Forestry Hanover Seminar Series presents: Fernanda Santos, Michigan State University

Date: January 27, 2015
Location: 225 Natural Resources

Time: 4 p.m. (Refreshments at 3:50 p.m.)

Forestry Hanover Seminar Series presents:

Tracing the fate of slowly-cycling C pools in temperate forest soils

Presented by:

Fernando Santos
Department of Forestry
Michigan State University

Abstract: Soil organic matter (SOM) is the dominant reservoir of organic carbon (C) in terrestrial ecosystems, storing approximately three times the size of the C pool in the atmosphere. In temperate forests, a major fraction of the SOM consists of slowly decaying soil organic C (SOC) pools. In this talk I will present research on the C and N dynamics of two significant, but poorly characterized slow pools of SOM: root litter and partially burned biomass (charcoal or black carbon). How long do these C pools stay in temperate forest soils? How are these pools affected by disturbances and soil edaphic factors? In addition to addressing these questions, I will demonstrate that, to improve long-term predictions of the impact of climate change on SOC fluxes, ecosystem scale C models should consider root detritus as a fast-cycling C pool in northern forest soils, incorporate the effect of soil mineral assemblage on the stability of SOM, and no longer assume that pyrogenic organic matter has a millennial mean residence time in soils.