This document discusses using stem mapping to understand patterns of soil respiration. It notes that forest stands are about evenly split between trees associated with arbuscular mycorrhizae fungi and ectomycorrhizae fungi. Stands dominated by trees with arbuscular mycorrhizae are likely to have higher soil respiration rates, since these fungi promote more microbial activity in the soil. The study will identify tree positions, measure soil respiration data, and compare it to the dominant tree species in the stands.