October 15, 2025 Thesis Open Access

ORGETA GEMEDA SHIRE

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    "description": "<p><strong>ABSTRACT</strong>: The Combretum-Terminalia woodland and wooded grassland vegetation type of Ethiopia is the peculiar woodland formation with diverse species composition that occurs mainly in the Southern, northern and northwestern low-lying periphery of the country. This study was carried out in the woodland vegetation in Abaya District, West Guji Zone, Southern Ethiopia aiming at studying the floristic composition, diversity, community structure and regeneration status. A preferential sampling technique was used to collect floristic, structural, and environmental data by focusing on vegetation homogeneity and patch size of the woodland. Sixty six 30\ud835\udc5a &times; 30\ud835\udc5a (900 m2) main Plots were laid to record and measure woody species with circumference of &gt;8cm and height &gt;2m. In each main plot, five subplots of 1m2 and 25 m2 were used to collect data of herbaceous plant species and soil samples, and seedlings and saplings of woody plant species, respectively. Shannon diversity, evenness, DBH &amp; Height classes, Density, Frequency, Basal Area, dominance, and IVI were computed. Hierarchical cluster analysis and Canonical correspondence analysis (CCA) with R software were used to identify plant communities and analyze the relationship between plant community types and environmental variables, respectively. A total of 172 species belonging to 137 genera and 57 families of vascular plants were documented. Out of these, Fabaceae and Asteraceae were the top dominant and species rich families, whereas herbs rather than grasses, Trees, and shrubs were predominant growth forms. The Shannon-Wiener diversity indices and evenness of woody species were H&rsquo;=3.00 and J&rsquo;=0.68, respectively, indicating relatively good diversity. Three plant communities were identified at the study area. These are Terminalia macroptera Maytenus addat community type, Berchemia discolor&ndash;Dichrostachys cinerea community type, and Euclea racemosa&ndash;Acokanthera schimperi community type. The CCA result revealed that the variation of species distribution and plant community formation were significantly related to altitude, disturbance, and slope. The overall DBH and height-classes distribution revealed an inverted J-shaped pattern. The total density of woody plant species was found to be 1058.42 stems ha-1, while the basal area was 28.65m2ha-1. Combretum molle, Combretum collinum, Lannea schimperi, Terminalia macroptera, Rhus natalensis and Rhus vulgaris were the top dominant and important species with high IVI. The analysis of individual woody species DBH classes distribution showed six different population structure patterns. The density of seedlings, saplings, and mature stems of woody plant species were 737.78 stems ha-1, 306.6 stems ha-1, and 1058.42 stems ha-1, respectively. With these densities, the regeneration of the woodland vegetation of the study area falls under the fair regeneration. In conclusion, the estimated values of vegetation composition (i.e., the most dominance of herbs), structure and regeneration status of the woodland vegetation indicated that there were high anthropogenic disturbances in the study area. These findings would be instrumental and baseline for the development of successful restoration and rehabilitation strategies and programs for the woodland vegetation studied.</p>", 
    "language": "eng", 
    "title": "FLORISTIC COMPOSITION, DIVERSITY,  COMMUNITY STRUCTURE AND REGENERATION  STATUS OF WOODLAND VEGETATION IN ABAYA  DISTRICT, WEST GUJI ZONE, SOUTHERN ETHIOPIA", 
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      "university": "Dilla University", 
      "supervisors": [
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          "name": "ABREHAM ASSEFA (PhD)"
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    "keywords": [
      "Abaya woodland, Basal area, Community types, Diversity, Importance  value index,"
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    "publication_date": "2025-10-15", 
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