Feeding and Ranging ecology of Colobus guereza gallarum in Bale Mountains National Park, Southeast Ethiopia

Petros, Israel; Mekonen, Sefi; Gena, Hussein; Mesfin, Yared

doi:10.4172/2332-2543.s2-007

Cited by 4 publications

(10 citation statements)

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“…Fruits and flowers were the least consumed food items during the observation time. These results are agreed with the discoveries of Petros et al (2018) stated that, of the overall diet of C. g. gallarum 82% leaves, 14% Fruits and 2% shoots and flowers were the least consumed food items during the observation time. My result is also in agreement with another study on other Guereza species/subspecies conducted in other areas as it shows that plant leaves constitute much of the guereza diet .…”

Section: Discussionsupporting

confidence: 92%

“…In total C. g. gallarum in Harenna forest was foraged from 19 plant species. Out of these food plant species in my study, 5 species were the same as Hussen and Ejigu (2017) study in Gidabo Forest and 7 plants were similar with Petros et al (2018) study in Bale Mountains National Park. The total 19 plant species identified throughout the study period as being consumed by C. g. gallarum was higher compared to the findings of Hussen and Ejigu (2017) (15 species) and Petros et al (2018) (8 species).…”

Section: Discussionsupporting

confidence: 84%

“…Out of these food plant species in my study, 5 species were the same as Hussen and Ejigu (2017) study in Gidabo Forest and 7 plants were similar with Petros et al (2018) study in Bale Mountains National Park. The total 19 plant species identified throughout the study period as being consumed by C. g. gallarum was higher compared to the findings of Hussen and Ejigu (2017) (15 species) and Petros et al (2018) (8 species). Nonetheless, the difference in the number of plant species reported as consumed by C. g. gallarum in the study area and the former might be due to the duration of study periods and the availability of foraging plants.…”

Section: Discussionsupporting

confidence: 84%

“…In the absence of recent survey work, it is not known how much pressure these populations are under and therefore it is currently listed as Data Deficient on the IUCN Red List as recorded in the 1960s (Arkive 2011). The only population estimate so far has been carried out only in Bale Mountains National Park (Petros et al, 2018). Furthermore, the total population size of C. g. gallarum has never been estimated and their distribution pattern has never been thoroughly mapped (Petros et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…The only population estimate so far has been carried out only in Bale Mountains National Park (Petros et al, 2018). Furthermore, the total population size of C. g. gallarum has never been estimated and their distribution pattern has never been thoroughly mapped (Petros et al, 2018). Given the lack of knowledge concerning the subspecies and the conservation priorities linked to its future existence in Ethiopia, this study aimed to 1) determine the abundance, distribution and group size of populations of C. g. gallarum within forest patches in Harenna and 2) examine the differences in diet, foraging behavior of C. g. gallarum the occupied patches.…”

Section: Introductionmentioning

confidence: 99%

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Population Size, Group Composition and Feeding Ecology of the Endemic and Endangered Colobus guereza gallarum in Harenna Forest, Harenna Buluk District, South East Ethiopia

Mekonen

Hailemariam

2021

Egyptian Academic Journal of Biological Sciences, B. Zoology

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Population size, group composition and feeding ecology of the endemic and endangered Black-and-White Colobus Monkey (Colobus guereza gallarum) was investigated in Harenna Forest, South East Ethiopia by using the line-transect method in 10 selected blocks. During the dry and wet seasons, a mean number of 212 and 246 C. g. gallarum individuals was recorded, respectively. Also, the number of groups of the animal was higher in wet (36) than dry (31) season, but statistically insignificant (P= 0.447). Out of the recorded C. g. gallarum, 25.98% were adult males; 32.53% adult females; 14.85% sub-adult male, 11.14% sub-adult female and 15.50% were juveniles/young. Young leaves were the largest (35.1%) contributor to the diet of guereza followed by shoots (22.1%) in both seasons. Other common items were included mature leaves (20.6 %), bark (17.7%), fruit (2.8%) and flower (1.7%). C. g. gallarum were observed feeding on 19 plant species belonging to 12 families. The highest contribution of the diet was from the family Rosaceae (41.67%), while family Fabaceae, Moraceae and Myrsinaceae were contributing 50% of the diet. Schefflera volkensii was the most consumed plant species which accounted for 7.96%, followed by Urera hypselodendron (7.83%) and Dombeya torrida (7.06%). Moreover, C.g.gallarum mainly forage on leaves particularly young leaves, and their foraging activities depend inside the forest. Thus, to maintain sustainable conservation of the endemic C.g.gallarum in the area, their habitats should be properly protected, and appropriate monitoring strategies should be designed.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 84%

Section: Discussionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Population Size, Group Composition and Feeding Ecology of the Endemic and Endangered Colobus guereza gallarum in Harenna Forest, Harenna Buluk District, South East Ethiopia

Mekonen

Hailemariam

2021

Egyptian Academic Journal of Biological Sciences, B. Zoology

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Population Status, Diurnal Activity Pattern, Feeding Ecology, and Habitat Association of Colobus Monkey (Colobus guereza) in Saja Forest, Kaffa Zone, Southwest Ethiopia

Mola

Ayiza

Asnakew

et al. 2022

International Journal of Ecology

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Colobus monkeys (Colobus guereza) are endemic to the Ethiopian plateau, distributed in different ecological habitats such as moist and deciduous forests, savanna woodlands, and montane forests. The population status, diurnal activity pattern, feeding ecology, and habitat association of Colobus guereza were investigated in Saja Forest, southwest Ethiopia, from June 2019 to February 2020, covering both wet and dry seasons. A total of 39 different types of transect were systematically established, distributed in both dense forest and in shrubland. Data were collected for 60 days in total across a wet and a dry season, both at dawn and in the afternoon. A total of 246 ± 39.1 individuals were recorded, of which 132 ± 24.4 and 114 ± 14.7 individuals were recorded during the wet and dry seasons, respectively. The population and group sizes did not statistically differ between the wet and dry seasons but shrubland habitat had fewer individuals and smaller groups than forest. Out of the recorded Colobus guereza, 33.5% were adult males, 34.5% were adult females, 28% were sub-adult males, 14.5% were sub-adult females, and 12.5% were juveniles/young. Feeding (29.5%) and resting (19.5%) were the most recorded daily activities for Colobus guereza. Young leaves were the largest (31%) contributor to the diet followed by mature leaves (22%) in both seasons. Other common dietary items were shoots (20%), barks (13%), fruits (11%), and flowers (3%). Colobus guereza were observed feeding on a diverse diet of 26 plant species belonging to 21 genera within 21 families. The habitats of these primates are currently diminishing due to anthropogenic activities such as agricultural expansion, human settlement, livestock grazing, and other forms of human wildlife conflict. Furthermore, guerezas are hunted for their skin and are also major sources of meat for the Menja people in the study area. Therefore, awareness creation for local people towards wildlife conservation is needed.

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The role of Dodola Community Conservation Area for large mammal conservation, Ethiopia

Mekonnen,

Girma

2023

BMC Res Notes

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The role of community conservation areas for large mammals is rarely evaluated. We investigated the species richness and frequency of sightings of large mammals in the Dodola Community Conservation Area. The study area was stratified into three habitat types, and 49 lines transect was laid (27 Dry evergreen Afromontane forests, 20 Sub-afro-alpine habitats, and 2 plantation forests) based on the topography, land use, and vegetation cover of the study area. A total of 24 species of large mammals were identified and recorded in the study area. Though the community conservation area is home to diverse species of mammals, including some endemic and endangered ones such as mountain nyala and Bale Monkey, human encroachment, agriculture, and overgrazing are prominent in the area, putting huge pressure on flora and fauna. Therefore, we recommend the participatory approach be strengthened to ensure sustainable coexistence between people and wildlife.

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Feeding and Ranging ecology of Colobus guereza gallarum in Bale Mountains National Park, Southeast Ethiopia

Cited by 4 publications

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Population Size, Group Composition and Feeding Ecology of the Endemic and Endangered Colobus guereza gallarum in Harenna Forest, Harenna Buluk District, South East Ethiopia

Population Size, Group Composition and Feeding Ecology of the Endemic and Endangered Colobus guereza gallarum in Harenna Forest, Harenna Buluk District, South East Ethiopia

Population Status, Diurnal Activity Pattern, Feeding Ecology, and Habitat Association of Colobus Monkey (Colobus guereza) in Saja Forest, Kaffa Zone, Southwest Ethiopia

The role of Dodola Community Conservation Area for large mammal conservation, Ethiopia

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