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Table 1 Overview of data collected using autonomous recording devices at two chimpanzee field sites

From: Passive acoustic monitoring reveals group ranging and territory use: a case study of wild chimpanzees (Pan troglodytes)

# of recording months habitat chimpanzee population chimpanzee density (inds/ km2) # of devices study area acoustic signal
Issa valley, Tanzania
 11 savanna-woodland unhabituated 0.25 10 12 km2 pant hoot
Taï, Côte d’Ivoire
 7 rainforest habituated 0.97 20 45 km2 drum