Plant Community Studies and Ecological in Vesttgation on the Afro Alpine Vegetation of Sanities Plateau of the mountains ,Ethiopia
| dc.contributor.advisor | Fetene, Masresha(PhD) | |
| dc.contributor.author | Gashaw, Menassie | |
| dc.date.accessioned | 2018-07-05T11:48:01Z | |
| dc.date.accessioned | 2023-11-08T16:32:53Z | |
| dc.date.available | 2018-07-05T11:48:01Z | |
| dc.date.available | 2023-11-08T16:32:53Z | |
| dc.date.issued | 1994-06 | |
| dc.description.abstract | The vegetation of the afroalpine and subafroalpine regions of Bale Mountains at Sanettie were studied to describe major plant groups and relationships between vegetation and edaphic, climatic and topographic factors. Vegetation composition was studied along an altitudinal gradient extending from 3400 m up to 4300 m above sea level. Vegetation was sampled from 20 m by 20 m quadrats. Frequency and cover of 65 species from a total of 77 quadrats were recorded, human interference was scaled 0 - 5, where 0 stands for insignificant or no interference and 5 for high interference. Soil samples were collected from each quadrat and analyzed for texture, pH, conductivity, organic matter, available phosphorus, total nitrogen, soil moisture content and exchangeable bases (K+ and Na +). Association analysis was performed on the vegetation data using NCLAS: Agglomerative clustering by distance optimization. Seven major plant groups, namely Kniphojia - Euphorbia - Alchemilla scrub, Erica - Philippi belt, Helichrysum citrispinum - Alchemilla abyssinica, Alchemilla hallmanii meadow, Festuca - Carex monostachya swamps, Helichrysllm splendidunl - Lobelia - Festllca - Ellryops and Lobelia - Festuca - Helichrysum gojens plant groups are described. The relative mean annual precipitation and daily fluctuations in temperature were found to be the most important factors determining plant group structure. The gradual changes in altitude associated with changes in atmospheric pressure, moisture, and temperature influenced the distribution of vegetation. Vegetation cover and species diversity decreased with an increase in altitude. Plant cover and diversity decreased with an increase in an estimated degree of human interference. Implications of the findings are discussed and recommendations are given towards the conservation of the biodiversity and the rational utilization of afroalpine ecosystems. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/6684 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Biology | en_US |
| dc.title | Plant Community Studies and Ecological in Vesttgation on the Afro Alpine Vegetation of Sanities Plateau of the mountains ,Ethiopia | en_US |
| dc.type | Thesis | en_US |