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Plant community and ecological analysis of woodland vegetation in Metema Area, Amhara National Regional State, Northwestern Ethiopia

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Abstract

We studied woodland vegetation in broad-leaved deciduous woodlands of Metema in northwestern Amhara regional state, Ethiopia to determine plant community types and species distribution patterns and their relationships with environmental variables, including altitude, pH, cation exchange capacity, electrical conductivity (EC), and moisture. We used a selective approach with a systematic sampling design. A total of 74 quadrats, each 25m × 25m at intervals of 150–200 m were sampled along the established transect lines. For herbaceous vegetation and soil data collection, five subquadrats each 1m × 1m were established at the four corners and the center of each quadrat. Three community types were identified using TWINSPAN analysis. All three community types showed high diversity (Shannon-Weiner index), the highest in community type II at 3.55. The highest similarity coefficient was 0.49 (49%) between community types II and III, reflecting 0.51 (51%) dissimilarity in their species richness. The canonical correspondence ordination diagram revealed that the distribution pattern of community type I was explained by moisture while that of community types III and II was explained by EC and altitude and moisture, respectively. Altitude was the most statistically significant environmental variable, followed by moisture and EC in determining the total variation in species composition and distribution patterns while pH and cation exchange capacity were non significant. In conclusion, we recommend that any intervention should take into account these three discrete community types and their environmental settings to make the intervention more successful.

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Authors and Affiliations

  1. Ethiopian Institute of Agricultural Research, Debre Zeit Agricultural Research Center, P.O.Box 32, Debre Zeit, Ethiopia

    Haile Adamu Wale

  2. Faculty of Life Sciences, Addis Ababa University, P.O.Box 1176, Addis Ababa, Ethiopia

    Tamrat Bekele

  3. Institute of Biodiversity Conservation, P.O.Box 80119, Addis Ababa, Ethiopia

    Gemedo Dalle

Authors
  1. Haile Adamu Wale
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  2. Tamrat Bekele
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  3. Gemedo Dalle
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Correspondence to Haile Adamu Wale.

Additional information

Foundition project: The study was supported by Special Fund for Public Welfare Technology Research of Agricultural Industry (200903014).

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Wale, H.A., Bekele, T. & Dalle, G. Plant community and ecological analysis of woodland vegetation in Metema Area, Amhara National Regional State, Northwestern Ethiopia. Journal of Forestry Research 23, 599–607 (2012). https://doi.org/10.1007/s11676-012-0300-2

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  • DOI: https://doi.org/10.1007/s11676-012-0300-2

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