Structure and regeneration status of woody plants in the Hallideghie wildlife reserve, North East Ethiopia

Endris, Ahmed; Seid, Awol; Asefa, Addisu

doi:10.5897/ijbc2017.1085

Cited by 9 publications

(8 citation statements)

References 17 publications

(17 reference statements)

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“…This might be associated with the selective cutting of species for fuel wood collection, local house building (hat house), charcoal production and others. Similar results were observed in [21] [42] [43] [44] [45].…”

Section: Discussionsupporting

confidence: 92%

“…This might be species are harvested at an early growth stage by the local people for charcoal production, live fence and construction of houses. Several studies were reported in the different region of Ethiopia for [46] in the Sheko forest; [43] in the Hallideghie wildlife reserve; [47] Vegetation Ecosystem of Ethiopia; [44] in the boda dry evergreen Montana forest; [48] in the rangeland of Southeast Ethiopia and [49] in the Kimphe Forest.…”

Section: Discussionmentioning

confidence: 99%

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Vegetation Structure and Regeneration Status of the Western Escarpment of the Rift Valley of the Gamo Zone, Southern Ethiopia

Dingamo¹,

Takele²,

Woldu³

et al. 2022

OJE

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Understanding the structure and regeneration of forest resources contributes to identifying the elements of diversity, endemism, threatened and endangered species. This study was conducted in the western escarpment of the Rift valley of the Gamo Zone, Southern Ethiopia. The main objective was to investigate structure and regeneration status of the study area. A systematic sampling method was used to collect vegetation data from a total 102 quadrats, each 20 × 20 m (400 m 2 ) and five 1 × 1 m (1 m 2 ) sub-quadrats were established at the four corners and at the centre for sapling and seedling estimation. Tree and shrub species were listed; Height (H ≥ 1.5 m) and DBH ≥ 2 cm were measured and recorded. R-statically software and Microsoft Excel were used to record and analyse the data. A total of 126 plant species belonging to 43 families and 90 genera were identified. The most dominant families were Fabaceae, followed by Anacardiaceae and Euphorbiaceae. Most frequent species were Euclea divinorum (84.3%), followed by Rhus natalensis (83.3%), Terminalia brownii (74.5%). DBH class ≤ 5cm had highest density (63.6%) and DBH ≥ 25.1 cm had the lowest density (0.87%). Three population patterns have been observed; inverted J, J-shaped and irregular shaped. 93% of species had IVI values b/n 1 -4, 65% of species IVI values < 1% and 7% of species had IVI values ≥ 5.28. Pappea capensis, Combretum molle, Terminalia brownii, Euclea divinorum had highest IVI values. In the vertical stratification, lower story was 91.3% of the individuals. Only a few species contributed to the high density of saplings (440.2/ha) and seedlings (825.49/ha) while most had very little or no saplings and seedlings at all. Thus, in order to revert the current forest structure and regeneration to the previous natural state, it

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Vegetation Structure and Regeneration Status of the Western Escarpment of the Rift Valley of the Gamo Zone, Southern Ethiopia

Dingamo¹,

Takele²,

Woldu³

et al. 2022

OJE

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“…Furthermore, S. persica and C. rotundifolia under non-invaded woodlands showed good regeneration in the study areas. In contrast to our findings, the findings of Endris et al [52] showed that P. juliflora under P. juliflora mixed with native species stands and A. mellifera under non-invaded woodlands showed good regeneration profiles in the Hallideghie wildlife reserve, Northeast Ethiopia. Furthermore, the density of seedlings for P. juliflora and A. tortilis under P. juliflora mixed with native species stands, non-invaded woodlands, and P. juliflora thicket also showed inconsistent patterns of densities in comparison to reports by Muturi et al [29] that show higher densities in comparison to trees and saplings.…”

Section: P Juliflora Invasion Levels and Size Class Structures Of Secontrasting

confidence: 99%

Effects of invasion level ofProsopis julifloraon native species diversity and regeneration in Afar region, Northeast Ethiopia

Shiferaw

2021

Preprint

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The study aimed to assess (i) the effects of Prosopis juliflora invasion on the diversity of plant species, and floristic composition at Awash Fentale and the Amibara districts of the Afar region and (ii) the effects of P. juliflora invasion on the regeneration potential of native woody species. Sample collection was performed in habitats of P. juliflora thicket, P. juliflora mixed with native species stands, non-invaded woodlands, and open grazing lands. A stratified random sampling technique was used for data collection. Among species of plants, the highest proportion of species, 87 (27.4%), was recorded under non-invaded woodlands, but the lowest proportion of species, 70 (22%), was recorded under open grazing lands. The invasion level of P. juliflora caused significantly reduced Shannon diversity index. The mean values of Shannon diversity index and species richness under P. juliflora mixed with native species (H´=2.22, R=14) and non-invaded woodlands (H´=2.23, R=13) were significantly higher than P. juliflora thicket (H´=1.96, R=12) and open grazing lands (H´=1.84, R=10). In this study, 102 trees ha -1 native woody species were recorded under P. juliflora thicket, but 1252 trees ha -1 native species were recorded under non-invaded woodlands. If the present effects of the invasion of P. juliflora on native species diversity were to continue coupled with a drier climate, plant diversity of the Afar flora region will be highly affected. As a result the ecosystem services will be under threat. Thus, the participation of all stakeholders and multidisciplinary research approaches should be designed for the management of invaded rangelands to reverse the situation.

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“…We also found that Shannon diversity index was more drastically decreased in the SP forest than the MP and BP forests and such traits are common patterns found in forest areas affected by human activity. The results are consistent with previous reports, such as Endris et al (2017); Kacholi (2014) that increasing tree size classes results in a drastically decreased number of species and Shannon diversity index. Basal area and AGC were increased from smaller to bigger size classes in the BP and MP forests (Goode et al 2020).…”

Section: Size Class Distributionsupporting

confidence: 93%

Forest structures and carbon stocks of community forests with different forest management in Maha Sarakham Province, Thailand

WANNASINGHA

GOMONTEAN²,

UTTARUK³

2023

Biodiversitas

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Abstract. Wannasingha W, Gomontean B, Uttaruk Y. 2023. Forest structures and carbon stocks of community forests with different forest management in Maha Sarakham Province, Thailand. Biodiversitas 24: 799-809. Forest management comprises strategies and practices to regulate human activities and the utilization of forest products. Management and regulations have various effects on forest structure, tree diversity and carbon accumulation. This study was conducted in three community forests with different levels of rule regulations and managed duration in the northeast of Thailand. Thirty of 20×20 m plots were placed for recording all trees with diameter at breast height (dbh) ?4.5 cm and >1.3 m height. One hundred and fifty plots of soil samples at 0-25 cm and 25-50 cm depths were also collected for organic carbon analysis. Forest carbon stocks were calculated from the sum of carbon in aboveground biomass (AGB) and soil organic carbon (SOC). The results showed that tree density, basal area, Shannon diversity index and evenness index of the best practices (BP) plots were higher than the plots in which moderate (MP) and slight practices (SP) were applied. Tree heights of the BP and MP forests were higher than the SP forest. The L-shape of dbh class distribution in all community forests means they were secondary forests; tree density was highest in the small dbh class and declined in the bigger size class. The bigger dbh class tree showed higher aboveground carbon (AGC) despite the lower tree density in all community forests. Most of the BP forest plots had the highest carbon stock (93.89, 80.52 and 54.96 Mg C ha-1) and CO2 absorption (344.25, 295.23 and 201.53 Mg CO2equiv.) compared with the others. Our results demonstrate the importance of forest management in affecting forest structures, carbon sequestration and carbon dioxide absorption from the atmosphere to reduce and mitigate climate change.

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Structure and regeneration status of woody plants in the Hallideghie wildlife reserve, North East Ethiopia

Abstract: In this study, we examined vegetation structure and regeneration status of woody plants in the Hallideghie wildlife reserve, Ethiopia. We collected data on abundance, height and diameter at breast height (

Cited by 9 publications

References 17 publications

Vegetation Structure and Regeneration Status of the Western Escarpment of the Rift Valley of the Gamo Zone, Southern Ethiopia

Vegetation Structure and Regeneration Status of the Western Escarpment of the Rift Valley of the Gamo Zone, Southern Ethiopia

Effects of invasion level ofProsopis julifloraon native species diversity and regeneration in Afar region, Northeast Ethiopia

Forest structures and carbon stocks of community forests with different forest management in Maha Sarakham Province, Thailand

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