Dr Stephen Haley
Senior Laboratory Manager

Research

Research interests

Stephen is particularly interested in sustainable environmental water management through improved understanding of the relationship between catchment scale agricultural land use practises and water quality. His current role balances responsibility for the efficient and effective delivery of UOE geography laboratory services, with scientific research to inform the practical management of river catchments.

Research projects

Stephen has recently returned to Exeter after working as a Catchment Sensitive Farming Officer on the River Wensum, Norfolk,for Natural England. This work centred around delivering evidence based advice and training to farmers, in order to mitigate against the risks of diffuse water pollution from agriculture. The role also involved partnership research work in conjunction with the Environment Agency, Norfolk County Council, the Highways Agency and the Wensum Demonstration Catchment project based at the University of East Anglia

Stephen is currently involved in joint research project with the University of Plymouth and the environmental consultancy APEM, examining contemporary sediment sources in the River Mease catchment, Leicestershire, UK.

Stephen has previously delivered various research work for ADAS (UK) Ltd, through the University of Exeter, including an important component of a major sediment sourcing module within the Defra / Environment Agency Demonstration Test Catchment (DTC) programme. The sediment sourcing module was designed on the basis of using control and manipulated target sub-catchments within a Before-After, Control-Impact (BACI) experimental design for assessing the impact of on-farm mitigation measures on particulate matter (inorganic and organic) emissions to streams. The sourcing work combined revised geochemical sediment fingerprinting for inorganic particulate matter with a range of methods for tracing particulate organic matter, including the use of biomarkers, compound-specific stable isotopes and bulk stable isotopes (analysed at North Wyke Research) as well as excitation emission fluorescence spectroscopy and near infrared reflectance (NIR) (analysed at the University of Southampton).

Stephen also provided expert technical support in radio-isotope dating of floodplain cores for a research team at Exeter, lead by Dr Andrew Nicholas. The project aimed to improve understanding of how rivers and floodplains interact to construct, preserve and recycle sediments and associated stratigraphy on the Rio Beni, in the Bolivian Amazon.

Stephen previously worked with a team from Plymouth University on a novel research project, which considered the effects of land use and riparian management on coarse sediment supply and theconsequent impacts on river channel morphology and ecological habitats in the River Avon, Devon. This work incorporated channel survey techniques including Ground based LiDAR, Total Station and dGPS, combined with monitoring of bed load sediment movement, bed and bank sheer strength, turbidity and riparian soil moisture flood responses.

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