A total of 158 plant species belonging to 115 genera, 56 families, and 80 species (51%) trees, 26 (16%) shrubs, 19 (12%) herbs, and 33 (21%) lianas were identified and recorded. The diameter at breast height (DBH), frequency, basal area, importance value index (IVI), and density were used for vegetation structure description and regeneration. Individual tree and shrub DBH ≥ 5 cm were measured and counted. The vegetation data were collected systematically in 140 plots with the size of 400 m2 for trees 25 m2 for seedlings, saplings, shrubs, and lianas and 1 m2 for herbs. The aim of this study was to analyse the species composition, structures, and regeneration of woody plant species and the impacts of site factors on the natural regeneration of tree species in four study sites of MFBR. Therefore, local and regional stakeholders should integrate and work together to develop and implement sound conservation and management strategies that encourage sustainable uses of the forest and its products. Based on the findings of this study some woody species require urgent conservation measures. This study revealed that small trees and shrubs dominated the forest, indicating that it is a secondary forest. Analysis of selected woody species showed diverse population structures. Altogether, 129 plant species belonging to 74 genera and 62 families were identified. Vegetation data such as DBH, height, seedling, and sapling density of woody species were recorded in each quadrat. For the inventory of seedling and sapling, two subplots of 2m × 5m were used at the beginning and the end of the baseline on opposite sides of the main quadrat. Quadrats of 20m × 20m were used to record DBH and the height of all woody plant species reaching a DBH of ≥ 2 cm. Sixty-six (66) quadrats of 20m × 20m were laid at every 100 m interval between each quadrat and 300m apart between each line transect following the altitudinal gradient. A systematic sampling design was employed to collect vegetation data. This study was conducted in Menfeskidus Monastery Forest in Berehet district North Shoa Zone of Amhara Regional State, Central Ethiopia, to investigate the floristic composition, species diversity, vegetation structure, and regeneration status of the forest. The presence of endemic plant species in the study forest shows the potential of the area for biodiversity conservation.
The ANOVA test indicated that the five community types differ significantly from each other with regard to Electrical Conductivity and Potassium.ĭescription of floristic diversity of species in Gerba Dima forest revealed the presence of high species diversity and richness. RDA result showed altitude was the main environmental variable in determining the plant communities. Cluster analysis resulted in five different plant communities and this result was supported by the ordination result. Rubiaceae, Acanthaceae and Asteraceae were the richest family each represented by 11 genera and 11 species (6.11%), 9 genera and 11 species (6.11%), 6 genera and 11 species (6.11%), respectively of total floristic composition. Of these, 52 species (28.9%) were trees, 6 species (3.33%) were Trees/shrubs, 31 species (17.22%) were shrubs, 76 species (42.22%) were herbs, and 15 species (8.33%) were Lianas. One hundred and eighty plant species belonging to 145 genera, 69 families and comprising of 15 endemic species were recorded. Redundancy Analysis (RDA) ordination was used in describing the pattern of plant communities along an environmental gradient.
#Ivi meaning software#
Hierarchical (agglomerative) cluster analysis was performed using the free statistical software R version 3.6.1 using package cluster to classify the vegetation into plant community types. All woody plant species with Diameter at breast height (DBH) ≥ 2.5 cm and height ≥ 1.5 m were recorded in 25 m × 25 m plots. Nested plots were used to sample plants of different sizes and different environmental variables. Ninety sample plots having a size of 25 × 25 m (625 m ² ) were laid by employing stratified random sampling. Investigation of forest community composition and structure is very useful in understanding the status of tree population, regeneration, and diversity for conservation purposes. Identifying and interpreting the structure of species assemblages is the main goal of plant community ecology. This study was carried out in Gerba Dima Forest, South-Western Ethiopia, to determine the floristic composition, species diversity and community types along environmental gradients.
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