Professor Chris Freeman

Emeritus Professor

  1. 1995
  2. Published

    The use of fluorogenic substrates for measuring enzyme activity in peatlands

    Freeman, C., Liska, G., Ostle, N. J. & Lock, M. A., 1 Aug 1995, In: Plant and Soil. 175, 1, p. 147-152

    Research output: Contribution to journalArticlepeer-review

  3. 2000
  4. Published

    Carbon supply and the regulation of emzyme activity in constructed wetlands.

    Shackle, V. J., Freeman, C. & Reynolds, B., 1 Nov 2000, In: Soil Biology and Biochemistry. 32, 13, p. 1935-1940

    Research output: Contribution to journalArticlepeer-review

  5. 2001
  6. Published

    An enzymatic 'latch' on a global carbon store;- a shortage of oxygen locks up carbon in peatlands by restraining a single enzyme.

    Freeman, C., Ostle, N. J. & Kang, H., 11 Jan 2001, In: Nature. 409, 6817, p. 149

    Research output: Contribution to journalArticlepeer-review

  7. Published

    Molecular weight spectra of dissolved organic carbon in a rewetted Welsh peatland and possible implications for water quality.

    Fenner, N., Freeman, C., Hughes, S. & Reynolds, B., 1 Jun 2001, In: Soil Use and Management. 17, 2, p. 106-112

    Research output: Contribution to journalArticlepeer-review

  8. Published

    Export of organic carbon from peat soils.

    Freeman, C., Evans, C. D., Monteith, D. T., Reynolds, B. & Fenner, N., 23 Aug 2001, In: Nature. 412, 6849, p. 785

    Research output: Contribution to journalArticlepeer-review

  9. Published

    Effects of elevated CO2 on fen peat biogeochemistry.

    Kang, H., Freeman, C. & Ashendon, T. W., 12 Nov 2001, In: Science of the Total Environment. 279, 1-3, p. 45-50

    Research output: Contribution to journalArticlepeer-review

  10. 2002
  11. Published

    Contrasted effects of simulated drought on the production and oxidation of methane in a mid-Wales wetland.

    Freeman, C., Nevison, G. B., Kang, H., Hughes, S., Reynolds, B. & Hudson, J. A., 1 Jan 2002, In: Soil Biology and Biochemistry. 34, 1, p. 61-67

    Research output: Contribution to journalArticlepeer-review

  12. Published

    Climate change - Terrestrial export of organic carbon - Reply

    Evans, C. D., Freeman, C., Monteith, D. T., Reynolds, B. & Fenner, N., 21 Feb 2002, In: Nature. 415, 6874, p. 862

    Research output: Contribution to journalArticlepeer-review

  13. Published

    The influence of hydrochemistry on methane emissions from two contrasting northern wetlands.

    Kang, H. & Freeman, C., 1 Nov 2002, In: Water Air and Soil Pollution. 141, 1-4, p. 263-272

    Research output: Contribution to journalArticlepeer-review

  14. 2003
  15. Published

    Waste water treatment.

    Jones, D. L., Freeman, C., Thomas, B. (ed.), Murphy, D. (ed.) & Murray, B. (ed.), 1 Jan 2003, Encyclopaedia of applied plant science. 2003 ed. Academic Press, p. 772-781

    Research output: Chapter in Book/Report/Conference proceedingChapter

  16. 2004
  17. Published

    Peatland carbon efflux partitioning reveals that Sphagnum photosynthate contributes to the DOC pool

    Fenner, N., Ostle, N., Freeman, C., Sleep, D. & Reynolds, B., Feb 2004, In: Plant and Soil. 259, 1-2, p. 345-354

    Research output: Contribution to journalArticlepeer-review

  18. Published

    Export of dissolved organic carbon from peatlands under elevated carbon dioxide levels.

    Freeman, C., Fenner, N., Ostle, N. J., Kang, H., Dowrick, D. J., Reynolds, B., Lock, M. A., Sleep, D., Hughes, S. & Hudson, J., 8 Jul 2004, In: Nature. 430, 6996, p. 195-198

    Research output: Contribution to journalArticlepeer-review

  19. Published

    A regulatory role for phenol oxidase during decomposition in peatlands.

    Freeman, C., Ostle, N., Fenner, N. & Kang, H., 1 Oct 2004, In: Soil Biology and Biochemistry. 36, 10, p. 1663-1667

    Research output: Contribution to journalArticlepeer-review

  20. Published

    Effects of elevated atmospheric CO2 concentrations on soil microorganisms.

    Freeman, C., Kim, S. Y., Lee, S. H. & Kang, H., 1 Dec 2004, In: Journal of Microbiology. 42, 4, p. 267-277

    Research output: Contribution to journalArticlepeer-review

  21. 2005
  22. Published

    N-Acetylglucosaminidase activities in wetlands: a global survey

    Kang, H. J., Freeman, C., Park, S. S. & Chun, J., 1 Jan 2005, In: Hydrobiologia. 532, p. 103-110

    Research output: Contribution to journalArticlepeer-review

  23. Published

    Shifts of soil enzyme activities in wetlands exposed to elevated CO2

    Kang, H., Kim, S. Y., Fenner, N. & Freeman, C., 20 Jan 2005, In: Science of the Total Environment. 337, 1-3, p. 207-212

    Research output: Contribution to journalArticlepeer-review

  24. Published

    Hydrological effects on the diversity of phenolic degrading bacteria in a peatland: implications for carbon cycling.

    Fenner, N., Freeman, C. & Reynolds, B., 1 Jul 2005, In: Soil Biology and Biochemistry. 37, 7, p. 1277-1287

    Research output: Contribution to journalArticlepeer-review

  25. Published

    Nutrient limitation and enzyme activities during litter decomposition of nine wetland species in relation to litter N : P ratios

    Gusewell, S. & Freeman, C., 1 Aug 2005, In: Functional Ecology. 19, 4, p. 582-593

    Research output: Contribution to journalArticlepeer-review

  26. Published

    Microbial community changes in heathland soil communities along a geographical gradient: interaction with climate change manipulations.

    Sowerby, A., Emmett, B., Beier, C., Tietema, A., Penuelas, J., Estiatre, M., Van Meeteren, M. J., Hughes, S. & Freeman, C., 1 Oct 2005, In: Soil Biology and Biochemistry. 37, 10, p. 1805-1813

    Research output: Contribution to journalArticlepeer-review

  27. Published

    Observations of a seasonally shifting thermal optimum in peatland carbon-cycling processes; implications for the global carbon cycle and soil enzyme methodologies.

    Fenner, N., Freeman, C. & Reynolds, B., 1 Oct 2005, In: Soil Biology and Biochemistry. 37, 10, p. 1814-1821

    Research output: Contribution to journalArticlepeer-review

  28. 2006
  29. Published

    DOC export to upland waters: old or new carbon?

    Evans, C., Cork, L., Freeman, C., Thomas, D. N. & Reynolds, B., 1 Jan 2006.

    Research output: Contribution to conferencePaper

  30. Published

    Storm Induced Dissolved Organic Matter Release.

    Cork, L., Evans, C., Freeman, C., Thomas, D. N. & Reynolds, B., 1 Jan 2006.

    Research output: Contribution to conferencePaper

  31. Published

    Storm Induced Dissolved Organic Matter Release.

    Cork, L., Evans, C., Freeman, C., Thomas, D. N. & Reynolds, B., 1 Jan 2006.

    Research output: Contribution to conferencePaper

  32. Published

    Exogenous enzyme supplements to promote treatment efficiency in constructed wetlands.

    Shackle, V., Freeman, C. & Reynolds, B., 15 May 2006, In: Science of the Total Environment. 361, 1-3, p. 18-24

    Research output: Contribution to journalArticlepeer-review

  33. Published

    Sulphate reduction and the suppression of peatland methane emissions following summer drought

    Dowrick, D. J., Freeman, C., Lock, M. A. & Reynolds, B., 1 Jun 2006, In: Geoderma. 132, 3-4, p. 384-390

    Research output: Contribution to journalArticlepeer-review

  34. Published

    A novel approach to studying the effects of temperature on soil biogeochemistry using a thermal gradient bar

    Fenner, N., Dowrick, D. J., Lock, M. A., Rafarel, C. R. & Freeman, C., 1 Sept 2006, In: Soil Use and Management. 22, 3, p. 267-273

    Research output: Contribution to journalArticlepeer-review

  35. Published

    Seasonal variations in decomposition processes in a valley-bottom riparian peatland

    Bonnett, S. A., Ostle, N. & Freeman, C., 1 Nov 2006, In: Science of the Total Environment. 370, 2-3, p. 561-573

    Research output: Contribution to journalArticlepeer-review

  36. Published

    Atmospheric nitrogen deposition promotes carbon loss from peat bogs

    Bragazza, L., Freeman, C., Jones, T., Rydin, H., Limpens, J., Fenner, N., Ellis, T., Gerdol, R., Hajek, T., Iacumin, P., Kutnar, L., Tahvanainen, T. & Toberman, H., 19 Dec 2006, In: Proceedings of the National Academy of Sciences of the USA. 103, 51, p. 19386-19398

    Research output: Contribution to journalArticlepeer-review

  37. 2007
  38. Published

    DOC export and carbon loss from UK upland soils: similarities and differences between peats and organo-mineral soils.

    Evans, C., Freeman, C., Billett, M., Clark, J. M., Tobermann, H., Chapman, P., Cork, L. G., Reynolds, B. & Thomas, D. N., 1 Jan 2007.

    Research output: Contribution to conferencePaper

  39. Published

    Interactions between elevated CO2 and warming could amplify DOC exports from peatland catchments.

    Fenner, N., Freeman, C., Lock, M. A., Harmens, H., Reynolds, B. & Sparks, T., 29 Mar 2007, In: Environmental Science and Technology. 41, 9, p. 3146-3152

    Research output: Contribution to journalArticlepeer-review

  40. Published

    Evidence against recent climate-induced destabilisation of soil carbon from C-14 analysis of riverine dissolved organic matter

    Evans, C. D., Freeman, C., Cork, L. G., Thomas, D. N., Reynolds, B., Billett, M. F., Garnett, M. H. & Norris, D., 13 Apr 2007, In: Geophysical Research Letters. 34, 7, p. L07407

    Research output: Contribution to journalArticlepeer-review

  41. Published

    High nitrogen availability reduces polyphenol content in Sphagnum peat

    Bragazza, L. & Freeman, C., 15 May 2007, In: Science of the Total Environment. 377, 2-3, p. 439-443

    Research output: Contribution to journalArticlepeer-review

  42. Published

    Elevated CO2 effects on peatland plant community carbon dynamics and DOC production.

    Fenner, N., Ostle, N. J., McNamara, N., Sparks, T., Harmens, H., Reynolds, B. & Freeman, C., 1 Jun 2007, In: Ecosystems. 10, 4, p. 635-647

    Research output: Contribution to journalArticlepeer-review

  43. 2008
  44. Published

    Peatlands and the carbon cycle: from local processes to global implications - a synthesis.

    Limpens, J., Berendse, F., Blodau, C., Canadell, J. G., Freeman, C., Holden, J., Roulet, N., Rydin, H. & Schaepman-Strub, G., 1 Jan 2008, In: Biogeosciences. 5, 5, p. 1475-1491

    Research output: Contribution to journalArticlepeer-review

  45. Published

    Summer drought effects upon soil and litter extracellular phenol oxidase activity and soluble carbon release in an upland Calluna heathland

    Toberman, H., Evans, C., Freeman, C., Fenner, N., White, M., Emmett, B. & Artz, R. R., 1 Jun 2008, In: Soil Biology and Biochemistry. 40, 6, p. 1519-1532

    Research output: Contribution to journalArticlepeer-review

  46. Published

    Microbial contributions to climate change through carbon cycle feedbacks.

    Bardgett, R. D., Freeman, C. & Ostle, N. J., 1 Aug 2008, In: ISME Journal. 2, 8, p. 805-814

    Research output: Contribution to journalArticlepeer-review

  47. Published

    Comparative analysis of soil microbial communities and their responses to the short-term drought in bog, fen, and riparian wetlands

    Kim, S. Y., Lee, S. H., Freeman, C., Fenner, N. & Kang, H., 1 Nov 2008, In: Soil Biology and Biochemistry. 40, 11, p. 2874-2880

    Research output: Contribution to journalArticlepeer-review

  48. Published

    Summer drought decreases soil fungal diversity and associated phenol oxidase activity in upland Calluna heathland soil

    Toberman, H., Freeman, C., Evans, C., Fenner, N. & Artz, R. R., 1 Nov 2008, In: Fems Microbiology Ecology. 66, 2, p. 426-436

    Research output: Contribution to journalArticlepeer-review

  49. Published

    Impeded drainage stimulates extracellular phenol oxidase activity in riparian peat cores.

    Toberman, H., Freeman, C., Artz, R. R., Evans, C. D. & Fenner, N., 1 Dec 2008, In: Soil Use and Management. 24, 4, p. 357-365

    Research output: Contribution to journalArticlepeer-review

  50. 2009
  51. Published

    Hydrological controls on dissolved organic carbon production and release from UK peatlands.

    Fenner, N., Freeman, C., Worrall, F., Baird, A. J. (ed.), Belyea, L. R. (ed.), Xavier Comas, A. S. (ed.) & Slater, L. D. (ed.), 1 Jan 2009, Carbon Cycling in Northern Peatlands. 2009 ed. American Geophysical Union

    Research output: Chapter in Book/Report/Conference proceedingChapter

  52. Published

    Impacts of elevated atmosphere ozone on peatland below-ground DOC characteristics.

    Jones, T. G., Freeman, C., Lloyd, A. & Mills, G., 1 Jun 2009, In: Ecological Engineering. 35, 6, p. 971-977

    Research output: Contribution to journalArticlepeer-review

  53. Published

    The interactive effects of elevated carbon dioxide and water table draw-down on carbon cycling in a Welsh ombrotrophic bog.

    Ellis, T., Hill, P. W., Fenner, N., Williams, G. G., Godbold, D. & Freeman, C., 1 Jun 2009, In: Ecological Engineering. 35, 6, p. 978-986

    Research output: Contribution to journalArticlepeer-review

  54. Published

    Annual variation of temperature sensitivity of soil organic carbon decomposition in North peatlands: implications for thermal responses of carbon cycling to global warming.

    Xiang, W. & Freeman, C., 1 Aug 2009, In: Environmental Geology. 58, 3, p. 499-508

    Research output: Contribution to journalArticlepeer-review

  55. Published

    Soil enzyme analysis for leaf litter decomposition in global wetlands.

    Kang, H. & Freeman, C., 1 Dec 2009, In: Communications in Soil Science and Plant Analysis. 40, 21-22, p. 3323-3334

    Research output: Contribution to journalArticlepeer-review

  56. 2010
  57. Published

    Short-term effect of deep shade and enhanced nitrogen supply on Sphagnum capillofolium morphophysiology.

    Bonnett, S. A., Ostle, N. & Freeman, C., 1 Apr 2010, In: Plant Ecology. 207, 2, p. 347-358

    Research output: Contribution to journalArticlepeer-review

  58. Published

    Species-specific effects of elevated ozone on wetland plants and decomposition processes.

    Williamson, J., Mills, G. & Freeman, C., 1 May 2010, In: Environmental Pollution. 158, 5, p. 1197-1206

    Research output: Contribution to journalArticlepeer-review

  59. 2011
  60. Published

    Peatlands: our greatest source of carbon credits?

    Dunn, C. & Freeman, C., 2011, In: Carbon Management. 2, 3, p. 289-301

    Research output: Contribution to journalArticlepeer-review

  61. Published

    Additional carbon sequestration benefits of grassland diversity restoration.

    De Deyn, G. B., Shiel, R. S., Ostle, N. J., McNamara, N. P., Oakley, S., Young, I., Freeman, C., Fenner, N., Quirk, H. & Bardgett, R. D., 1 Jun 2011, In: Journal of Applied Ecology. 48, 3, p. 600-608

    Research output: Contribution to journalArticlepeer-review

  62. Published

    Litter type affects the activity of aerobic decomposers in a boreal peatland more than site nutrient and water table regimes

    Straková, P., Niemi, R. M., Freeman, C., Peltoniemi, K., Toberman, H., Heiskanen, I., Fritze, H. & Laiho, R., 27 Sept 2011, In: Biogeosciences. 8, 9, p. 2741-2755

    Research output: Contribution to journalArticlepeer-review

  63. Published

    Decomposition ‘hotspots’ in a rewetted peatland: implications for water quality and carbon cycling

    Fenner, N., Williams, R., Toberman, H., Hughes, S., Reynolds, B. & Freeman, C., 1 Oct 2011, In: Hydrobiologia. 674, 1, p. 51-66

    Research output: Contribution to journalArticlepeer-review

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