Abstract
BACKGROUND: Bengi Forest, located in Southwest Ethiopia, is an ecologically important remnant forest known for its rich plant diversity and distinct vegetation patterns. Despite its ecological significance, the forest is under increasing threat due to farmland expansion, human settlement, and overgrazing. These pressures have led to significant degradation, highlighting the urgent need for detailed studies that evaluate the forest's floristic composition, structural attributes, and regeneration capacity. METHODS: Vegetation data were collected using a systematic sampling approach. Six transect lines were laid out across the forest in a west-to-east direction, spaced 200 m apart. Along these transects, 20 m × 20 m (400 m²) plots were established at 200-meter intervals to record data on trees and lianas. Each main plot contained five nested subplots (one in each corner and one at the center) to assess shrubs, herbaceous species, and the regeneration status of woody plants. Measurements of diameter at breast height (DBH), tree height, and species cover abundance were obtained using a tape measure, calibrated stick, and visual estimation, respectively. Species diversity and similarity between vegetation communities were evaluated using the Shannon-Wiener Diversity Index and Sørensen's Similarity Index. RESULTS: A total of 129 plant species representing 78 genera and 54 families were identified. The Fabaceae family showed the highest diversity, with 13 species, followed by Asteraceae (10 species) and Euphorbiaceae (9 species). The overall stem density was recorded at 2,041.33 stems per hectare. Syzygium guineense was the most frequently encountered species, present in 93% of the sampled plots. Macaranga capensis had the highest basal area (14.67 m²/ha), while Croton macrostachyus exhibited the highest Importance Value Index (IVI) at 18.62%. The Shannon diversity index for the forest was 3.8, with an evenness value of 0.87, indicating a relatively balanced species distribution. Three distinct plant community types were identified: (I) Schefflera abyssinica-Syzygium guineense, (II) Croton macrostachyus-Pouteria adolfi-friederici, and (III) Millettia ferruginea-Albizia gummifera. A high level of similarity (Sørensen's index = 0.89) was observed between community types I and II. Species with low IVI scores, such as Phoenix reclinata, Ficus ovata, Ehertia cymosa, and Dracaena steudneri, should be prioritized for conservation to maintain biodiversity and ecosystem stability. CONCLUSION: The forest exhibits a generally positive regeneration trend, suggesting potential for ecological recovery. However, selective cutting and uncontrolled grazing are causing notable ecological disturbances. These findings emphasize the need for targeted conservation strategies, including the promotion of alternative energy sources to reduce pressure on forest resources. Furthermore, future research should explore additional environmental variables influencing forest dynamics to inform comprehensive management approaches.
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Claims 13
Claim · model-written summary
The forest contained 129 plant species in 78 genera and 54 families.
Verbatim
e0“RESULTS: A total of 129 plant species representing 78 genera and 54 families were identified.”
Claim · model-written summary
Fabaceae comprised 13 species.
Verbatim
e0“The Fabaceae family showed the highest diversity, with 13 species, followed by Asteraceae (10 species) and Euphorbiaceae (9 species).”
Claim · model-written summary
Asteraceae comprised 10 species.
- Taxon
- AsteraceaeAsteraceaee0
- Outcome
- speciese0
- Value
- 10 speciese0
Verbatim
e0“The Fabaceae family showed the highest diversity, with 13 species, followed by Asteraceae (10 species) and Euphorbiaceae (9 species).”
Claim · model-written summary
Euphorbiaceae comprised 9 species.
- Taxon
- EuphorbiaceaeEuphorbiaceaee0
- Outcome
- speciese0
- Value
- 9 speciese0
Verbatim
e0“The Fabaceae family showed the highest diversity, with 13 species, followed by Asteraceae (10 species) and Euphorbiaceae (9 species).”
Claim · model-written summary
Overall stem density was 2,041.33 stems per hectare.
Verbatim
e0“The overall stem density was recorded at 2,041.33 stems per hectare.”
t0“Bengi forest”
Claim · model-written summary
Syzygium guineense occurred in 93% of plots.
- Taxon
- Syzygium guineense
Syzygium guineensee0 - Outcome
- most frequently encountered speciese0
- Value
- 93%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Syzygium guineense was the most frequently encountered species, present in 93% of the sampled plots.”
Claim · model-written summary
Macaranga capensis had the greatest basal area, 14.67 m²/ha.
- Taxon
- Macaranga capensis
Macaranga capensise0 - Outcome
- basal areae0
- Value
- 14.67 m²/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Macaranga capensis had the highest basal area (14.67 m²/ha), while Croton macrostachyus exhibited the highest Importance Value Index (IVI) at 18.62%.”
Claim · model-written summary
Croton macrostachyus had the highest IVI, 18.62%.
- Taxon
- Croton macrostachyus
.jpg?width=60)
Croton macrostachyuse0 - Outcome
- Importance Value Index (IVI)e0
- Value
- 18.62%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Macaranga capensis had the highest basal area (14.67 m²/ha), while Croton macrostachyus exhibited the highest Importance Value Index (IVI) at 18.62%.”
Claim · model-written summary
Forest Shannon diversity was 3.8 and evenness was 0.87.
Verbatim
e0“The Shannon diversity index for the forest was 3.8, with an evenness value of 0.87, indicating a relatively balanced species distribution.”
Claim · model-written summary
Three plant community types were identified.
Verbatim
e0“Three distinct plant community types were identified: (I) Schefflera abyssinica-Syzygium guineense, (II) Croton macrostachyus-Pouteria adolfi-friederici, and (III) Millettia ferruginea-Albizia gummifera.”
Claim · model-written summary
Community types I and II had Sørensen similarity of 0.89.
Verbatim
e0“A high level of similarity (Sørensen's index = 0.89) was observed between community types I and II.”
t0“Bengi forest”
Claim · model-written summary
The forest showed a positive regeneration trend.
Verbatim
e0“CONCLUSION: The forest exhibits a generally positive regeneration trend, suggesting potential for ecological recovery.”
Claim · model-written summary
Selective cutting and grazing disturbed the forest.
Verbatim
e0“However, selective cutting and uncontrolled grazing are causing notable ecological disturbances.”
t0“Bengi forest”