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Roger Grau-Andrés

Roger Grau-Andrés
Ecosystem ecologist studying vegetation effects on carbon cycling in boreal forests


I am an ecologist with a background in fire behaviour and fire ecology research in peatlands and heathlands, and bryophyte ecology in wetlands. At SLU, I study the impact of altered vegetation composition on carbon cycling, the effect of changes in precipitation regimes on forest floor and bryosphere carbon cycling and on bryosphere fauna, the effects of the bryosphere on decomposition in boreal forest floors, and the impact of biochar soil amendment on tree biomass and on forest floor greenhouse gas emissions in production forests.


- June 2020 - current: Post-doc, SLU-Umeå. Effects of biochar soil amendment on tree growth, understory composition, and greenhouse gas emissions in boreal forests.

- June 2018 - May 2020: Post-doc, SLU-Umeå. The bryosphere as mediator of carbon cycling in boreal forests.

- May 2017 - December 2017: Post-doc, Ohio State University. Indicators for assessing the Potential for Restoration of Ohio’s Peat Bog ecosystems.

- 2012 - 2016: PhD, The University of Glasgow. Drought and fuel structure controls on fire severity. Effects on post-fire vegetation and soil carbon dynamics

- 2009 - 2011: MSc Environmental Engineering. The University of Valencia (Spain).

- 2003 - 2007: BSc Environmental Sciences. The Univesrity of Valencia (Spain).


Prof. Michael Gundale (Dpt Forest Ecology and Management, SLU-Umeå)

Dr Paul Kardol (Dpt Forest Ecology and Management, SLU-Umeå)

Selected publications

- Grau‐Andrés, R.; Pingree, M.R.; Öquist, M.G.; Wardle, D.A.; Nilsson, M.C. & Gundale, M.J., Biochar increases tree biomass in a managed boreal forest, but does not alter N2O, CH4 and CO2 emissions. GCB Bioenergy. DOI:

- Grau-Andrés, R.; Wardle D.A.; Nilsson M.C. & Kardol, P. Precipitation regime controls bryosphere carbon cycling similarly across contrasting ecosystems. Oikos, 2021, 130(4):512-24. DOI:

- Grau‐Andrés, R.; Wardle, D.A.; Gundale, M.J.; Foster, C.N. & Kardol, P. Effects of plant functional group removal on CO2 fluxes and belowground C stocks across contrasting ecosystems. Ecology, 2020, 101(12), p.e03170. DOI:

- Grau-Andrés, R.; Davies, G.M.; Rey-Sanchez, C. & Slater, J. Bryophyte community composition and diversity are indicators of hydrochemical and ecological gradients in temperate kettle hole mires in Ohio, USA. Mires and Peat, 2019, 24, 37. DOI:

- Grau-Andrés, R.; Gray, A.; Davies, G. M.; Scott, E. M. & Waldron, S. Burning increases post-fire carbon emissions in a heathland and a raised bog, but experimental manipulation of fire severity has no effect. Journal of Environmental Management, 2019, 233, 321-328. DOI:

- Grau-Andrés, R.; Davies, G. M.; Waldron, S.; Scott, E. M. & Gray, A. Increased fire severity alters initial vegetation regeneration across Calluna-dominated ecosystems. Journal of Environmental Management, 2019, 231, 1004-1011. DOI:

- Grau-Andrés, R.; Davies, G. M.; Gray, A.; Scott, E. M. & Waldron, S. Fire severity is more sensitive to low fuel moisture content on Calluna heathlands than on peat bogs. Science of the Total Environment, 2018, 616-617, 1261-1269. DOI:

- Grau-Andrés, R.; Gray, A. & Davies, G. M. Sphagnum abundance and photosynthetic capacity show rapid short-term recovery following managed burning. Plant Ecology & Diversity, 2017, 10 353-359. DOI:

- Grau-Andrés, R.; Davies, G. M.; Waldron, S.; Scott, E. M. & Gray, A. Leaving moss and litter layers undisturbed reduces the short-term environmental consequences of heathland managed burns. Journal of Environmental Management, 2017, 204, 102-110. DOI:


Non employee at the Department of Forest Ecology and Management; Department of Forest Ecology and Management, joint staff
Postal address:
Skogens ekologi och skötsel
901 83 Umeå
Visiting address: Skogsmarksgränd 17, Umeå