Nadia Barsoum, BSc, PhD

Biodiversity Project Manager and Ecohydrologist

Nadia Barsoum


Tel: +44 (0)300 067 5600
Tel direct: +44 (0)300 067 5618
Fax: +44 (0)1420 23653

Forest Research
Alice Holt Lodge
Surrey GU10 4LH

Nadia joined Forest Research in 2004. She studied for an Ecology BSc. degree at King’s College London (1990-93). This was followed by a period of work as an Environmental Consultant in London. Between 1994-1998 Nadia worked towards her PhD degree in Floodplain Woodland Ecology at the Department of Geography, University of Cambridge.

Nadia continued to pursue her research interests in Riparian Ecology through Post-Doctoral Research (1999-2004) at the Centre d’Ecologie de Systèmes Aquatiques Continentaux (CESAC-CNRS), Toulouse, France and the Universities of Umeå and Mid-Sweden, Sweden. She also worked over this period for the French Ministry of Environment, producing for them a critical appraisal of 10+ years of French Ministry of Environment-funded Biodiversity research.

On joining Forest Research, Nadia was primarily engaged in developing and refining protocols for local and regional scale monitoring and assessment of environmental variables in forests. She lead the UK Long-term Intensive Forest Monitoring Network (an EU-wide forest monitoring platform) from 2004-2009.  Since 2009 Nadia has been leading research in forest biodiversity

Current role

Biodiversity Project Manager and Ecohydrologist

Responsibility to provide the Forestry Commission and wider forestry sector with guidance on best forestry practice to protect and enhance woodland biodiversity and also effective means of monitoring, assessing, and reporting on forest biodiversity. Current specific areas of research and knowledge transfer relate to the biodiversity implications of a number of key forestry policy measures in Britain including (i) a drive for an increase in woodfuel production from existing woodland resources and short rotation forestry crops (e.g. eucalypts), (ii) the promotion of increased structural complexity in forest stands by creating a mixed age/compositional structure and (iii) the conversion of non-native to native woodlands.

There are active collaborations with Forest Research’s Ecosystem Services and Climate Change Adaptation Programmes covering the topics of forest regeneration, tree growth, provenance selection and indicators of forest ecosystem function.

Current and previous programmes

Affiliations and achievements

  • Member of British Ecological Society
  • Member of American Institute of Biological Sciences
  • Member of Society for Wetland Scientists
  • Member of COST E43 (Biodiversity Working Group) - WG3 - Harmonisation of National Forest inventories

Workshops organised to raise debate and generate discussion for future research:

Workshop Year Location
Belowground Indicators of Tree Health 2005 Alice Holt, Farnham
Linking pattern and process in mycorrhizas at the European scale 2009 Centre for Population Biology at Silwood Park, Ascot
Ecosystem services – the answer to communicating the benefits of forestry?
Institute of Chartered Foresters AGM
2009 Alice Holt, Farnham

Current and past areas of research

  • Forest biodiversity responses to a diversification of forest structure (mixed aged stands, mixed species stands)
  • Woodfuel production and forest biodiversity
  • Biodiversity indicators and forest condition indicators
  • Multifunctional role of forests / forest ecosystem services
  • Floodplain woodland /wetland ecology
  • Ecology of the Salicaceae (environmental factors influencing regeneration, sex ratios, clonal growth, genotypic diversity)
  • Climate change and forest adaptation
  • Air pollution and forest health
  • Genotypic and genetic structure of plant populations
  • Ectomycorrhizal communities in forests
  • Forest regeneration.

Main recent publications

Peer-reviewed publications

Suz, L.M., Kallow, S., Reed, K., Bidartondo, M.I. and Barsoum, N. (2017) Pine mycorrhizal communities in pure and mixed pine-oak forests: abiotic environment trumps neighboring oak host effects. Forest Ecology and Management, in press

P. M. Evans, A. C. Newton, E. Cantarello, P. Martin, N. Sanderson, D. L. Jones, N. Barsoum, J. E. Cottrell, S. W. A'Hara, L. Fuller 2017 Thresholds of biodiversity and ecosystem function in a forest ecosystem undergoing dieback. Scientific Reports 7(1) DOI: 10.1038/s41598-017-06082-6

Barsoum, N., Coote, L., Eycott, A.E., Fuller, L. and Kiewitt, A. and Davies, R.G. (2016) Diversity, functional structure and functional redundancy of woodland plant communities: how do mixed tree species plantations compare with monocultures? Forest Ecology and Management, 382, 244-256.

Verheyen, K., Vanhellemont, M., Auge, H., Baeten, L., Baraloto, C., Barsoum, N.,  Bilodeau-Gauthier, S. Bruelheide, H., Castagneyrol, B., Godbold, D., Haase, J., Hector, A., Jactel, H., Koricheva, J., Loreau, M., Mereu, S., Messier, C., Muys, B., Nolet, P., Paquette, A., Parker, J., Perring, M.,  Ponette, Q., Potvin, C., Reich, P., Smith, A.  & Scherer-Lorenzen, M. (2016) Contributions of a global network of tree diversity experiments to sustainable forest plantations. Ambio 45(1): 29-41.

Barsoum, N., Gill, R., Henderson, L., Peace, A., Quine, C., Saraev, V., and G. Valatin (2016) Biodiversity and rotation length: economic models and ecological evidence. Forestry Commission Research Note, FCRN022.

Barsoum, N and Henderson, L. (2016) Converting planted non-native conifer to native woodlands: a review of the benefits, drawbacks and experience in Britain. Forestry Commission Research Note 24. Forestry Commission, Edinburgh.

Spake. R., Barsoum, N., Newton, A.C., C., Doncaster, P.C. (2016) Drivers of the composition and diversity of carabid functional traits in UK coniferous plantations. Forest Ecology and Management: 359, 300–308.

Barsoum, N. (2015) Mixed provenance and mixed species trials aimed at informing the debate on how to prepare native tree species for climate change in England. Quarterly Journal of Forestry : 109(3):201-207.

McCartan, SA Jinks RL and Barsoum N (2015) Using thermal time models to predict the impact of assisted migration on the synchronization of germination and shoot emergence of pedunculate oak (Quercus robur L.). Annals of Forest Science:1-9. doi: 10.1007/s13595-014-0454-5

Suz, L.M., Barsoum, N., Benham, S., Cheffings, C., Cox, F., Hackett, L., Jones, A.G., Mueller, G.M., Orme, D., Seidling, W., Van der Linde, S., Bidartondo, M.I. (2015) Monitoring ectomycorrhizal fungi at large scales for science, management, conservation and environmental policy. Annals of Forest Science doi:10.1007/s13595-014-0447-4

Barsoum, N., Eaton E. L., Levanič, T., Pargade, J., Bonnart, X., Morison J. I. L. (2014) Climatic drivers of oak growth over the past one hundred years in mixed and monoculture stands in southern England and northern France. European Journal of Forest Research 134: 33-51.

Suz, L. M., Barsoum, N., Benham, S., Dietrich, H.P., Fetzer, K.D., Fischer, R., García, P., Gehrman, J., Kristöfel, F., Manninger, M.1, Neagu, S., Nicolas, M., Oldenburger, J., Raspe, S., Sánchez, G., Schröck, H.W., Schubert, A., Verheyen, K., Verstraeten, A. and Bidartondo, M.I. (2014) Environmental drivers of ectomycorrhizal communities in Europe's temperate oak forests. Molecular Ecology 23(22): 5628-44. doi: 10.1111/mec.12947

Barsoum, N., Fuller, L, Ashwood, F., Reed, K., Bonnet-Lebrun, A.-S. and Leung, F (2014) Ground-dwelling spider (Araneae) and carabid beetle (Coleoptera: Carabidae) community assemblages in mixed and monoculture stands of oak (Quercus robur L./Quercus petraea (Matt.) Liebl.) and Scots pine (Pinus sylvestris L.). Forest Ecology and Management. 321: 29–41.

Chirici, G., McRoberts, R. E., Winter, S., Bertini, R., Brändli, U.-B. Asensio, I.A Barsoum, N., Bastrup-Birk, A., Rondeux, J., and Marchetti, M. (2012). National Forest Inventory contributions to forest biodiversity monitoring. Forest Science 58(3):257-268.

Guilloy, H., Gonzalez, E., Muller, E., Hughes, F. M. R. and Barsoum, N. (2011) Abrupt drops in water table level influence the development of Populus nigra and Salix alba seedlings of different ages. Wetlands 31 (6), 1249-1261.

Pennington, H.G., Bidartondo, M.I. and Barsoum, N. (2011). A few exotic mycorrhizal fungi dominate eucalypts planted in England. Fungal Ecology, 4, 299-302.

Cox F., Barsoum E., Lilleskov E.A. and Bidartondo M.I. (2010). Nitrogen availability is a primary determinant of conifer mycorrhizas across complex environmental gradients. Ecology Letters, 13, 1103-1113.

Cox F., Barsoum N., Bidartondo M.I., Børja I., Lilleskov E., Nilsson L.O., Rautio P., Tubby K. and Vesterdal L. (2010). A leap forward in geographic scale for forest ectomycorrhizal fungi. Annals of Forest Science, 67(2), 200.

Barsoum, N. (2009). 3. NFI variables definitions, availability and comparability for assessing core forest biodiversity variables: 3.7 Regeneration. In 'Contribution of National Forest Inventories for Forest Biodiversity Assessment' Eds: Gherardo Chirici, Susanne Winter, Ronald McRoberts, Erkki Tomppo, Annemarie Bastrup-Birk. Springer-Verlag.

Vanguelova, E. I., Benham, S., Pitman, R., Barsoum, N., Moffat, A. J., Broadmeadow, M., Nisbet, T., Durrant, D., Wilkinson, M., Bochereau, F., Hutchings, T., Broadmeadow. S., Crow, P., Taylor, P. and Durrant, T. (2009). Chemical fluxes in time through forest ecosystems in the UK - soil response to pollution recovery. Environmental Pollution, 158 (5): 1857-1869.

Dufour, S., Barsoum, N., Muller, E. and Piégay, H. (2007). Effects of channel confinement on pioneer woody vegetation structure, composition and diversity along the River Drôme (SE France). Earth Surface Processes and Landforms 32, 1244-56.

Vangelova, E., Barsoum, N., Benham, S., Broadmeadow, N., Moffat, M., Nisbet, T. and Pitman, R. (2007). Ten Years of Intensive Forest

Monitoring. Forestry Commission Information Note 88. Forestry Commission, Edinburgh.

Barsoum, N., Muller, E. and Skot, L. (2004). Variations in levels of clonality among Populus nigra L. stands of different ages. Evolutionary Ecology. 18: 601-624.

Multiple authors and editors. (2004). The Flooded Forest: Guidance on Restoring Floodplain Woodlands for Policy Makers and River Managers in Europe. pp.96.

Barsoum, N. (2002). Relative contributions of sexual and asexual regeneration strategies in Populus nigra and Salix alba during the first years of establishment on a braided gravel bed river. Evolutionary Ecology 15, 255-279.

Guilloy-Froget, H., Muller, E., Barsoum, N., Hughes, F.M.R. (2002). Dispersal, Germination and Survival of Populus nigra L. (Saliacaceae) in Changing Hydrologic Conditions. WETLANDS 22 (3), 478-488.

Muller, E., Guilloy, H., Barsoum, N., Brocheton, L. (2002). Populus nigra L. en vallée de Garonne: legs du passé et constraintes du présent. C.R. Acad. Sciences 325, 1129-1141.

Barsoum, N. (2001). Regeneration: requirements and promotion measures. (PDF-787k). In EUFORGEN Technical Bulletin: In Situ Conservation of Populus nigra. (editors Lefèvre, F., Barsoum, N., Heinze, B., Kajba, D., Rotach, P., de Vries, S.M.G and Turok, J.) International Plant Genetic Resources Institute, Rome, Italy. Pp. 16-24.

Hughes, F.M.R., Adams, W.M., Barsoum, N., Décamps, H., Foussadier, R., Girel, J., Guilloy, H., Hayes, A., Johansson, M., Lambs, L., Muller, E., Nilsson, C., Pautou, G., Peiry, J-L., Perrow, M., Richards, K.S.R., Vautier, F., Winfield, M. (2001). Managing flows for the restoration of floodplain woodland: Local and reach scale factors in different European river types. Regulated Rivers: Research & Management 17, 325-345.

Hughes, F.M.R., Barsoum, N., Richards, K., Hayes, A., Winfield, M. (2000). The response of male and female black poplar (Populus nigra var betulifolia) to different water table depths and sediment types: Implications for flow management and river corridor biodiversity. Hydrological Processes 14, 3075-3098.

Barsoum, N. and Hughes, F.M.R. (1998). Regeneration response of Black poplar to changing river levels. In Hydrology in a Changing Environment. Vol. 1. (eds H. Wheater & C. Kirby), pp.397-412, John Wiley & Sons Ltd.

Hughes, F.M.R., Harris, T., Richards, K., Pautou, G., Barsoum, N., El-Hames, A., Girel, J., Peiry, J.-L., Foussadier, R. (1997). Woody riparian species response to different moisture conditions: Laboratory experiments on Alnus incana. J. Global Ecology and Biogeography Letters 6, 247-256.

Pautou, G., Girel, J., Peiry, J.-L., Hughes, F.M.R., Richards, K., Foussadier, R., Barsoum, N., Garguet-Duport, B., Harris, T. (1996). Changes in vegetation in fluvial hydrosystems using as examples the upper Rhône and the Isère in Grésivaudan. Rev. Ecol. Alp. Grenoble, tome III, 41-66.

Bark. A., Barsoum, N., Moore, P., Radcliffe, S., Turner, B. (1994). Software Review : Tablefit version 0.0 for Identification of Vegetation Types. Journal of Ecology, 82(4) pp. 987-8.

Proceedings/ Posters

Barsoum, N., McCartan, S., Wilkinson, M., Morison, J., Cottrell, J., Hubert, J. and Ray, D. (2015) Increasing the adaptation potential of native tree species to global change. Poster presented at end of ADAFOR project conference held at Penstock Barn, East Brabourne, Kent (March 5-6, 2015),

Bruce, C., Barsoum, N. Pedley, S., Ji, Y. and Yu, D. (2014) Metabarcoding: a powerful DNA-based tool for biomonitoring. SET for Britain 2014.

Eaton, E. L., Barsoum, N., Levanič, T., Pargade, J., Bonnart X. and Morison J. I. L. (2013) TRACE 2012 Proceedings ‘Inter-annual variation in oak growth over the past century in southern England and northern France’ International Tree ring Research Meeting (TRACE 2012) in Potsdam, Germany.

N. Barsoum, A-S. Bonnet-Lebrun, J. Brunt, A. Eycott, S. Kallow, A. Kiewitt, and M. Bidartondo. (2012) ‘Multitaxon responses to a ‘diversification’ in the composition of forest stands as an adaptation measure to global environmental change’ Conference Proceedings ‘Tackling climate change: contribution of forest scientific knowledge’ Tours, France.

Barsoum N., Eaton E. L., Levanič T., Pargade, J. Bonnart X. and Morison J. I. L (2012) ‘Key drivers of inter-annual variation in oak growth over the past century in southern Britain and north-eastern France’ Conference Proceedings ‘Tackling climate change: contribution of forest scientific knowledge’ Tours, France.

Barsoum, N., McCartan, S., Wilkinson, M., Morison, J., Cottrell, J., Hubert, J. and Ray, D. (2011). Increasing the adaptation potential of native tree species to climate change. Conference Proceedings Joint BES - Natural England Meeting ‘Adapting Conservation to a Changing Climate’ 11-12 January 2011, Charles Darwin House, London.

Barsoum, N., D. Williams, N. Straw, M. Jukes, R. Johnson, M. Bidartondo, A. Kiewitt and R. Ibrahim (2009). Consequences of increased stand structural complexity for floral diversity and the prevalence of insect pests in Sitka spruce (Picea sitchensis) stands. Conference Proceedings ‘Adapting Forest Management to Maintain the Environmental Services: Carbon Sequestration, Biodiversity, Water’. Koli National Park, Finland 21.9.-24.9.2009.

Contract reports

Barsoum, N., Henderson, L., Mackie, E., Morison, J. and Randle, T. (2015) Demonstrating a rapid biodiversity assessment methodology to facilitate the management of multiple forest ecosystem services(PDF-1132KB). Report to the FC and EU pp.94.

Eaton, E., Barsoum, N., Bonnart, X., Havet, N. and Morison, J. (2015) Oak phenology in southern England and northern France. Report to the FC and EU pp.19

Barsoum, N. A’Hara, S., Cottrell, J., Evans, P., Fuller, L. and Yu, D. (2015) Exploring the use of metabarcoding as a biomonitoring tool to detect critical thresholds of habitat cover for woodland-dependent arthropods along a gradient of beech forest dieback. Report to the FC and EU pp.28.

Barsoum, N. Gill, R., Henderson, L., Quine, C., Saraev, V. and Valatin, G. (2014) Links between biodiversity and rotation length. Report to the Forestry Commission.

Barsoum, N. and Henderson, L. (2014) Conversion of woodland from non-native to native tree species: Results of questionnaires put to forest managers on current practice. Report to the Forestry Commission.

Henderson, L., Ditchburn, B., Barsoum, N., Kirby, K. and UKNWHAP Group (2013) ‘Reporting on Forest Condition: Draft procedure’ (PDF-4810KB)Report to the Forestry Commission.

Sing, L. Barsoum, N. and Ray, D. (2013) ESC Climate Change validation study in France: An analysis to match GB and French sites in climate-matched areas. Report to EU Interreg and the Forestry Commssion.

Barsoum, N. (2012) Conversion of conifer plantation monocultures to native woodland: Current practical experience and reported influences on forest biodiversity’. Report to the Forestry Commission.

Barsoum, N., Garcia-Suarez, G. and Pitman, J. (2006) Monitoring work undertaken by Forest Research. Report to the Forestry Commission.

Barsoum, N. (2005) Data Evaluation Strategy: UK Long-Term Intensive Forest Monitoring Programme (Level II Network). Report to the Forestry Commission.

Barsoum, N., Anderson, R., Broadmeadow, S., Bishop, H and Nisbet, T. (2005). Eco-Hydrological Guidelines for Wet Woodlands - Phase 1. English Nature Research Report 619. English Nature, Peterborough.

Barsoum, N. (2000). The balance of black poplar (Populus nigra) regeneration strategies as a function of hydrology on floodplains. In 'Populus nigra' Network: Report of the Sixth Meeting, 6-8 February, 2000, Isle sur La Sorgue, France (compilers: Borelli, S., de Vries, S., Lefèvre, F., and Turok, J.) pp. 46-50, International Plant Genetic Resources Institute, Rome, Italy.

Popular articles

Cox F., Barsoum E., Lilleskov E.A., Bidartondo M.I. and Seidling W. (2010). Mykorrhizierung von Kiefernwurzeln. AFZ-DerWald , 65(24), 8-10.

Barsoum, N. (2007). Forest health - has acid rain made way for climate change? (And how will we know?) Forestry and Timber News, December Issue, 17-19.