Diversity And Distribution Of Moist Afro Montane Forest Pdf

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Woody Species Diversity and Vegetation Structure of Wurg Forest, Southwest Ethiopia

Ethiopian moist evergreen Afromontane forests are vital for the conservation of plant diversity, including genetic pools of Coffea arabica L. However, these forests are continuously shrinking and need empirical scientific studies for their effective conservation and sustainable management. This study was, therefore, conducted to assess woody species composition, diversity, endemicity, structure, plant communities, and environmental determinants in Sirso moist evergreen Afromontane forest of southern Ethiopia. Environmental variables such as altitude, slope, aspect, disturbance levels, and geographical location were recorded for each main plots. Vegetation structure and importance value index IVI , diversity, vegetation classification, and correlation with environmental factors were analyzed. A total of 74 woody species representing 70 genera and 34 families were identified.

Birds are one component of biodiversity. Ethiopia is rich in biodiversity resources. The avian diversity record is far from complete. There is no scientifically documented information on bird species composition and abundance at Nensebo forest. The objective of the study was to assess species composition, relative abundance and distribution of birds at Nensebo forest in southern Ethiopia. We employed a stratified random sampling technique with our study area stratified into two dominant habitat types: moist Afromontane forest and modified habitat.

Diversity and production in an Afromontane Forest

Metrics details. The area-based structure variables on plot level have a highly significant effect on total basal area growth. However, the effects of forest density and species richness on productivity were not straight forward. Maximum basal area production of about 0. Other neighbourhood structure variables were only occasionally significant or not significant at all. This contribution presents a new theoretical framework for analysing natural forests that includes community , plot and neighborhood variables of forest structure and diversity, and a first specific analysis of the structure and dynamics of the Knysna Afromontane Forest, based on a unique set of longterm observations.

For forest ecosystem management to be effective, explicit understanding of the species diversity-environmental relationship along elevation gradient is crucial. This study aimed at identifying and describing plant communities and also documenting their species diversity. Evaluation of relationships between selected environmental variables and species diversity was another objective of this study. These plots were used for shrub and herb diversity assessment. Within each sample plot, all plant species were documented and their scientific names were identified.

Show full item record. JavaScript is disabled for your browser. Some features of this site may not work without it. Date: Abstract: Local factors can play an important role in defining tree species distributions in species rich tropical forests. To what extent the same applies to relatively small, species poor West African montane forests is unknown.

Ethiopian vegetation types, climate and topography

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Shumi and P. Rodrigues and J.

This study was aimed to determine woody species composition, diversity, and vegetation structure and to investigate major threats to Wurg forest, southwest Ethiopia. Voucher specimens were brought to the Ethiopian Biodiversity Institute for identification and deposited there. R program version

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Bird Diversity in Nensebo Moist Afromontane Forest Fragment, South Eastern Ethiopia.

The diverse climate of various ecological regions of the country has driven the establishment of diverse vegetation, which range from Afroalpine vegetation in the mountains to the arid and semi-arid vegetation type in the lowlands. The formation of Ethiopian vegetation is highly connected to the climate and geological history of the country. Highland uplift and rift formation due to volcanic forces formed novel habitats with different topography and climatic conditions that have ultimately become drivers for vegetation diversification. Due to Ethiopia's connection with the temperate biome in the north and the Arabian Peninsula during the dry glacial period, the biotic assemblage of Ethiopian highlands consists of both Afrotropical and palearctic biota. In general, eight distinct vegetation types have been identified in Ethiopia, based mainly on elevation and climate gradients. These vegetation types host their own unique species, but also share several common species.

The principal human-induced disturbance regimes affecting this forest include logging and livestock grazing. We used a cluster analysis to identify plant communities and non-metric multidimensional scaling NMDS ordination to investigate environmental factors that influenced the distribution of the emergent plant communities. Three plant communities were identified: a Juniperus procera-Maytenus senegalensis community, which represented a phase of the potential natural dry Afromontane forest vegetation on steep slopes with shallow soils, a Pterolobium stellatum-Celtis africana community, found on more mesic sites, and a Cadia purpurea-Opuntia ficus-indica community, typically representing severely disturbed habitats. Altitude, slope, soil depth and distance to the nearest stream, which we collectively interpreted as a moisture gradient, and forest disturbance separated the plant communities. With only 39 of the 79 recorded woody species present in the seedling layer, the forest currently faces an extinction debt of 50 percent of the total woody species pool. Human disturbance has clearly affected plant species diversity in this forest as degraded plant communities typically lacked the commercially interesting or otherwise valuable tree species, were encroached by shrubs and in areas severely invaded by alien species.