Professional summary

Research Interests

I am a Senior Research Scientist interested in the trace gas fluxes from various ecosystems, including peatlands and agricultural systems, especially bioenergy crops and the associated land-use change and have worked on projects in the Arctic, Sub-Antarctic and Tropics as well as temperate ecosystems. My main research focuses on measuring and interpreting biosphere-atmosphere-exchange fluxes of trace gases such as greenhouse gases (CO2, N2O, CH4), NO and ozone depleting gases (methyl halides and volatile organic compounds - VOCs) and the cycling of carbon and nitrogen in ecosystems. My work also involves using gas chromatography (GC-ECD/FID/MS), and new technologies such as quantum cascade laser (QCL), cavity ring-down laser and ion chromatography (IC).

Current research focuses on nitrogen use efficiency of rice cropping systems in India and greenhouse gas fluxes from oil palm plantations in Malaysia and Indonesia focusing on sustainability issues and restoration options.

I am the Laboratory Manager for the Gas Chromatography Laboratory, the key facility for trace gas analysis at CEH Edinburgh which involves managing and mentoring junior staff.

Brief CV

2015- present Biogeochemist at Natural Environment Research Council, CEH Edinburgh research station, Bush Estate, Penicuik, EH26 0QB – Band 5.

2009 - 2015 Biogeochemist at Natural Environment Research Council, CEH Edinburgh research station, Bush Estate, Penicuik, EH26 0QB – Band 6.

2007 - 2009 Biogeochemist at Natural Environment Research Council, CEH Edinburgh research station, Bush Estate, Penicuik, EH26 0QB – Band 7.

2003 - 2007 PhD student at the University of Edinburgh.

1998 - 2003 Student at Technical University Braunschweig, Germany.

1997 - 1998 Niedersächsisches Landesamt für Ökologie, Forschungsstelle Küste, Außenstelle Wilhelmshaven, Germany (Lower Saxony Department of Ecology – Marine Ecology), Ecology Internship.


PhD, jointly between Schools of GeoSciences and Chemistry at the University of Edinburgh, 2007

Degree in Geoecology (Diplom Geoökologie) obtained from Technical University Braunschweig, Germany (Technische Universität Carolo-Wilhelmina zu Braunschweig). First Class, 2003


Recent Publications:

Medinets S, White SM, Cowan NJ, Drewer J, Dick J, Jones MR, Andrews C, Harvey DDJ, Skiba U. (2021). Impact of climate change on soil nitric oxide and nitrous oxide emissions from typical land uses in Scotland. Environmental Research Letters,10.1088/1748-9326/abf06e

Drewer, J., Leduning, M. M., Griffiths, R. I., Goodall, T., Levy, P. E., Cowan, N., Comynn-Platt, E., Hayman, G., Sentian, J., Majalap, N., and Skiba, U. M.: Comparison of greenhouse gas fluxes from tropical forests and oil palm plantations on mineral soil, Biogeosciences, 18, 1559-1575, 2021.

Drewer, J., Leduning, M. M., Purser, G., Cash, J. M., Sentian, J., and Skiba, U. M.: Monoterpenes from tropical forest and oil palm plantation floor in Malaysian Borneo/Sabah: emission and composition, Environmental Science and Pollution Research, 10.1007/s11356-021-13052-z, 2021.

Móring, A., S. Hooda, N. Raghuram, T.K. Adhya, A. Ahmad, S.K. Bandyopadhyay, T. Barsby, G. Beig, A.R. Bentley, A. Bhatia, U. Dragosits, J. Drewer, J. Foulkes, S.D. Ghude, R. Gupta, N. Jain, D. Kumar, R.M. Kumar, J.K. Ladha, P.K. Mandal, C.N. Neeraja, R. Pandey, H. Pathak, P. Pawar, T.K. Pellny, P. Poole, A. Price, D.L.N. Rao, D.S. Reay, N.K. Singh, S.K. Sinha, R.K. Srivastava, P. Shewry, J. Smith, C.E. Steadman, D. Subrahmanyam, K. Surekha, K. Venkatesh, Varinderpal-Singh, A. Uwizeye, M. Vieno, and M.A. Sutton, Nitrogen Challenges and Opportunities for Agricultural and Environmental Science in India. Frontiers in Sustainable Food Systems, 2021. 5(13).

Purser, G., Drewer, J., Heal, M. R., Sircus, R. A. S., Dunn, L. K., and Morison, J. I. L.: Isoprene and monoterpene emissions from alder, aspen and spruce short rotation forest plantations in the UK, Biogeosciences Discuss., 2020,

Cowan, N., Maire, J., Krol, D., Cloy, J.M., Hargreaves, P., Murphy, R., Carswell, A., Jones, S.K., Hinton, N., Anderson, M., Famulari, D., Bell, M.J., Stack, P., Levy, P., Skiba, U. and Drewer, J., Agricultural soils: a sink or source of methane across the British Isles?. Eur J Soil Sci., 2020,

Skiba, U., Hergoualc’h, K., Drewer, J., Meijide, A., Knohl, A.: Oil palm plantations are large sources of nitrous oxide, but where are the data to quantify the impact on global warming? Current Opinion in Environmental Sustainability, 2020, 47:81-88 doi:

Drewer, J., Leduning, M. M., Griffiths, R. I., Goodall, T., Levy, P. E., Cowan, N., Comynn-Platt, E., Hayman, G., Sentian, J., Majalap, N., and Skiba, U. M.: Comparison of greenhouse gas fluxes and microbial communities from tropical forest and adjacent oil palm plantations on mineral soil, Biogeosciences Discuss., 2020, 1-55, 10.5194/bg-2020-297.

Purser, G., Heal, M.R., White, S., Morison, J.I.L., Drewer, J., Differences in isoprene and monoterpene emissions from cold-tolerant eucalypt species grown in the UK, Atmospheric Pollution Research, 2020. doi:

Zhao, J., Y. Meng, J. Drewer, U. Skiba, J. Prosser, and C. Gubry-Rangin, Differential ecosystem function stability of ammonia oxidising archaea and bacteria following short-term environmental perturbation. mSystems, 2020. 5(3): p. e00309-20.

Song, L., J. Drewer, B. Zhu, M. Zhou, N. Cowan, P. Levy, and U. Skiba, The impact of atmospheric N deposition and N fertilizer type on soil nitric oxide and nitrous oxide fluxes from agricultural and forest Eutric Regosols. Biology and Fertility of Soils, 2020. doi:

Drewer, J., Z., J. Zhao; M.M.Leduning, P.E. Levy, J. Sentian, C. Gubry-Rangin, and U. Skiba, Linking nitrous oxide and nitric oxide fluxes to microbial communities in tropical forest soils and oil palm plantations in Malaysia in laboratory incubations. Frontiers in Forests and Global Change-Tropical Forests, 2020. 3 (4).

Luke, S.H., A.D. Advento, A.A.K. Aryawan, D.N. Adhy, A. Ashton-Butt, H. Barclay, J.P. Dewi, J. Drewer, , A.J. Dumbrell, Edi, A.E. Eycott, M.F. Harianja, J.K. Hinsch, A.S.C. Hood, C. Kurniawan, D.J. Kurz, D.J. Mann, K.J. Matthews Nicholass, M. Naim, M.D. Pashkevich, G.W. Prescott, S. Ps, Pujianto, D. Purnomo, R.R. Purwoko, S. Putra, T.D.S. Rambe, Soeprapto, D.M. Spear, Suhardi, D.J.X. Tan, H.-H. Tao, R.S. Tarigan, R. Wahyuningsih, H.S. Waters, R.H. Widodo, Whendy, C.R. Woodham, J.-P. Caliman, E.M. Slade, J.L. Snaddon, W.A. Foster, and E.C. Turner, Managing Oil Palm Plantations More Sustainably: Large-Scale Experiments Within the Biodiversity and Ecosystem Function in Tropical Agriculture (BEFTA) Programme. Frontiers in Forests and Global Change, 2020. 2(75).

Levy, P., J. Drewer, M. Jammet, S. Leeson, T. Friborg, U. Skiba, and M.v. Oijen, Inference of spatial heterogeneity in surface fluxes from eddy covariance data: A case study from a subarctic mire ecosystem. Agricultural and Forest Meteorology, 2020. 280: p. 107783.

Kerdraon, D., J. Drewer, A.Y.C. Chung, N. Majalap, E.M. Slade, L. Bréchet, A. Wallwork, B. Castro-Trujillo, and E.J. Sayer, Litter Inputs, but Not Litter Diversity, Maintain Soil Processes in Degraded Tropical Forests—A Cross-Continental Comparison. Frontiers in Forests and Global Change, 2020. 2(90).

Cowan, N., E. Carnell, U. Skiba, U. Dragosits, J. Drewer, and P. Levy, Nitrous oxide emission factors of mineral fertilisers in the UK and Ireland: A Bayesian analysis of 20 years of experimental data. Environment International, 2020. 135: p. 105366.

Flechard, C. R., van Oijen, M., Cameron, D. R., de Vries, W., Ibrom, A., Buchmann, N., Dise, N. B., Janssens, I. A., Neirynck, J., Montagnani, L., Varlagin, A., Loustau, D., Legout, A., Ziemblińska, K., Aubinet, M., Aurela, M., Chojnicki, B. H., Drewer, J., Eugster, W., Francez, A.-J., Juszczak, R., Kitzler, B., Kutsch, W. L., Lohila, A., Longdoz, B., Matteucci, G., Moreaux, V., Neftel, A., Olejnik, J., Sanz, M. J., Siemens, J., Vesala, T., Vincke, C., Nemitz, E., Zechmeister-Boltenstern, S., Butterbach-Bahl, K., Skiba, U. M., and Sutton, M. A.: Carbon–nitrogen interactions in European forests and semi-natural vegetation – Part 2: Untangling climatic, edaphic, management and nitrogen deposition effects on carbon sequestration potentials. Biogeosciences, 2020. 17, 1621–1654.

Flechard, C. R., Ibrom, A., Skiba, U. M., de Vries, W., van Oijen, M., Cameron, D. R., Dise, N. B., Korhonen, J. F. J., Buchmann, N., Legout, A., Simpson, D., Sanz, M. J., Aubinet, M., Loustau, D., Montagnani, L., Neirynck, J., Janssens, I. A., Pihlatie, M., Kiese, R., Siemens, J., Francez, A.-J., Augustin, J., Varlagin, A., Olejnik, J., Juszczak, R., Aurela, M., Berveiller, D., Chojnicki, B. H., Dämmgen, U., Delpierre, N., Djuricic, V., Drewer, J., Dufrêne, E., Eugster, W., Fauvel, Y., Fowler, D., Frumau, A., Granier, A., Gross, P., Hamon, Y., Helfter, C., Hensen, A., Horváth, L., Kitzler, B., Kruijt, B., Kutsch, W. L., Lobo-do-Vale, R., Lohila, A., Longdoz, B., Marek, M. V., Matteucci, G., Mitosinkova, M., Moreaux, V., Neftel, A., Ourcival, J.-M., Pilegaard, K., Pita, G., Sanz, F., Schjoerring, J. K., Sebastià, M.-T., Tang, Y. S., Uggerud, H., Urbaniak, M., van Dijk, N., Vesala, T., Vidic, S., Vincke, C., Weidinger, T., Zechmeister-Boltenstern, S., Butterbach-Bahl, K., Nemitz, E., and Sutton, M. A.: Carbon–nitrogen interactions in European forests and semi-natural vegetation – Part 1: Fluxes and budgets of carbon, nitrogen and greenhouse gases from ecosystem monitoring and modelling. Biogeosciences, 2020. 17, 1583–1620.

Luke, S.H., E.M. Slade, C.L. Gray, K.V. Annammala, J. Drewer, J. Williamson, A.L. Agama, M. Ationg, S.L. Mitchell, C.S. Vairappan, and M.J. Struebig, Riparian buffers in tropical agriculture: Scientific support, effectiveness and directions for policy. Journal of Applied Ecology, 2019. 56(1): p. 85-92.

Kerdraon, D., J. Drewer, B. Castro, A. Wallwork, J.S. Hall, and E.J. Sayer, Litter Traits of Native and Non-Native Tropical Trees Influence Soil Carbon Dynamics in Timber Plantations in Panama. Forests, 2019. 10(3): p. 209.