Figure 5

Air flow in relation to applied pressure for core and buttress regions of (a) abandoned and (b) occupied mounds. Open circles represent means. n = 1 for abandoned mound; n = 6 for occupied mounds.
Air flow in relation to applied pressure for core and buttress regions of (a) abandoned and (b) occupied mounds. Open circles represent means. n = 1 for abandoned mound; n = 6 for occupied mounds.