2004
DOI: 10.1002/ajp.20072
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Effects of group dynamics and diet on the ranging patterns of a western gorilla group (Gorilla gorilla gorilla) at Bai Hokou, Central African Republic

Abstract: This study describes how group dynamics and diet have influenced the ranging patterns of a western gorilla group at Bai Hokou, Central African Republic. The results are compared with those from an earlier study [Cipolletta, International Journal of Primatology, 2003], when the same group was larger and undergoing the process of habituation to humans. Data were obtained from maps of the gorillas' travel routes, direct observations, and analysis of fecal samples. Through the years, the group has experienced a de… Show more

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Cited by 105 publications
(91 citation statements)
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References 32 publications
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“…Longer DPLs and larger home range sizes would require greater tracking effort. However, both are remarkably similar for groups at Mondika and Bai Hokou [Cipolletta, 2003[Cipolletta, , 2004, and therefore cannot account for the difference. A more likely explanation is that higher gorilla density [A. Todd, unpublished data] and greater contemporaneous home range overlap at Mondika led to more frequent trail mix-ups compared to Bai Hokou, where once trail was found it was almost certain to be that of the study group as it was rare to encounter the trail of another group within the focal group's home range [Cipolletta, 2003].…”
Section: Availability Of Tracking Expertisementioning
confidence: 56%
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“…Longer DPLs and larger home range sizes would require greater tracking effort. However, both are remarkably similar for groups at Mondika and Bai Hokou [Cipolletta, 2003[Cipolletta, , 2004, and therefore cannot account for the difference. A more likely explanation is that higher gorilla density [A. Todd, unpublished data] and greater contemporaneous home range overlap at Mondika led to more frequent trail mix-ups compared to Bai Hokou, where once trail was found it was almost certain to be that of the study group as it was rare to encounter the trail of another group within the focal group's home range [Cipolletta, 2003].…”
Section: Availability Of Tracking Expertisementioning
confidence: 56%
“…First, relative to other primates, they are characterized by low population density, frequently less than one individual/km 2 [Tutin and Fernandez, 1991]. This, in combination with large (11-15 km 2 ) home ranges [Bermejo, 2004;Cipolletta, 2004; and infrequent long-distance vocalizations relative to other African apes [Mitani, 1996], makes them difficult to locate. Second, even when found, gorillas are difficult to observe because habitat visibility is limited (o10 m), precluding contacts from a distance they perceive as safe, while still visible to humans.…”
mentioning
confidence: 98%
“…It has long been held that researchers or tourists that follow a primate group may impact their behavior in a number of ways [Cipolletta, 2004;Klailova et al, this issue;Wrangham, 1974]. Growing interest and concerns over primate eco-tourism projects mean that a complete understanding of our impact on primates' behavior and health is required in order to make sufficient cost-benefit analyses.…”
Section: Impact Of Tourism and Researchmentioning
confidence: 96%
“…Grieser Johns 1996;Van Krunkelsvewn et al 1999;Blom et al 2004;Bertolani & Boesch 2008;Jack et al 2008). Other measures of behaviour, including day range (Rasmussen 1998;Cipolletta 2004) and activity budget (Williamson & Feistner 2003) also tend to change as the amount of time an animal has been under observation increases. Such patterns are taken as evidence of habituation, and scientists assume that once these obvious behavioural responses to human presence have ceased, the study animals have returned to their normal patterns of daily activity.…”
Section: Introductionmentioning
confidence: 99%