Fig 4.

Methane uptake in incubations under conditions with in situ methane concentrations (0.004% [vol/vol]) in termite mounds 1 (A) and 2 (B). Incubations were performed with samples from the active nest area and their respective reference soils in triplicate, the the results are means ± standard deviations. Samples are indicated by height (cm) above the ground (see the height for each sampling site in Table 1). Incubation conditions were similar during preincubation and the subsequent incubation. The methane uptake rates determined from linear regression during these incubations are given in Table 1.