Figure 5. Riparian forest soil methane flux rates from reference (R; n = 3), buffer (B; n = 3), and no buffer (NB; n = 3) treatments, and from groundwater discharge (DIS) and non-groundwater discharge (ND) areas along headwater streams in the Pacific coastal temperate rainforest of British Columbia in 2019 (June - September). Boxplots that do not share the same uppercase letter show significant differences based on LME models (p < 0.05).