tools for natural organic matter (NOM) in drinking water are now used as standard practice within water companies such as Severn Trent Water, United Utilities and Yorkshire Water. The tools inform decisions, and help develop strategic plans on catchment management, source selection, treatment optimisation, and disinfection practice. Water companies experienced difficulties in treating high levels of NOM. Cranfield created a novel characterisation toolkit to measure NOM for its electrical charge and hydrophobicity. Also, new techniques for measuring aggregate properties and emerging disinfection by-products have provided a comprehensive analysis. Two novel treatment technologies are currently marketed. These technologies have raised international interest, resulting in industrial development in Australia.
Impact of peat research at NTU comprises:
Research on peatland hydrology and erosion has been used by stakeholders including Defra, International Union for the Conservation of Nature (IUCN), Natural England, Scottish Natural Heritage, Moors for the Future, RSPB, water companies, horticultural peat producers and Environment Agency to improve policy and practice in the management of peatland habitats. Research into alternative growing media for use in horticulture, pioneered by Carlile in conjunction with William Sinclair Horticulture, contributed to development of market-leading brand New Horizon.
By modelling the formation of micro-bubbles and the flows induced by them, researchers at the University of Cambridge Department of Applied Mathematics and Theoretical Physics developed a new, low-cost nozzle design that could be retrofitted to existing Dissolved Air Flotation (DAF) systems. This new design dramatically improved the performance of DAF systems, used by the water industry for the production of drinking water. Specifically, this research has enabled a substantial increase in throughput and effectiveness of the flotation process, whilst simultaneously providing a dramatic decrease in the energy requirement.
Research at Cranfield has underpinned national policies for managing and allocating the UK's agricultural water resources over the past 20 years. It has supported major reforms in water policy, abstraction legislation and drought management. It has done this by modelling spatial and temporal variations in demand for irrigation, linking this to the financial impacts of water stress on crop yield and quality, projecting future demand, and assessing climate change impacts and potential adaptations. It has also significantly impacted the agri-food sector, helping agribusinesses assess the viability of irrigation and reservoir investment, encouraging collaboration, and reducing risks in the food supply chain.
Spinout Salamander was created to exploit research in the UoA on environmental monitoring. Building on the research, the company has developed and marketed a suite of branded products: two for monitoring water-quality in distribution (Hydraclam® and Chloroclam®) and one for monitoring ground gas (Gasclam®). In each case the defining feature is the ability to provide secure, standalone, continuous monitoring. The products have been licensed to Siemens (Hydraclam® and Chloroclam®) and Ionscience (Gasclam®), and have had significant impact on "best practicable means" and, hence, major impacts on regulated industries. Since 2008, Salamander has received royalties of over £1.0m, commensurate with end-user sales of £7.0m.
The virtual water concept is used to identify and quantify water use which is hidden, or embedded within the production and supply of food and other commodities. Its primary application has been to demonstrate that the majority of water consumed globally is used within the production and trade of food. Introduced and developed by Allan, virtual water research has transformed public and private sector water policy and its metrics in the UK and internationally. Instantiated through conceptual work published in 1993 and 1994 and developed through empirical studies thereafter, virtual water was widely adopted by 2000. The idea is now accepted as an essential element in the framing of policy on water security and its economic systems. Virtual water has been increasingly deployed by advisers to governments, corporations and NGOs, below we provide evidence from the U.S. State department, Coca Cola, WWF and the World Economic Forum, this is by no means a complete list. In 2011 the UK House of Lords and UK government's official response urged the EU Commission to incorporate virtual water in EU Policy. In recognition of the global conceptual impact of virtual water, Tony Allan was awarded the Stockholm Water Prize, 2008. In 2013, in recognition of impact made in preceding years through his virtual water concept and research Allan was also awarded the Foundation Prince Albert II de Monaco Water Award and the International Environmentalist Award of the Florence-based Fondazione Parchi Monumentali Bardini e Peyron.
Diarrhoeal disease is the world's second most common cause of death in children under five years old, killing 760,000 children each year according to the World Health Organisation (WHO). Microbial contamination of drinking water is one of the most important causes. In England and Wales acute diarrhoeal disease is estimated to cost the country £1.5 billion annually. UEA epidemiologists have shown the important role of water supply systems in spreading diarrhoeal disease in developed and developing countries; led WHO research projects on small scale drinking water systems; and influenced WHO policy on small scale drinking water systems in developed and developing countries. Methodological research on epidemiological methods for monitoring and regulating bathing water quality has led to changes in WHO guidance on bathing water quality standards and influenced US Environmental Protection Agency criteria. Hunter's participation in international expert panels facilitated the impact of this research on policy.