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Fig. 1 | Frontiers in Zoology

Fig. 1

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

Fig. 1

Chimpanzee drum detection probability at ARUs versus chimpanzee ranging activity within a 1 km radius of the device. Data were collected across 7 months in Taï forest where the probability that an ARU detected a chimpanzee drum was influenced by nearby chimpanzee ranging activity (est ± SE: 0.408 ± 0.14, X2 = 5.90, df = 1, N = 1410, P = 0.015). The dashed line shows the results of the fitted model per six hours of ARU recording effort. For plotting purposes only, data points were binned per 10 h of chimpanzee activity to obtain a mean detection probability per bin (blue points). The relative area of the circles corresponds to the log of the number of data points (range = 2 to 1111) per bin

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