Fig 4. Accumulation rates for sign vs. encounters (% of transects on which they are detected as the study progresses) for 16 unhunted species.

Effort is reported in terms of cumulative survey months and equivalent kilometers walked. The Y axis represents the number of transects with presence recorded. The X axis represents the number of times transects were walked (i.e., number of times you have to resample the study area). A solid line represents sign and the hatched line encounters.