Module 6 - Microbes in the environment

Question 1

Two main pathways of carbon into soils

Answer 1

Litter - dead shoots, roots, and symbionts

Exudates - ‘active’ carbon via live roots and mycorrhizal fungi

Question 2

Elevated CO₂ levels - the effects on terrestrial ecosystems

Answer 2

23% increase in net primary production (NPP)
12% increase in soil respiration
14-96% increase in root biomass