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Addis Ababa University School of Graduate Studies Faculty of Science Department of Biology Ecological and Systematic Zoology Stream ADDIS ABABA UNIVERSITY SCHOOL OF GRADUATE STUDIES FACULTY OF SCIENCE DEPARTMENT OF BIOLOGY ECOLOGICAL AND SYSTEMATIC ZOOLOGY STREAM SPECIES COMPOSITION, RELATIVE ABUNDANCE AND DISTRIBUTION OF AVIAN FAUNA OF ENTOTO NATURAL PARK AND ESCARPMENT BY: KALKIDAN ESAYAS ADVISOR: PROF. AFEWORK BEKELE June, 2010 ADDIS ABABA UNIVERSITY SCHOOL OF GRADUATE STUDIES FACULTY OF SCIENCE DEPARTMENT OF BIOLOGY ECOLOGICAL AND SYSTEMATIC ZOOLOGY STREAM SPECIES COMPOSITION, RELATIVE ABUNDANCE AND DISTRIBUTION OF AVIAN FAUNA OF ENTOTO NATURAL PARK AND ESCARPMENT ADVISOR: PROF. AFEWORK BEKELE A THESIS SUBMITTED TO THE SCHOOL OF GRADUATE STUDIES OF ADDIS ABABA UNIVERSITY IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN BIOLOGY BY: KALKIDAN ESAYAS June, 2010 Table of Contents Content Page Acknowledgements i List of tables ii List of figures iii List of plates iv List of appendices v Abstract vi 1. Introduction ....................................................................................................... i 2. Literature Review ............................................................................................ xiii 3. Objectives .................................................................................................... xvii 3.1. General Objective xvii 3.2. Specific Objectives xvii 4. The Study Area ............................................................................................. xviii 5. Materials and Methods .................................................................................. xxiv 5.1. Materials xxiv 5.2. Methods xxiv 5.2.1. Preliminary Survey .................................................................. xxiv 5.2.2. Sampling Design ...................................................................... xxiv 5.3. Data collection xxviii 5.4. Data Analysis xxix 6. Results ................................................................................................... xxxi 6.1. Species Composition xxxi 6.2. Species Diversity xxxvi 6.3. Species Richness xxxviii 6.4. Species Similarity xl 6.4.1. Species Similarity Based on Habitat .............................................. xl 6.4.2. Species Similarity Based on Season ............................................. xli 6.5. Avian Abundance xliii 6.6. Avian Distribution xlvii 7. Discussion .................................................................................................... xlix 8. Threats to the Study Area ................................................................................liii 9. Conclusion and Recommendations ................................................................... lvi 10. References ................................................................................................... lviii Appendices lxvi ACKNOWLEDGEMENTS First and foremost, I would like to express my heartful gratitude to the most impactful contributor and my research advisor Professor Afework Bekele for allowing me the freedom to follow research of my interest while providing valuable professional guidance, thoughtful suggestions and consistent encouragement throughout my thesis work. His kindness in providing his own personal field guides, data collection equipment, visiting the study area and creating different mechanism to alleviate the financial constraints, punctuality, being concerned, patience, dedication, fatherly approach and immediate response is highly acknowledged. I am grateful to Addis Ababa University, Department of Biology for providing me financial support to carry out this research. Heartful appreciation goes to Ethiopian Heritage Trust for providing information about the study area and different published materials. I also thank the National Meteorological Service Agency for providing me meteorological data for my study area. Last but not least, I am indebted to my parents, friends, colleagues and classmates for their support and encouragement. LIST OF TABLES Table Page Table 1. Avian Species observed in Entoto Natural Park and escarpment ............ 21 Table 2. Species diversity among habitats during the dry season ......................... 26 Table 3. Species diversity among habitats during the wet season ......................... 27 Table 4. Species diversity among habitats during both seasons ........................... 27 Table 5. Number of species: Mean± SE ................................................................ 28 Table 6. Richness Index in each habitat during the dry Season 29 Table 7. Richness Index in each habitat during the wet Season. 30 Table 8. Seasonal species similarity (SI) within habitats ...................................... 31 Table 9. Avian species similarity (proportion) of common avian species among habitats during the dry season ...................................................... 31 Table 10. Avian species similarity (proportion) of common avian species among habitats during the wet season 32 Table 11. Species similarity (proportion) of common avian species among habitats during both seasons 32 Table 12. Difference in the abundance of avian between two seasons .................. 34 Table 13. Difference in the abundance of avian among habitats 34 Table 14. Log-transformed abundance values of avian (Mean±SE) 34 Table 15. Summary of the relative abundance of avian species during the dry season using encounter rates 35 Table 16. Summary of the relative abundance of avian species during the wet season using encounter rates 36 Table 17. Presence and absence of avian families in various habitat types within the study area 37 LIST OF FIGURES Figure Page Figure 1. Location map of the study area .............................................................. 9 Figure 2. Monthly average maximum and minimum temperature of the study area ..................................................................................................... 11 Figure 3. Average monthly rainfall of the study Area ............................................ 12 Figure 4. Avian species similarity among the habitat types .................................. 33 Figure 5. Abundance rank of avian species in the study area during both seasons 36 LIST OF PLATES Plate Page Plate 1. Topography of the study area ................................................................. 10 Plate 2. Forest habitat ........................................................................................ 15 Plate 3. Farmland ............................................................................................... 15 Plate 4. Church areas ......................................................................................... 16 Plate 5. Eucalypts plantation .............................................................................. 16 Plate 6. Soil Erosion ............................................................................................ 45 Plate 7. Deforestation …… ................................................................................... 46 APPENDICES Appendix Page Appendix 1. Species of plants identified during the study period ........................ 57 Appendix 2. Relative abundance of avian in the forest habitat during the dry Season ............................................................................................ 58 Appendix 3. Relative abundance of avian in the forest habitat during the wet Season ............................................................................................ 60 Appendix 4. Relative abundance of avian in the farmland habitat during the dry Season ............................................................................................. 63 Appendix 5. Relative abundance of avian in the farmland habitat during the wet Season ............................................................................................. 65 Appendix 6. Relative abundance of avian in the church areas during the dry Season…………………………………………………………………………….67 Appendix 7. Relative abundance of avian in the church areas during the wet Season…………………………………………………………………….…...…69 Appendix 8. Relative abundance of avian in the eucalypts plantation during the dry Season .......................................................................................... 71 Appendix 9. Relative abundance of avian in the eucalypts plantation during the wet season ................................................................................ 71 Appendix 10. Field data sheet used for point count and total count methods…....74 Appendix 11. Field data sheet used for transect count method 75 Appendix 12. Sample photographs of avian taken during the field study 76 ABSTRACT The present study was carried out to investigate avian species composition, relative abundance and distribution in Entoto Natural Park and escarpment. It was conducted from July 2009 to March 2010 during wet and dry seasons. The study area was stratified based on vegetation. Four habitat types: forest, farmland, church and eucalypts plantation were considered. Point count method was employed for forest habitat and eucalypts plantation, line transect method was employed for farmland and total count method was used for church areas. Data were collected in the morning (6:30-10:00 a.m.) and late afternoon (3:30-6:00 p.m.) T-test and ANOVA were applied for analysis of the effect of season and habitats on abundance of species. A total of 124 avian species belonging to 14 orders and 44 families were identified in the study area during the wet and dry season surveys. During the dry season, highest avian diversity was observed
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