Professor Chris Freeman

Emeritus Professor

  1. Published

    Effects of Climate Change on Peatland Reservoirs: A DOC Perspective

    Fenner, N., Meadham, J., Jones, T., Hayes, F. & Freeman, C., Jul 2021, In: Global Biogeochemical Cycles. 35, 7, e2021GB006992.

    Research output: Contribution to journalArticlepeer-review

  2. 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

  3. 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

  4. Published

    Evaluation of algal bloom mitigation and nutrient removal in floating constructed wetlands with different macrophyte species

    Fenner, N., West, M., Gough, R. & Freeman, C., Nov 2017, In: Ecological Engineering. 108, Part B, p. 581-588

    Research output: Contribution to journalArticlepeer-review

  5. Published

    Woody litter protects peat carbon stocks during drought

    Fenner, N. & Freeman, C., 16 Mar 2020, In: Nature Climate Change. 10, 4, p. 363-369

    Research output: Contribution to journalArticlepeer-review

  6. 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

  7. 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

  8. Published

    Peatland geoengineering: an alternative approach to terrestrial carbon sequestration

    Freeman, C., Fenner, N. & Shirsat, A. H., 13 Sept 2012, In: Philosophical Transactions of the Royal Society A. 370, 1974, p. 4404-4421

    Research output: Contribution to journalArticlepeer-review

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. Published

    Decomposition as a regulator of carbon accretion in mangroves: a review

    Friesen, S., Dunn, C. & Freeman, C., Apr 2018, In: Ecological Engineering. 114, p. 173-178

    Research output: Contribution to journalArticlepeer-review

  15. Published

    High intensity fire accelerates accumulation of a stable carbon pool in permafrost peatlands under climate warming

    Gao, C., Wang, G., Cong, J., Freeman, C., Jiang, M. & Qin, L., 15 Jun 2023, In: Catena. 227, 107108.

    Research output: Contribution to journalArticlepeer-review

  16. Published

    Dissolved organic carbon and trihalomethane precursor removal at a UK upland water treatment works

    Gough, R. S., Holliman, P. J., Willis, N. & Freeman, C., 15 Jan 2014, In: Science of the Total Environment. 468-469, p. 228-239

    Research output: Contribution to journalArticlepeer-review

  17. Published

    Influence of habitat on the quantity and composition of leachable carbon in the O2 horizon: Potential iplications for potable water treatment

    Gough, R. S., Holliman, P. J., Willis, N., Jones, T. G. & Freeman, C., 27 Nov 2012, In: Lake and Reservoir Management. 28, 4, p. 282-292

    Research output: Contribution to journalArticlepeer-review

  18. Published

    UV-visible absorbance spectroscopy as a proxy for peatland dissolved organic carbon (DOC) quantity and quality: considerations on wavelength and absorbance degradation

    Gough, R. S., Peacock, M., Evans, C. D., Fenner, N., Freeman, C., Gough, R., Jones, T. G. & Lebron, I., 4 Apr 2014, In: Environmental Science: Processes and Impacts. 50, 6, p. 1445-1461

    Research output: Contribution to journalArticlepeer-review

  19. Published

    Dissolved organic carbon and trihalomethane formation potential removal during coagulation of a typical UK upland water with alum, PAX-18 and PIX-322

    Gough, R. S., Holliman, P. J., Heard, T. R. & Freeman, C., 1 Dec 2014, In: Journal of Water Supply: Research and Technology - AQUA. 63, 8, p. 650-660

    Research output: Contribution to journalArticlepeer-review

  20. Published

    The impact of climate change on the treatability of dissolved organic matter (DOM) in upland water supplies: a UK perspective

    Gough, R. S., Ritson, J. P., Graham, N. J., Templeton, M. R., Clark, J. M., Gough, R. & Freeman, C., 10 Jan 2014, In: Science of the Total Environment. 473-474, p. 714-730

    Research output: Contribution to journalArticlepeer-review

  21. Published

    Influence of water table depth on pore water chemistry and Trihalomethane Formation potential in peatlands

    Gough, R. S., Gough, R., Holliman, P. J., Fenner, N., Peacock, M. & Freeman, C., 1 Feb 2016, In: Water Environment Research. 88, 2, p. 107-117

    Research output: Contribution to journalArticlepeer-review

  22. Published

    Characterisation of algogenic organic matter during an algal bloom and its implications for trihalomethane formation

    Gough, R. S., Gough, R., Holliman, P. J., Cooke, G. M. & Freeman, C., 1 Sept 2015, In: Sustainability of Water Quality and Ecology. 6, September, p. 11-19

    Research output: Contribution to journalArticlepeer-review

  23. Published

    Tracing dissolved organic carbon and trihalomethane formation potential between source water and finished drinking water at a lowland and an upland UK catchment

    Gough, R. S., Brooks, E., Freeman, C., Gough, R. & Holliman, P. J., 15 Aug 2015, In: Science of the Total Environment. 537, p. 203-212

    Research output: Contribution to journalArticlepeer-review

  24. Published

    Relationships between reservoir water quality and catchment habitat type

    Gough, R., Cohen, Y., Fenner, N., Cannon, J. & Freeman, C., 1 Jan 2016, In: International Journal of Environmental Technology and Management. 19, 1, p. 16-39

    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

    Temporal variations in dissolved organic carbon concentrations in upland and lowland lakes in North Wales

    Hughes, D. D., Holliman, P. J., Jones, T. & Freeman, C., 1 Jun 2013, In: Water and Environment Journal. 27, 2, p. 275-283

    Research output: Contribution to journalArticlepeer-review

  27. Published

    Assessment of potential climate change impacts on peatland dissolved organic carbon release and drinking water treatment from laboratory experiments

    Hughes, D. D., Tang, R., Clark, J. M., Bond, T., Graham, N., Hughes, D. & Freeman, C., 1 Feb 2013, In: Environmental Pollution. 173, p. 270-277

    Research output: Contribution to journalArticlepeer-review

  28. Published

    Rapid, Semi-Automated Fractionation of Freshwater Dissolved Organic Carbon Using DAX 8 (XAD 8) and XAD 4 Resins in Tandem

    Hughes, D., Holliman, P., Jones, T., Jones, T., Butler, A. J. & Freeman, C., 22 Nov 2016, In: Natural Science. 8, 11, p. 487-498

    Research output: Contribution to journalArticlepeer-review

  29. 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

  30. Published

    Waste Water Treatment

    Jones, D., Freeman, C. & Sánchez-Rodríguez, A. R., 1 Jan 2017, Encyclopedia of Applied Plant Sciences. Thomas, B., Murray, B. G. & Murphy, D. J. (eds.). 2 ed. Elsevier, Vol. 3. p. 352 10 p.

    Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

  31. 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

  32. Published

    An experimental use of floating treatment wetlands (FTWs) to reduce phytoplankton growth in freshwaters

    Jones, T., Willis, N., Gough, R. & Freeman, C., Feb 2017, In: Ecological Engineering. 99, p. 316-323

    Research output: Contribution to journalArticlepeer-review

  33. Published

    The greenhouse gas (GHG) emissions associated with aquatic carbon removal during drinking water treatment

    Jones, T., Evans, C. D. & Freeman, C., 1 Jul 2016, In: Aquatic Sciences. 78, 3, p. 561-572

    Research output: Contribution to journalArticlepeer-review

  34. Published

    Transformations in DOC along a source to sea continuum; impacts of photo-degradation, biological processes and mixing

    Jones, T. G., Evans, C. D., Jones, D., Hill, P. W. & Freeman, C., 1 Jul 2016, In: Aquatic Sciences. 78, 3, p. 433-446

    Research output: Contribution to journalArticlepeer-review

  35. 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

  36. 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

  37. 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

  38. 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

  39. 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

  40. Published

    Microbes, Environmental Change and the Global Carbon Cycle

    Kang, H. & Freeman, C., 1 Mar 2016, Climate Change and Microbial Ecology: Current Research and Future Trends. Marxsen, J. (ed.). Caister Academic Press, p. 153-166

    Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

  41. Published

    Biologically driven DOC release from peatlands during recovery from acidification

    Kang, H., Kwon, M. J., Kim, S., Lee, S., Jones, T. G., Johncock, A. C., Haraguchi, A. & Freeman, C., 18 Sept 2018, In: Nature Communications. 9, 3807.

    Research output: Contribution to journalArticlepeer-review

  42. Published

    Water table fluctuation in peatlands facilitates fungal proliferation, impedes Sphagnum growth and accelerates decomposition

    Kim, J., Rochefort, L., Hugron, S., Alqulaiti, Z., Dunn, C., Pouliot, R., Jones, T., Freeman, C. & Kang, H., 22 Apr 2021, In: Frontiers Earth Science. 8, 579329.

    Research output: Contribution to journalArticlepeer-review

  43. Published

    Functional and structural responses of bacterial and methanogen communities to 3-year warming incubation in different depths of peat mire

    Kim, S. Y., Freeman, C., Fenner, N. & Kang, H., 1 Jun 2012, In: Applied Soil Ecology. 57, p. 23-30

    Research output: Contribution to journalArticlepeer-review

  44. 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

  45. Published

    Changing thermal sensitivity of bacterial communities and soil enzymes in a bog peat in spring, summer and autumn

    Kim, S-Y., Zhou, X., Freeman, C. & Kang, H., 1 May 2022, In: Applied Soil Ecology. 173, 104382.

    Research output: Contribution to journalArticlepeer-review

  46. Published

    Elevated CO2 and high salinity enhance the abundance of sulfate reducers in a salt marsh ecosystem

    Kim, S-Y., Freeman, C., Lukac, M., Lee, S-H., Kim, S. D. & Kang, H., Mar 2020, In: Applied Soil Ecology. 147, 103386.

    Research output: Contribution to journalArticlepeer-review

  47. Published

    Attenuation of Methane Oxidation by Nitrogen Availability in Arctic Tundra Soils

    Lee, J., Yun, J., Yang, Y., Jung, J. Y., Lee, Y. K., Yuan, J., Ding, W., Freeman, C. & Kang, H., 14 Feb 2023, In: Environmental Science and Technology. 57, 6, p. 2647-2659 13 p.

    Research output: Contribution to journalArticlepeer-review

  48. 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

  49. Published

    Substrate sources regulate spatial variation of metabolically active methanogens from two contrasting freshwater wetlands

    Lin, Y. X., Liu, D. Y., Ding, W. X., Kang, H. J., Freeman, C., Yuan, J. J. & Xiang, J., 19 Aug 2015, In: Applied Microbiology and Biotechnology. 99, 24, p. 10779-10791

    Research output: Contribution to journalArticlepeer-review

  50. Published

    Divergent responses of wetland methane emissions to elevated atmospheric CO2 dependent on water table

    Lin, Y., Yuan, J., Liu, D., Kang, H., Freeman, C., Hu, H-W., Ye, G. & Ding, W., 15 Oct 2021, In: Water Research. 205, 117682.

    Research output: Contribution to journalArticlepeer-review