Vegetation structure and regeneration status of the moist, evergreen, afromontane Bore–Anferara–Wadera forest in southern Ethiopia

2019 ◽  
Vol 31 (3) ◽  
pp. 953-967
Author(s):  
Mesfin Woldearegay ◽  
Zerihun Woldu
Keyword(s):  
Vegetation Structure ◽  
Southern Ethiopia ◽  
Regeneration Status

scholarly journals Structure, Reproductive Biology, and Regeneration Status of Podocarpus falcatus (Thunb.) R. B. ex Mirb. in Bale Mountains, Southern Ethiopia

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Mesfin Woldearegay ◽  
Tamrat Bekele
Keyword(s):  
Reproductive Biology ◽  
Local Community ◽  
Southern Ethiopia ◽  
Population Status ◽  
Regeneration Status ◽  
Female Tree ◽  
Shape Pattern ◽  
Population Structures ◽  
Average Distribution ◽  
Study Species

This study was carried out in the Dodola forest, Southern Ethiopia, to investigate the structure, reproductive biology, and regeneration status of Podocarpus falcatus. Based on their disturbance status, two blocks each having an area of 16 ha (400 m × 400 m) were laid in the forest to collect vegetation data. 16 plots (100 m × 100 m) and 256 subplots (25 m × 25 m) were established in each block. The population status of Podocarpus falcatus (dbh ≥ 5 cm) was assessed in the 256 subplots. The regeneration status of Podocarpus falcatus was also assessed around 40 randomly selected female trees isolated at least 10 m from any other female tree in each block. A total of 1363 Podocarpus falcatus individuals were recorded, with an average distribution of 43 individuals ha−1 and a higher proportion of small-sized individuals. The population structures of Podocarpus falcatus in the two blocks were a typical inverted J-shape pattern, indicating good regeneration and recruitment status of the study species. Podocarpus falcatus had a good regeneration status in Dodola forest and also larger quantities of its seedlings were recorded under canopy shades suggesting that the species is shade tolerant. The density of seedlings and saplings was small within 4 m radius from the seed source (female trees) compared to that observed greater than 4 m distance. Thus, poor regeneration is observed within a 4 m radius around the female trees compared to distances greater than 4 m. Therefore, the local community and other responsible stakeholders should work together to stop and/or reduce the selective cutting of this ecologically and economically important tree species in the forest.

scholarly journals Woody Species Diversity, Vegetation Structure, and Regeneration Status of the Moist Afromontane Forest of Agama in Southwestern Ethiopia

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Abyot Dibaba ◽  
Teshome Soromessa ◽  
Alemayehu Kefalew ◽  
Admassu Addi
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Vegetation Structure ◽  
Woody Plant ◽  
Woody Species ◽  
Sampling Technique ◽  
Systematic Sampling ◽  
Woody Plant Species ◽  
Regeneration Status ◽  
Southwestern Ethiopia

This study was conducted in Agama Forest in Kafa Zone, Southwestern Ethiopia, to assess species diversity, vegetation structure, and regeneration status of woody species. A systematic sampling technique was employed to collect vegetation data. Sixty (60) sample plots of 25 m × 25 m were laid at 300 m intervals all along ten grids interspaced 800 m apart. Sample plots of 25 m × 25 m were used to record DBH and H of all woody plant species reaching a DBH >2.5 cm and height >2 m. For the inventory of seedling and sapling, two subplots of 2 m × 5 m were used at the beginning and the end of the baseline on opposite sides of the main quadrat. Vegetation data such as DBH, height, seedling, and sapling density of woody species were recorded in each plot. Altogether, 72 woody plant species of 65 genera and 35 families were identified. Analysis of selected tree species showed diverse population structures. This study showed that small trees and shrubs dominated the Agama Forest, which revealed its status under a secondary regeneration stage. Study on the structure and regeneration of some woody species indicated that there are species that require urgent conservation measures. Sound management and monitoring, as well as maintenance of biodiversity and cultural and economic values of the forest, require conservation activities that encourage sustainable uses of the forest and its products.

scholarly journals Floristic Composition, Vegetation Structure, and Regeneration Status of Woody Plant Species of Oda Forest of Humbo Carbon Project, Wolaita, Ethiopia

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Markos Kuma ◽  
Simon Shibru
Keyword(s):  
Vegetation Structure ◽  
Woody Plant ◽  
Basal Area ◽  
Floristic Composition ◽  
Woody Species ◽  
Regeneration Status ◽  
Tree Data ◽  
Carbon Project ◽  
Dodonaea Angustifolia ◽  
Conservation And Management

Our current study was conducted in Oda forest to explore floristic composition, vegetation structure, and regeneration of woody species in a newly established Humbo Carbon Project. In the project, the above information for sufficient conservation and management of the forest is not well documented. Data were collected in October and December 2014. Thirty-two quadrats (20 m × 20 m) lying 100 m far apart were used for shrub and tree data. In each major plot, subplots (1 m2) were established at the center and corner for seedlings and saplings data. Altitude, slope, and aspect were measured using GPS and clinometers. DBH, basal area, and IVI were used for vegetation structure. Among 62 species confined in 32 families and 54 genera, Dodonaea angustifolia and Combretum molle were the densest and the most dominant and frequent species with higher IVI. Altitude and slope had significant effect (p<0.0001) on basal area and dominance. Bell and inverted J shaped patterns of selected woody species were identified. The seedling, sapling, and matured tree had 2.3%, 23.7%, and 74% density ha−1 of individuals, respectively. Generally, the study confirmed that very few species had dominance and abundance, influence of altitude and slope on species distribution, and fair regeneration of the forest.

Diversity, regeneration status and population structure of gum- and resin-bearing woody species in south Omo zone, southern Ethiopia

2014 ◽  
Vol 25 (2) ◽  
pp. 319-328 ◽  
Author(s):  
Muhamed Adem ◽  
Adefires Worku ◽  
Mulugeta Lemenih ◽  
Wubalem Tadesse ◽  
Jürgen Pretzsch
Keyword(s):  
Population Structure ◽  
Woody Species ◽  
Southern Ethiopia ◽  
Regeneration Status ◽  
South Omo

scholarly journals Natural Regeneration Status of the Ground Water Forest in Nech Sar National Park, Ethiopia

2017 ◽  
Vol 7 (2) ◽  
pp. 1
Author(s):  
Molla Mekonnen Alemu
Keyword(s):  
Ground Water ◽  
Vegetation Structure ◽  
Natural Regeneration ◽  
Energy Demand ◽  
National Park ◽  
Canopy Cover ◽  
Household Energy ◽  
Regeneration Status ◽  
Experimental Plots ◽  
Water Vegetation

Nech Sar National Park hosts a variety of unique terrestrial and aquatic features. The ground water forest of the park is characterized by dense canopy cover, evergreen, none rainfall dependent out of its biome region, rich in ground water and associated wetlands and mixed shrub land vegetation structure. Since ecosystem management is solidly dependent on localized factors, the research was carried out to explore the regeneration status of the ground water woody vegetation of Nech Sar National Park as it is a crucial element of identifying environmental as well as human induced factors that are affecting the restoration potentials of the vegetation. A total of 36 experimental plots were employed along five different transects that were laid out systematically so as to explore the regeneration status of the major woody tree species of the ground water vegetation of the park. The findings showed that, the ground water vegetation is at high risk of natural regeneration that needs the urgent interference of all concerned Government and development partners in averting the selective cutting of trees so as to meet the ever increasing household energy demand of Arba Minch city.

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