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Floristic diversity and regeneration status of woody plants in Zengena Forest, a remnant montane forest patch in northwestern Ethiopia

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Abstract

The study was conducted at Zengena forest, a fragmented remnant montane forest in northwestern Ethiopia, which surrounds Lake Zengena. The purpose was to assess the species composition, diversity and the regeneration status of woody plants. A total of 27 plots of 20 m × 20 m were sampled along the line transects laid down the altitudinal gradient from the edge of the forest encompassing the lake to the edge of the lake in eight aspects. In each plot, woody species were counted and the diameter at breast height and the height of trees and shrubs were measured. A total of 50 woody species belonging to 31 families were found, of which 17 (34%) were trees, 7 (14%) trees or shrubs, 23 (46%) shrubs and 3 (6%) lianas. The overall Shannon-Wiener diversity and evenness indices of woody species were 2.74 and 0.7, respectively. Clausena anisata had the highest relative density (23.5%), Rapanea rhododendroides the highest relative frequency (6.5%) and Prunus africana the highest relative dominance (45%) and importance value index (IVI, 51.6). The total basal area and density of woody plants were 22.3 m2·ha−1 and 2,202 individuals·ha−1, respectively. The population structure showed variations among woody plants and revealed varied regeneration patterns of different species. The importance value index and population structure revealed that some species are threatened and need prioritization for conservation measures. The results suggest that remnant forest patches in the highlands of northern Ethiopia host several woody plant species that are almost disappearing in other areas due to deforestation.

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Authors and Affiliations

  1. College of Science, Department of Biology, Bahir Dar University, P.O. Box 1817, Bahir Dar, Ethiopia

    Desalegn Tadele, Destaw Damtie & Adane Assefa

  2. Department of Plant Production, Ghent University, Coupure Links 653, Ghent, 9000, Belgium

    Ermias Lulekal

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  1. Desalegn Tadele
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  2. Ermias Lulekal
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  3. Destaw Damtie
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  4. Adane Assefa
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Correspondence to Desalegn Tadele.

Additional information

Fund project: This work is supported by Bahir Dar University Research and Community Service Office as a study grant (BDU/RCS/Sc/03/06) to the first author.

Corresponding editor: Zhu Hong

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Tadele, D., Lulekal, E., Damtie, D. et al. Floristic diversity and regeneration status of woody plants in Zengena Forest, a remnant montane forest patch in northwestern Ethiopia. Journal of Forestry Research 25, 329–336 (2014). https://doi.org/10.1007/s11676-013-0420-3

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  • DOI: https://doi.org/10.1007/s11676-013-0420-3

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