Staff Profile:Dr Joanna Clark

Name:

Dr Joanna Clark

Job Title:

Lecturer in Soil Carbon

Responsibilities:

• Earth System Science Research Group Seminars
• Teaching: Carbon & Global Change; Sustainable Land Management; Quantitative Analysis of Environmental Data; Environmental Science Field Class; Dissertation Supervision

Areas of Interest:

Joanna's main interests are focused on understanding the interactions between carbon and other biogeochemical cycles in terrestrial ecosystems, particularly the sensitivity of carbon release from soils to climate change in relation to other drivers of environmental change. Recent research has included:

• Temperature sensitivity of carbon fluxes from organic soils
• Modelling climate change impacts on peatlands
• Drivers of increased dissolved organic carbon (DOC) release from soils to surface waters
• Impact of drought on peatland biogeochemistry

PhD supervision:

Joanna currently supervises three PhD students:

• Katarzyna Sawicka, 'Multi-scale drivers of DOC trends in surface waters'. Jointly funded by University of Reading Faculty of Science Studentship, Centre for Ecology and Hydrology and Forest Research.
• Jun Cang, 'Soils and organic pollutants'.
• Bassey Udo, 'Influence of oil on greehouse gas emissions from soils'.

Joanna is keen to discuss PhD opportunities with students interested in carbon cycling in organic soils, dissolved organic carbon dynamics, climate change mitigation potential of biochar, and modelling climate change impacts on biogeochemical processes.

Applications are invited for the following competition funded projects:

Research groups / Centres:

• Earth Systems Science Research Group
• Soil Research Centre
• Walker Institute

Key Facts:

Joanna joined the department in October 2010. She completed her PhD on dissolved organic carbon dynamics in blanket peat in 2005 at the University of Leeds in collaboration with CEH Merlewood/Lancaster (NERC-CASE). She then worked as a Research Fellow on three projects based at Imperial College, Bangor University and the University of Leeds:

• Sensitivity of peatland carbon cycling to climate change (Grantham Institute for Climate Change, Imperial College)
• Vulnerability of upland peatland ecosystem services to climate change (Environment Agency and NERC-QUEST)
• Influence of recovery from acidification on the dynamics of dissolved organic carbon in organic soils (NERC)

Joanna was a Guest Editor for a special issue of Climate Research on Climate Change and the British Uplands.

Publications:

Y

Jump to: 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005

Number of items: 22.

2011

• Clark, J. M., van der Heijden, G. M. F., Palmer, S. M., Chapman, P. J. and Bottrell, S. H. (2011) Variation in the sensitivity of DOC release between different organic soils following H2SO4 and sea-salt additions. European Journal of Soil Science, 62 (2). pp. 267-284. ISSN 1351-0754 doi: 10.1111/j.1365-2389.2010.01344.x
• Clark, J. M., Heinemeyer, A., Martin, P. and Bottrell, S. H. (2011) Processes controlling DOC in pore water during simulated drought cycles in six different UK peats. Biogeochemistry. ISSN 1573-515X doi: 10.1007/s10533-011-9624-9 (In Press)

2010

• Clark, J. M., Gallego-Sala, A. V., Allott, T. E. H., Chapman , S. J., Farewell, T., Freeman, C., House, J. I., Orr, H. G., Prentice, I. C. and Smith, P. (2010) Assessing the vulnerability of blanket peat to climate change using an ensemble of statistical bioclimatic envelope models. Climate Research, 45. pp. 131-150. ISSN 0936-577X doi: 10.3354/cr00929
• Clark, J. M., Orr, H. G., Freer, J., House, J. I., Smith, P. and Freeman, C. (2010) Assessment of projected changes in upland environments using simple climatic indices. Climate Research, 45. pp. 87-104. ISSN 0936-577X doi: 10.3354/cr00923
• Gallego-Sala, A. V., Clark, J. M., House, J. I., Orr, H. G., Prentice, I. C., Smith, P., Farewell, T. and Chapman, S. J. (2010) Bioclimatic envelope model of climate change impacts on blanket peatland distribution in Great Britain. Climate Research, 45. pp. 151-162. ISSN 0936-577X doi: 10.3354/cr00911
• 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. and Rose, R. (2010) Carbon balance of UK peatlands: current state of knowledge and future research challenges. Climate Research, 45. pp. 13-29. ISSN 0936-577X doi: 10.3354/cr00903
• 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. and Clark, J. M. (2010) Impacts of pollution and climate change on ombrotrophic Sphagnum species in the UK: analysis of uncertainties in two empirical niche models. Climate Research, 45. pp. 163-177. ISSN 0936-577X doi: 10.3354/cr00969
• 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, J. U., Smith, P., Tun, Y. M., Vanguelova, E., Wetterhall, F. and Worrall, F. (2010) Model inter-comparison between statistical and dynamic model assessments of the long-term stability of blanket peat in Great Britain (1940-2099). Climate Research, 45. pp. 227-248. ISSN 0936-577X doi: 10.3354/cr00974
• Clark, J. M., Bottrell, S. H., Evans, C. D., Monteith, D. T., Bartlett, R., Rose, R., Newton, R. J. and Chapman, P. J. (2010) The importance of the relationship between scale and process in understanding long-term DOC dynamics. Science of the Total Environment, 408 (13). pp. 2768-2775. ISSN 0048-9697 doi: 10.1016/j.scitotenv.2010.02.046
• House, J. I., Orr, H. G., Clark, J. M., Gallego-Sala, A. V., Freeman, C., Prentice, I. C. and Smith, P. (2010) Climate change and the British Uplands: evidence for decision-making. Climate Research, 45. pp. 3-12. ISSN 0936-577X doi: 10.3354/cr00982

2009

• Clark, J. M., Ashley, D., Wagner, M., Chapman, P. J., Lane, S. N., Evans, C. D. and Heathwaite, A. L. (2009) Increased temperature sensitivity of net DOC production from ombrotrophic peat due to water table draw-down. Global Change Biology, 15 (4). pp. 794-807. ISSN 1365-2486 doi: 10.1111/j.1365-2486.2008.01683.x

2008

• Evans, C. D., Monteith, D. T., Reynolds, B. and Clark, J. M. (2008) Buffering of recovery from acidification by organic acids. Science of the Total Environment, 404 (2-3). pp. 316-325. ISSN 0048-9697 doi: 10.1016/j.scitotenv.2007.11.003
• Clark, J. M., Lane, S. N., Chapman, P. J. and Adamson, J. K. (2008) Link between DOC in near surface peat and stream water in an upland catchment. Science of the Total Environment, 404 (2-3). pp. 308-315. ISSN 0048-9697 doi: 10.1016/j.scitotenv.2007.11.002
• Chapman, P. J., Clark, J. M., Reynolds, B. and Adamson, J. K. (2008) The influence of organic acids in relation to acid deposition in controlling the acidity of soil and stream waters on a seasonal basis. Environmental Pollution, 151 (1). pp. 110-120. ISSN 0269-7491 doi: 10.1016/j.envpol.2007.03.001
• Clark, J. M., Evans, C. D., Bottrell, S., Monteith, D. T., Rose, R., Ratcliffe, M. and Chapman, P. J. (2008) Have increased dissolved organic carbon (DOC) losses from UK peat and organo-mineral soils been driven by the decline in acid rain? In: After Wise Use – The Future of Peatlands, Proceedings of the 13th International Peat Congress (Volume 1), 8-13 June 2008, Tullamore, Ireland, pp. 576-579.
• Clark, J. M., Heinemeyer, A., Martin, P. and Bottrell, S. (2008) Linking carbon and sulphur cycling during simulated drought cycles in peat from six sites across the UK. In: After Wise Use – The Future of Peatlands, Proceedings of the 13th International Peat Congress (Volume 1), 8-13 June 2008, Tullamore, Ireland, pp. 572-575.

2007

• Clark, J. M., Lane, S., Chapman , P. and Adamson, J. (2007) Export of dissolved organic carbon from an upland peatland during storm events: implications for flux estimates. Journal of Hydrology, 347 (3-4). pp. 438-447. ISSN 0022-1694 doi: 10.1016/j.jhydrol.2007.09.030
• Bottrell, S.H., Mortimer, R.J., Spence, M., Krom, M.D., Clark, J. M. and Chapman, P.J. (2007) Insights into redox cycling of sulfur and iron in peatlands using high-resolution diffusive equilibrium thin film (DET) gel probe sampling. Chemical Geology, 244 (3-4). pp. 409-420. ISSN 0009-2541 doi: 10.1016/j.chemgeo.2007.06.028

2006

• Evans, C.D., Chapman, P.J., Clark, J. M., Monteith, D.T. and Cresser, M.S. (2006) Alternative explanations for rising dissolved organic carbon export from organic soils. Global Change Biology, 12 (11). pp. 2044-2053. ISSN 1365-2486 doi: 10.1111/j.1365-2486.2006.01241.x
• Clark, J. M., Chapman, P.J., Heathwaite, A.L. and Adamson, J.K. (2006) Suppression of dissolved organic carbon by sulfate induced acidification during simulated droughts. Environmental Science & Technology, 40 (6). pp. 1776-1783. ISSN 0013-936X doi: 10.1021/es051488c

2005

• Clark, J. M., Chapman, P. J., Adamson, J. K. and Lane, S. N. (2005) Influence of drought-induced acidification on the mobility of dissolved organic carbon in peat soils. Global Change Biology, 11 (5). pp. 791-809. ISSN 1365-2486 doi: 10.1111/j.1365-2486.2005.00937.x
• Chapman, P. J., Clark, J. M., Heathwaite, A. L., Adamson, J. K. and Lane, S. N. (2005) Sulphate controls on dissolved organic carbon dynamics in blanket peat: linking field and laboratory evidence. In: Heathwaite, L., Webb, B., Rosenberry, D., Weaver, D. and Hayashi, M. (eds.) Dynamics and biogeochemistry of river corridors and wetlands. IAHS Press, Wallingford, pp. 3-9. ISBN 1901502031

This list was generated on Sat May 26 17:49:50 2012 BST.

Qualifications:

BSc (Durham); MSc (London); PhD (Leeds)