Stabilization mechanisms of soil organic matter in high mountain volcanic soils

2 pages, 11 references.-- Poster presentado al citado congreso en la Sesion II: Soil (S) No 573.-- Book of Abstracts of the Communications presented to the 26th International Meeting on Organic Geochemistry (IMOG), held in Costa Adeje, Tenerife – Spain, September 15 – 20, 2013.