Biogeochemical cycling and pollutant dynamics
Research into the mobility, transport, fate and impact of macronutrients and trace elements within the Earth system, with a particular emphasis on carbon, nitrogen and heavy metals.
Who we are
Tim Allott (Group: EPRG)
Tim’s work looks at the hydrological response of upland peat to erosion and subsequent restoration efforts, in order to better understand the carbon dynamics of these landscapes.
Gareth Clay (Group: EPRG)
Gareth’s work looks at one of the fundamental controls on movement of CO2 between the atmosphere and the biosphere – the oxidative ratio (OR). The OR plays an important role in the apportionment of CO2 between the atmosphere, biosphere and oceans. Recent work has looked at OR in UK peats and southern African soils.
Laura Edwards (Group: EPRG)
Laura’s research in the area of biogeochemical cycling relates to carbon cycling in sea ice environments and impacts on the ocean. In 2010 she took part in the Catlin Arctic Survey fieldwork expedition focussed on carbon cycling and ocean acidification in the Canadian High Arctic during the winter-spring transition.
Martin Evans (Group: EPRG)
Martin works on the interaction between physical change in peatland systems (morphological and water table changes associated with erosion and restoration) and biogeochemical cycling, particularly of carbon and nitrogen.
Claire Goulsbra (Group: EPRG)
Claire's research in this area focuses on the controls on the transformation of particulate organic carbon into dissolved and gaseous forms. Claire is particularly interested in modelling gaseous carbon flux, with a focus on examining the temporal dynamics of such fluxes over the course of the diurnal cycle.
Sarah Lindley (Group: EPRG)
Sarah has interests in urban climate adaptation; urban ecosystem services, urban air quality; geospatial analysis of human-environment interactions impacting on human health and wellbeing; and the assessment of spatial patterns of risk and vulnerability. She has conducted NERC-funded research into the spatial patterns of ultrafine particles in urban environments and NO2 and PM10 exposure assessment through the EU ESCAPE project.
James Rothwell (Group: EPRG)
James’ research is centred upon investigating the processes that control the enrichment and cycling of pollutants in catchment systems. This work involves investigations into metal mobilization in peatlands, the impacts of nitrogen deposition in forest ecosystems, and the fate of pollutants in urban environments.
Emma Shuttleworth (Group: EPRG)
Emma uses a range of innovative field and modelling techniques to examine heavy metal storage and release in wet organic systems. She also investigates the efficacy of peatland restoration in reducing particulate carbon export from eroding catchments.
Abi Stone (Groups: QEG, EPRG)
Abi investigates dryland hydrogeology in the unsaturated zone using sand-based sediments. These are useful archives for reconstructing paleomoisture histories (hydrostratigraphies) but also record past fluctuations of nitrate in the sediment. She is investigating the reasons for spatially-patchy high nitrate concentrations in these desert sediments and the implications for groundwater quality.
Current research projects
- Oxidative ratio of Scandinavian peatlands (Royal Geographical Society Peter Fleming Award). PI: Gareth Clay, Fred Worrall (Durham)
- Nitrate in unsaturated zone dune sands of the Kalahari above the Stampriet Basin: PI: Abi Stone, Mike Edmunds (Oxford)
- Arsenic bio-methylation and detoxification in boreal peatlands. PI James Rothwell and Christian Mikutta (ETH Zurich)
- Tackling urban diffuse pollution using green infrastructure. EA and UU. Co-PI James Rothwell, Katherine Causer (EA), Steve Mangan and Matt Ryan (Salford City Council / Urban Vision), Tony Hothersall and Co-PI Pete Springer (Red Rose Forest)
- Examining the diurnal controls on gaseous carbon flux from peatland systems. Claire Goulsbra
- Catlin Arctic Survey 2010. Laura Edwards
- Carbon flux from restored peatlands in water supply catchments. (United Utilities, National Trust and Moors for the Future) Martin Evans, Tim Allott, Andrew Stimson
- Fluvial organic nitrogen losses from restored peatlands. Martin Evans, James Rothwell, Donald Edokpa
- Cycling of carbon in fluvial systems (DEFRA) Martin Evans, Tim Allott, Claire Goulsbra
- ESCAPE – European Study of Cohorts for Air Pollution Effects. Sarah Lindley
- Assessment of heavy metal storage in wet organic soils and sediments using field portable XRF. Emma Shuttleworth, James Rothwell, Martin Evans, Simon Hutchinson (Salford)
- Investigating the controls on the fluvial export of sediment associated lead and particulate carbon from eroding peatlands – Emma Shuttleworth, Martin Evans, James Rothwell