Imperial College London


Faculty of Natural SciencesDepartment of Life Sciences (Silwood Park)

Visiting Researcher







Sir Alexander Fleming BuildingSouth Kensington Campus





Dr Saiz's research interests focus on better understanding biogeochemical processes in terrestrial environments with special emphasis on the study of the pyrogenic carbon cycle, and soil organic matter dynamics as affected by environmental change.

He obtained his PhD degree in 2006 at the School of Biology and Environmental Science, University College Dublin (Ireland), where he investigated the role of forestry in mitigating greenhouse gas emissions through carbon sequestration. From 2006 until 2010 Dr Saiz worked as a postdoctoral research associate in St Andrews University (UK), where he was part of the NERC-UK-funded ‘TROpical Biomes In Transition-TROBIT’ project. He studied soil organic matter dynamics as affected by vegetation change and fire in semi-natural tropical ecosystems on three continents. In 2010 he moved to James Cook University (Cairns, Australia) to work on the quantification of production and stable isotope composition of pyrogenic carbon from tropical savanna burning. Since 2011 Dr Saiz has been working as a senior scientist at the Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology (KIT-Germany), where he has continued investigating soil organic matter dynamics in a wide range of terrestrial ecosystems.

Dr Saiz has developed a comprehensive range of scientific skills, including experimental design, laboratory analyses and data interpretation. He routinely applies stable isotope techniques to investigate the effects of vegetation dynamics, land use change, soil erosion, and agricultural management on soil organic matter dynamics under current environmental change and increasing anthropogenic pressure. 



Quesada CA, Paz C, Mendoza EO, et al., 2020, Variations in soil chemical and physical properties explain basin-wide Amazon forest soil carbon concentrations, Soil, Vol:6, ISSN:2199-3971, Pages:53-88

Fungo B, Chen Z, Butterbach-Bahl K, et al., 2019, Nitrogen turnover and N2O/N-2 ratio of three contrasting tropical soils amended with biochar, Geoderma, Vol:348, ISSN:0016-7061, Pages:12-20

Gerschlauer F, Saiz G, Schellenberger Costa D, et al., 2019, Stable carbon and nitrogen isotopic composition of leaves, litter, and soils of various ecosystems along an elevational and land-use gradient at Mount Kilimanjaro, Tanzania, Biogeosciences, Vol:16, ISSN:1726-4170, Pages:409-424

Abaker WE, Berninger F, Saiz G, et al., 2018, Linkages between soil carbon, soil fertility and nitrogen fixation in Acacia senegal plantations of varying age in Sudan, Peerj, Vol:6, ISSN:2167-8359

Saiz G, Goodrick I, Wurster C, et al., 2018, Preferential production and transport of grass-derived pyrogenic carbon in NE-Australian savanna ecosystems, Frontiers in Earth Science, Vol:5, ISSN:2296-6463

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