Population Status of the Critically Endangered Preuss’s Red Colobus Monkey (Piliocolobus preussi Matschie 1900) and Recommendations for Its Conservation

Linder, Joshua M.; Astaras, Christos; Oates, John F.; Abanyam, Peter A.; Abwe, Ekwoge E.; Betobe, Ekole N.; Diotoh, Robinson O.; Dunn, Andrew; Eniang, Edem A.; Fonkwo, Sylvie Nguedem; Hofner, Alexandra N.; Imong, Inaoyom; Robinson, Carolyn A. Jost; Bobo, Kadiri Serge; Morgan, Bethan J.; Okon, David Tiku; Ormsby, Lucy Jayne

doi:10.1007/s10764-021-00202-w

Cited by 6 publications

(2 citation statements)

References 34 publications

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“…We analyzed the data using descriptive statistics through SPSS version 20 software (IBM SPSS Inc., Chicago, USA). We calculated encounter rates of black-and-white colobus monkey groups/km (Bobadilla & Ferrari, 2000;Rovero et al, 2012;Linder et al, 2021) and summarized sightings as the total number of individuals and groups observed in each forest patch (Anderson et al 2007;Linder et al 2021). Each forest patch was considered as an independent record.…”

Section: Discussionmentioning

confidence: 99%

Relative abundance and distribution of black-and-white colobus monkey (Colobus guereza guereza) and recommendations for its conservation in the northwestern Ethiopia

Kifle

Bekele

2022

Preprint

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Primates in the tropics are highly vulnerable to habitat loss and fragmentation as they depend on the forest for survival. Thus, reliable population and distribution data are crucial to identifying priority sites for conservation and designing effective management plans in the deforested region. To date, the population size and distribution of black-and-white colobus monkeys (Colobus guereza guereza) are unknown along the Ethiopian Highlands. Therefore, this study aimed to determine the relative abundance of black-and-white colobus monkeys and their current distribution pattern in the Awi Zone of the northwestern Ethiopia. We conducted population survey of black-and-white colobus monkeys using line transects between Oct 2020 and Sep 2021 in 27 forest patches of the region. We surveyed 27 forest patches and found black-and-white colobus monkeys in all patches. Overall, we recorded 328 group sightings of black-and-white colobus monkeys in these forest patches ranging between 1859 and 2557 m asl. We counted a total mean of 2897 individuals ranging from 5–16 individuals per group (mean = 8.8, SD = 2.5) within the sampling transects. Overall, the sighting encounter frequency of this monkey was 5.5 groups/km, while the relative mean population abundance was 48.2 individuals/km. Our study offers the first baseline information for future absolute abundance and population density estimates of black-and-white colobus monkeys and the forest patches they inhabit. Thus, this region should be considered as key habitat for future black-and-white colobus monkeys and other conservation initiatives. Establishment protected areas (national parks), improved law enforcement, population trend monitoring, and engagement with adjacent local communities are imperative to secure the long-term survival and conservation of black-and-white colobus monkeys and their habitats in the region. In addition, conservation measures like educational awareness programs, modern beekeeping, and alternative biofuel use should be initiated to stop further deforestation.

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Section: Discussionmentioning

confidence: 99%

Relative abundance and distribution of black-and-white colobus monkey (Colobus guereza guereza) and recommendations for its conservation in the northwestern Ethiopia

Kifle

Bekele

2022

Preprint

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“…81,92,93 Securing the long-term future of Pennant's red colobus requires committed involvement of the federal entities tasked with management of protected areas (the The red colobus group-sighting frequency is very low in the KNP, and there has been a clear and consistent decline in relative abundance. [94][95][96][97] Forest surveys suggest that red colobus monkeys may have been extirpated in forests outside and to the northeast of the KNP near the villages of Bajo and Mgbegati. 98,99 In the Oban Division of the CRNP, group-sighting frequency based on ranger patrol data in 2015 was also extremely low (0.001 groups/ km).…”

Section: Piliocolobus Pennantiimentioning

confidence: 99%

Red colobus (Piliocolobus) conservation action plan 2021-2026

Linder¹,

Cronin²,

Ting³

et al. 2021

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Ranging from forests in Senegal to the Zanzibar Archipelago, red colobus monkeys (Piliocolobus spp.) are the most threatened group of African monkeys. According to the IUCN Red List of Threatened SpeciesTM in 2020, every form of red colobus monkey is threatened with extinction, and 14 of the 18 taxa (>75%) are listed as Critically Endangered or Endangered. Despite their conservation status, only a few populations have been studied in any detail and the general public is largely unaware of these monkeys and their plight. Following over two decades of calls to prioritise red colobus conservation efforts, this publication finally brings together the knowledge of experts on these monkeys and African wildlife conservation to identify the populations in most urgent need of conservation and to develop priority conservation actions for each taxon and across the red colobus’ geographic range.

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Relative abundance and distribution of black-and-white colobus monkey (Colobus guereza guereza) in northwestern Ethiopia

Kifle,

Bekele

2023

Eur J Wildl Res

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Population Status of the Critically Endangered Preuss’s Red Colobus Monkey (Piliocolobus preussi Matschie 1900) and Recommendations for Its Conservation

Cited by 6 publications

References 34 publications

Relative abundance and distribution of black-and-white colobus monkey (Colobus guereza guereza) and recommendations for its conservation in the northwestern Ethiopia

Relative abundance and distribution of black-and-white colobus monkey (Colobus guereza guereza) and recommendations for its conservation in the northwestern Ethiopia

Red colobus (Piliocolobus) conservation action plan 2021-2026

Relative abundance and distribution of black-and-white colobus monkey (Colobus guereza guereza) in northwestern Ethiopia

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