Dr Chris Evans
My research spans a range of biogeochemical issues, including terrestrial and freshwater carbon and nitrogen cycling, greenhouse gas budgets, water quality, and linkages between biogeochemistry and biodiversity in semi-natural ecosystems. I have particular interests in the interactions between different environmental drivers (e.g. climate, atmospheric deposition, land-management) and different biogeochemical cycles (e.g. C, N, S) in semi-natural ecosystems
My research combines field-based experiments with collection and analysis of long-term and large-scale data, and the development and application of process-based models. Research activities have included detecting and attributing long-term increases in surface water dissolved organic carbon (DOC); improving understanding of climate impacts on soil and water quality; determining the effects of sulphur and nitrogen deposition on terrestrial and freshwater biogeochemistry; and improving knowledge of peatland management effects on carbon and greenhouse gas fluxes. Outside the UK I have contributed to various published international assessments, and am currently involved in research projects in Borneo and Svalbard.
In recent years I have led the development of a major peatland research platform in the Conwy catchment, one of four CEH Carbon Catchments, which also forms a part of the Conwy Source to Sea observatory, and secured external income in the region of £2 million to support embedded field experiments, modelling and policy-oriented projects.
I have led the Defra Critical Loads and Dynamic Modelling consortium since 2004, which supports UK and European policy in relation to atmospheric impacts on terrestrial and aquatic ecosystems, and either led or been involved in projects for NERC, Defra, JNCC, EU, Welsh Assembly Government, EA, CCW, the Scottish Government and utility companies. I recently contributed to the National Ecosystem Assessment and Defra Review of Transboundary Air Pollution, and am currently participating in an IPCC expert group tasked with developing new guidance on greenhouse gas emissions from wetlands.
I am a member of the CEH Bangor Senior Management Team with responsibility for section financial and staff management, line manage 5 CEH staff members, and currently supervise 5 PhD students and 2 postdocs. I have published over 75 papers in peer reviewed journals including Nature, Global Change Biology, Environmental Science and Technology and Geophysical Research Letters, and have been a member of the editorial board of Biogeochemistry since 2008.
See also the NERC Open Research Archive.
Evans, C.D., Monteith, D.T., Fowler, D., Cape, J.N., Brayshaw, S. (2011). Hydrochloric acid: An overlooked driver of environmental change. Environmental Science and Technology, dx.doi.org/10.1021/es103574u.
McGovern, S., Evans, C.D., Dennis, P., Walmsley, C., McDonald, M. (2011). Identifying drivers of species compositional change in a semi-natural upland grassland over a 40 year period. Journal of Vegetation Science, doi: 10.1111/j.1654-1103.2011.01256.x
Moldan, F., Hruška, J., Evans, C.D., Hauhs, M. (2011). Experimental simulation of the effects of extreme climatic events on major ions, acidity and dissolved organic carbon leaching from a forested catchment, Gårdsjön, Sweden. Biogeochemistry, doi 10.1007/s10533-010-9567-6
Roberts, T., Hodson, A., Evans, C.D., Holmén, K. Modelling the impacts of a nitrogen pollution event on the biogeochemistry of an Arctic glacier. Annals of Glaciology (accepted).
Billett M.F., Charman, D.J., Clark, J.M., Evans, C.D., Evans, M.G., Ostle, N.J., Worrall, F., Burden, A., Dinsmore, K.J., Jones, T., McNamara, N.P., Parry, L., Rowson, J.G., Rose, R. (2010). Carbon balance of UK peatlands: current state of knowledge and future research challenges. Climate Research, 45, 13-29.
Clark, J.M., Billett, M.F., Coyle, M. Croft, S., Daniels, S., Evans, C.D., Evans, M. Freeman, C., Gallego-Sala, A.V., Heinemeyer, A. House, J.I., Monteith, D.T., Nayak, D., Orr, H.G., Prentice, I.C., Rose, R. Rowson, J. Smith,
Smart, S.M., Henrys, P.A., Scott, W.A., Hall, J.R., Evans, C.D., Crowe, A., Rowe, E.C., Dragosits, U., Page, T., Whyatt, J.D., Sowerby, A., Clark, J.M. (2010). Impacts of pollution and climate change on ombrotrophic Sphagnum species in the United Kingdom; analysis of uncertainties in two empirical niche models. Climate Research, 45, 163-177.
Smith, J., Gottschalk, P.,Bellarby, J., Chapman, S., Lilly, A. Towers, W., Bell, J., Coleman, K., Nayak, D., Richards, M., Hillier, J., Flynn, H., Wattenbach, M., Aitkenhead, M., Yeluripurti, J., Farmer, J., Milne, R., Thomson, A., Evans, C., Whitmore, A., Falloon, P., Smith, P. (2010). Estimating changes in Scottish soil carbon stocks using ECOSSE. I. Model description and uncertainties. Climate Research, 45, 179-192.
Smith, J., Gottschalk, P.,Bellarby, J., Chapman, S., Lilly, A. Towers, W., Bell, J., Coleman, K., Nayak, D., Richards,
Evans, C.D., Cooper, D.M., Monteith, D.T., Helliwell, R.C., Moldan, F., Hall, J., Rowe, E.C., Cosby, B.J. (2010). Linking monitoring and modelling: can long-term datasets be used more effectively as a basis for large-scale
Toberman, H., Laiho, R., Evans, C.D., Artz, R.E., Fenner, N., Vavrova, P., Freeman, C. (2010). Long-term drainage for forestry inhibits extracellular phenol oxidase activity in Finnish boreal mire peat. European Journal of