Status of populations of gum and resin bearing and associated woody species in Benishangul-Gumuz National Regional State, western Ethiopia: implications for their sustainable management

Yilma, Zewdu; Worku, Adefires; Mohammed, Omarsherif; Girma, Adane; Dejene, Tatek; Eshete, Abeje; Teketay, Demel; Teshome, Mindaye; Tadesse, Wubalem

doi:10.1080/14728028.2015.1067153

Cited by 6 publications

(9 citation statements)

References 17 publications

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“…B. papyrifera was one of the most frequent species in the study area. Similar results were also reported in the Benshangul-Gumz region, Abergelle district [13,30]. They reported that B. papyrifera was first frequent species.…”

Section: Frequencysupporting

confidence: 85%

Population Status of Boswelia papyrifera dominated woodland in North West Ethiopia

Nigus,

Wasie

2024

Preprint

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The three main genera that produce gum and resin in Ethiopia's lowland forests are Acacia, Boswellia, and Commiphora. Boswellia papyrifera is mainly found in the degraded drylands that are dispersed across many regions of Ethiopia. The purpose of the study was to evaluate the resource status of the northern Ethiopian area of Burie Zuria, which is home to woods dominated by Boswellia papyrifera. Determining the district's Boswellia papyrifera-dominated woodland's regeneration status and quantifying the population structure of the existing species are among the objectives of the study. From 25mx25m, 5mx5m and 1mx1m size plots, tree, sapling and seedling were collected respectively and the collected data was analyzed through a descriptive statistics. According to the findings, the target species, Boswellia papyrifera, had a bell-shaped population structure and a fair regeneration status. Its population structure dominated woods in both the DBH and height class distribution, exhibiting an inverted "J" form. Some species such as Boswelia papyrifera (51.2%), Lannea schimperi (18.06%), and Erythroxylum fischeri (17.6%) had large important value index. The results conclude that the regeneration status and population structures of majority species indicate there is disturbances effect within the area. The finding showed that the population structure of large IVI species was bell-shaped so to sustain such species regular monitoring and conservation activities should be implemented and the finding revealed that the regeneration status of majority species within woodland were fair means there is an anthropogenic disturbance so to minimize such disturbances effect participatory forest management activities should be implement.

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Section: Frequencysupporting

confidence: 85%

Population Status of Boswelia papyrifera dominated woodland in North West Ethiopia

Nigus,

Wasie

2024

Preprint

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“…In the study area, density was lower than those reported from other woodland like Hamer (1804 ha -1 ) individuals [3], Tara Gedam (3,001 individuals ha -1 ) and Abebaye (2,850 individuals ha -1 ) [24]. But, its density was found to be higher than Sherkole and Guba, 488 and 256 stems per ha respectively [20] and woodlands (376.86 individuals ha -1 ) [25] in Ethiopia. The difference in the density of woody species can be due to altitudinal gradients and habitat suitability of different woody species forming the forest as well as the extent of anthropogenic influences [26].…”

Section: Density Frequencyand Dominancecontrasting

confidence: 60%

“…Present study revealed that Kara forest is floristically poor compared with other forest lands like Gra-Kahsu [18]. However, it is more or less comparable with Borana woodland [8] and better than Gambella low land [19], South Omo zone [3] and Benishangul-Gumuz [20] forests. Vegetation with a high extent of human disturbance due to encroachment shows relatively fewer species number than others [21].…”

Section: Floristic Compositionmentioning

confidence: 91%

Woody Species Diversity and Composition of Dry Woodland Vegetation in West Shewa, Central Ethiopia: Implications for Their Sustainable Management

Demie¹

2019

AJAF

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The dry land forest of Ethiopia possesses diverse tree species that are known for their ecological and economic values. Despite growing recognition of environmental and economic benefits of these species, the woodland harbouring these species is degrading. Adequate knowledge on the resource base including the current status of its population is crucial for sustainable management of the forest resource. Therefore, this study was carried out to investigate the diversity and composition of woody species in Kara dry lands forest. A total of 90 quadrants were established along transect lines. A 400 m 2 quadrants was used, distance between quadrants and transecting lines were 200 m and 500 m respectively. Species diversity and evenness, density, frequency, important value and regeneration status were assessed. This study reveals total of 48 woody species representing 23 families and 31 genera's were found. Out of that, 13 woody species were identified as gum and resin bearing species. The genus of Commiphora and Acacia species were found to be the dominant gum and resin bearing species at the study area. Diversity of the entire woody species assemblage and of the gum-and resin-bearing species was H= 3.47 and H= 2.3 respectively. The evenness values of entire and gum and resin producing woody species were 0.67 and 0.77 respectively. The gum and resin producing woody species accounted for 44.56% of the density, 49.87% of the basal area and 45.49% of the Importance Value Index. However, we recorded the declining natural regeneration of most gum-and resinbearing woody species except for a small number of species, which exhibited signs of healthy populations. Generally, the results of the present study highlighted the absence of conservation actions that will probably be subject to a progressive decline of gum and resin bearing species because of uncontrolled grazing, charcoal production and shifting cultivation. Therefore, proper management plan and domestication of the species through artificial regeneration and area closure are urgently needed.

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“…in western Ethiopia (28 spp. and 22 genera) (Yilma et al, 2015). However, the study area in MNR exhibited lower species richness of woody species compared with reports from studies in the Sudanian savanna in Burkina Faso (Savadogo et al, 2007), dryland forests and woodlands in Ethiopia (Woldemariam et al, 2000;Senbeta and Teketay, 2003;Zegeye et al, 2006Zegeye et al, , 2011Alelign et al, 2007;Worku et al, 2012) as well as woodlands and forests in South Africa (Dovie et al, 2008), Tanzania (Louga et al, 2000;Banda et al, 2008), and Uganda (Nangedo et al, 2006;Kalema, 2010).…”

Section: Discussionmentioning

confidence: 64%

“…The total density of woody species recorded in MNR is higher than those reported for Shorobe, Island Safari Lodge and Xobe in Northern Botswana (Neelo et al, 2013;Neelo et al, 2015) as well as a nature reserve forest (Senbeta and Teketay, 2003) and dryland forests and woodlands (Zegeye et al, 2006(Zegeye et al, , 2011Alelign et al, 2007;Worku et al, 2012;Yilma et al, 2015) in Ethiopia. However, it was much lower than a dry Afromontane forest (Woldemariam et al, 2000) in Ethiopia.…”

Section: Discussionmentioning

confidence: 67%

Diversity, stand structure and regeneration status of woody species, and spatial cover of herbaceous species in Mokolodi Nature Reserve, Southeastern Botswana

Teketay¹,

Geeves²,

Kopong³

et al. 2016

Int. J. Biodivers. Conserv.

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Diversity of woody and herbaceous species, stand structure and regeneration status of woody species, spatial cover of the herbaceous species as well as nutritional values of woody and herbaceous species were studied in Mokolodi Nature Reserve (MNR), Botswana. Ten 1 ha quadrats were used to collect data, and in each quadrat, ten 1 m 2 plots were used to estimate the spatial cover of herbaceous species. MNR exhibited high species, genera and family richness, but low diversity and eveness. The diversity and eveness values of woody species were 1.44 and 0.38, respectively. Density of woody species was about 4,785 ha -1 . Most of the woody species demonstrated unstable population structures and hampered natural regeneration. The spatial cover of all herbaceous species was only 44.67% ha -1 . The nutritional values of the species ranged between low and high while there was no information on the nutrtion values for 16 and 55% of the woody species and herbaceous species, respectively. The dominance values of woody species indicate inadequate number of big-sized trees, and that MNR is still at the recovery phase. For 68% of the woody species, natural regeneration is hampered. Future research topics and recommendations on the future management of MNR are proposed.

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Status of populations of gum and resin bearing and associated woody species in Benishangul-Gumuz National Regional State, western Ethiopia: implications for their sustainable management

Cited by 6 publications

References 17 publications

Population Status of Boswelia papyrifera dominated woodland in North West Ethiopia

Population Status of Boswelia papyrifera dominated woodland in North West Ethiopia

Woody Species Diversity and Composition of Dry Woodland Vegetation in West Shewa, Central Ethiopia: Implications for Their Sustainable Management

Diversity, stand structure and regeneration status of woody species, and spatial cover of herbaceous species in Mokolodi Nature Reserve, Southeastern Botswana

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