The Use of Camera‐Traps to Monitor Forest Antelope Species

Amin, Rajan; Bowkett, Andrew E.; Wacher, Tim

doi:10.1002/9781118409572.ch11

Cited by 8 publications

(5 citation statements)

References 56 publications

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“…This training enabled five teams, each comprising two trained personnel, to deploy the camera-trap grids. During the analysis phase uncertain species identifications can be independently validated by experts, which increases the confidence of the estimates generated using this method (Amin et al, 2016). There is the potential for camera-trap distance sampling to be used to obtain density estimates for other species of conservation concern such as elephants, great apes and pangolins (Cappelle et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Estimating forest antelope population densities using distance sampling with camera traps

Amin

Klair

Wacher

et al. 2021

Oryx

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Traditional transect survey methods for forest antelopes often underestimate density for common species and do not provide sufficient data for rarer species. The use of camera trapping as a survey tool for medium and large terrestrial mammals has become increasingly common, especially in forest habitats. Here, we applied the distance sampling method to images generated from camera-trap surveys in Dja Faunal Reserve, Cameroon, and used an estimate of the proportion of time animals are active to correct for negative bias in the density estimates from the 24-hour camera-trap survey datasets. We also used multiple covariate distance sampling with body weight as a covariate to estimate detection probabilities and densities of rarer species. These methods provide an effective tool for monitoring the status of individual species or a community of forest antelope species, information urgently needed for conservation planning and action.

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Section: Discussionmentioning

confidence: 99%

Estimating forest antelope population densities using distance sampling with camera traps

Amin

Klair

Wacher

et al. 2021

Oryx

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“…The status of the lowland bongo in West Africa remains uncertain with populations fragmented and declining in many areas (East, 1999; Elkan & Smith, 2013). Camera‐traps offer an effective approach for assessing the status of this elusive, mostly nocturnal and yet wide‐ranging species in dense forest habitat (Amin et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Medium‐to‐large mammal diversity and status of forest antelopes in the Sapo National Park, Liberia

Amin

Wacher

Kerwillain³

et al. 2022

Afr J Ecol

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Sapo National Park, Liberia's largest protected area, comprises an area of 1804 km 2 within the Upper Guinea forest ecosystem, a global biodiversity hot spot. Our baseline camera-trap study revealed 32 medium-to-large mammal species, including ten Upper Guinea forest endemics, within the park. Results show important populations of threatened antelopes, particularly zebra duiker and Jentink's duiker, along with bay duiker, black duiker, Ogilby's duiker and Maxwell's duiker. Water chevrotain and lowland bongo were also recorded. Camera-trap images of giant and white-bellied pangolins, western chimpanzee, pygmy hippopotamus and forest elephant collected during this study further confirm the high conservation value of the site. The ecology of the antelope community is investigated, noting the diurnal activity pattern of zebra duiker and the nocturnal activity of Jentink's duiker, in contrast to previous studies. Both species preferred lower altitude primary forest. Ogilby's duiker was the only antelope that showed a preference for higher altitude forest and was found to be more common than the similar-sized black duiker and bay duiker. Sapo National Park faces many threats including habitat degradation, poaching for bushmeat and animal parts, and illicit gold mining. Commercial logging and agriculture in the buffer and surrounding forested areas threatens connectivity and increases human-wildlife conflict.

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“…In Ta€ ı National Park, leopards primarily consume Maxwell duikers Cephalophus maxwelli followed by pangolins Manis tetradactyla/triscuspis (Zuberb€ uhler & Jenny, 2002). Leopards in Ta€ ı and Maxwell duikers showed diurnal activity patterns (Amin et al, 2016;Jenny & Zuberb€ uhler, 2005), whereas pangolins are arboreal and show nocturnal activity (Foley et al, 2014). Therefore, leopards do not necessarily show the same activity patterns as their primary, staple prey species.…”

Section: The Activity Pattern Of Leopardsmentioning

confidence: 99%

Overlap of activity patterns between leopards and their potential prey species in Mahale Mountains National Park, Tanzania

Nakazawa

2022

Journal of Zoology

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The activities of predators and prey have been reported to influence each other. However, few studies have clarified when African leopards Panthera pardus are likely to encounter their prey. One reason for this is that the activity patterns of African forest mammals are poorly understood. Therefore, I aimed to clarify the activity patterns of leopards and their prey species by deploying camera traps on the ground and in trees in Mahale Mountains National Park, Tanzania. In total, 4468 camera days of camera traps set on the ground and 286 camera days of camera traps set in trees were analyzed. The overlap in activity patterns between leopards and their main prey species was calculated using coefficient Δ. At least seven leopards were identified in the study area. Leopards were active throughout the day, with crepuscular peaks at dawn and dusk. Blue duikers Philantomba monticola, the most consumed species in Mahale, were predominantly diurnal. The activity patterns of leopards moderately overlapped with those of blue duikers (Δ = 0.65). The activity patterns of leopards showed a moderate (Δ = 0.61) or low (Δ = 0.42) overlap with those of red‐tailed monkeys Cercopithecus ascanius when detections were captured by arboreal or terrestrial cameras, respectively. Mahale leopards may hunt blue duikers and arboreal primates in the midday on the ground, and may also attack primates in roost trees at night. Future studies on the leopard diet in various study areas, as well as comparisons of activity patterns between leopards and other animals, will elucidate leopard ecology.

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The Use of Camera‐Traps to Monitor Forest Antelope Species

Cited by 8 publications

References 56 publications

Estimating forest antelope population densities using distance sampling with camera traps

Estimating forest antelope population densities using distance sampling with camera traps

Medium‐to‐large mammal diversity and status of forest antelopes in the Sapo National Park, Liberia

Overlap of activity patterns between leopards and their potential prey species in Mahale Mountains National Park, Tanzania

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