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Roger Grau-Andrés

Roger Grau-Andrés
Ecosystem ecologist studying the role of the bryosphere on carbon cycling in boreal forests


I am an ecologist with a background in fire, peatland and bryophyte ecology. For my PhD (Glasgow, Scotland), I studied the effect of fire severity on peatland and heathland community composition and carbon fluxes (carbon dioxide and methane emissions, dissolved organic carbon). In my previous post-doc position, I looked at how bryophyte community composition varies along environmental gradients in peatlands in Ohio (US). For this post-doc at SLU-Umeå, I will use my expertise in bryophyte ecology and carbon dynamics in a brand new habitat (to me!), the boreal forest, to study the role of the bryosphere on carbon cycling.


The bryosphere (moss layer and litter and other organisms living within it) is an important driver of carbon fluxes in boreal forests. To protect the globally-substatial amount of carbon stored in boreal forests, we need a good understanding of how belowground carbon dynamics respond to climatic and environmental change. To assess the long-term effect of the bryosphere on carbon cycling and sequestration, I am using a long-term (+20 years) plant functional type removal experiment across a boreal forest productivity gradient. Additionally, I am studying how the carbon cycling in the bryosphere responds to projected changes in precipitation patterns, and the role that the moss food web plays.


- 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).


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

Selected publications

- 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:

Postdoctor at the Department of Forest Ecology and Management; Plant-soil feedbacks
Postal address:
Skogens ekologi och skötsel
901 83 Umeå
Visiting address: Skogsmarksgränd 17, Umeå