Biodiversity Status and Indigenous Knowledge Systems in Conserving Boni Forest, Garissa County, North Eastern Kenya
Total Page:16
File Type:pdf, Size:1020Kb
BIODIVERSITY STATUS AND INDIGENOUS KNOWLEDGE SYSTEMS IN CONSERVING BONI FOREST, GARISSA COUNTY, NORTH EASTERN KENYA Rose Sirali Antipa A Thesis Submitted in Fulfillment of the Requirements for the Degree of Doctor of Philosophy [Environmental Studies] of the University of Nairobi October 2015 DECLARATION I DECLARE THAT THIS IS MY ORIGINAL WORK AND IT HAS NOT BEEN SUBMITTED FOR EXAMINATION IN ANY OTHER UNIVERSITY --------------------------------------------- ------------- Rose Sirali Antipa [Ph.D. CANDIDATE] Date THIS THESIS HAS BEEN SUBMITTED FOR EXAMINATION WITH OUR APPROVAL UNIVERSITY SUPERVISORS ---------------------------------------------------------------- ------------ Prof. Richard S. Odingo [Ph.D. SUPERVISOR] Date ---------------------------------------------------------------- ------------ Dr. Francis Mwaura [Ph.D. SUPERVISOR] Date i LIST OF ABBREVIATIONS ADA Advanced Data Analysis ANOVA Analysis of Variance CBD Convention on Biodiversity CBO Community Based Organization CFAs Community Forest Associations COP Conference of Parties DEAP Dristrict Environment Action Plan DRSRS Department of Remote Sensing and Resource Surveys EDA Exploratory Data Analysis EMCA Environmental Management and Coordination Act ESA Environmentally Significant Area FAO Food and Agriculture Organisation GCM General Circulation Models GIS Geographic Infomation System GPS Global Positioning System ICRAF International Center for Research and Agro Forestry IEK Indigenous Environmental Knowledge IKS Indigenous knowledge Systems INPE The Brazilian National Institute of Space Research IPCC Intergovernmental Panel on Climate Change IUCN International Union for Nature Conservation IUFRO International Union of Forest Research Organisations KARI Kenya Agricultural Research Institute KEFRI Kenya Forest Research Institute KIFCON Kenya Indigenous Forest Conservation LK Local Knowledge LM Lower Midland Zone MEA Multi Lateral Environmental Agreements NEMA National Environment Management Authority ii NGOs Non Governmental Organisations NTFP Non Timber Forest Products PCA Principal Component Analysis PCQ Point Centered Quarter PRSP Poverty Reduction Strategy Paper RARC Regional Assessment and Resources Centre REA Rapid Environmental Assessment SPSS Statistical Packages for Social Sciences TDS Total Dissolved Solids TEK Traditional Ecological Knowledge TK Traditional Knowledge UNCCD United Nations Convention to Combat Desertification UNCED United Nations Conference on Environment and Development UNEP United Nations Environmental Programme UON University of Nairobi VBR Village Based Researchers WCED World Commission on Environment and Development WCMC World Conservation Monitoring Center WSSD World Summit on Sustainable Development iii ABSTRACT The conservation of forest bioresources is hampered by lack of information on the resources and on how communities interact with the resources. Historically, the association of local communities with resources such as forests through their Indigenous Knowledge Systems (IKS) has played an important role in the conservation of natural resources. Unfortunately, IKS is fast getting eroded due to what can be loosely termed as “modernization”. As such Kenyan forest resources are threatened because some current conservation methods may not be compatible with forest community livelihoods. This study was undertaken in Boni Forest, Ijara Sub County in Garissa County which is rated as one of the poorest sub counties in Kenya. The aim of the study was to generate information on the forest status in terms of species composition and distribution and to identify how the community has traditionally interacted with the ecosystem. The study findings point towards the need for forest conservation methods which incorporate indigenous conservation. Vegetation data was collected from 6 transects sampled to represent the variety of ecological conditions in the forest. These were: Mararani (Coastal forests), Mangai (Acacia- Commiphora woodland), Bodhai (Riverine influence on forests), Sankuri (Lungi block of Boni Forest), Hulugho (Acacia–Commiphora woodland), Sangailu (Dryland forests & not gazetted). The data collected included a detailed species inventory and distribution, plant species information on horizontal and vertical dominance, threats to the forest resources, details of plant utilization by communities, information on existing indigenous knowledge systems on plant conservation as well as threats to this knowledge. The data collected was analyzed using parametric and non parametric methods. The findings indicated that the forests of Ijara Sub County are rich in species composition with a total of 386 plant species recorded of which 130 were woody species. The forests of the southern parts of the sub county had a higher species diversity as indicated by the Shannon Wiener diversity index . The dominant families, namely Mimosaceae and Euphorbiaceae accounted for 10.8% and 9.2% respectively of all plant species recorded. Croton pseudopulchellus (Pax) was the most abundant while Dobera glabra (Forssk), Newtonia hildebrandtii (Vatke), Adansonia digitata (L), Diospros cornii (Chiov) and Lannea schweinfurthii (Engl.) dominated in terms of basal area coverage. Other dominant species were Brachylaena huillensis O. Hoffm ., Manilkara sulcata (Engl.), Acacia nilotica (L.), Willd.ex Delile and Combretum constrictum (Benth) in terms of height and crown. The research established that the forests of the study area were facing a wide range of threats including fires, illegal logging and clearances for agriculture as well as over exploitation for wood fuel. The remote sensing data indicated that the health of the forests was more influenced by climatic variations of rainfall than by human encroachment. The local communities in the area of study had a rich knowledge of the forests as indicated by the diversity of local names, uses of plants and regeneration methods. The communities, especially among the Boni as compared to the Somali, demonstrated good knowledgeof traditional control mechanisms that limited the exploitation of certain species. The study found that the transmission of indigenous knowledge systems from the elderly to the youth was hampered by conversions to new religions, attainment of formal education and the lack of written documents that explained the specific indigenous conservation methods. Indigenous conservation knowledge is therefore an asset that needs to be tapped to sustainably conserve the landscape along with iv the biodiversity in the forests. The study recommended the streamlining of government policies on forest conservation to incorporate both scientific and indigenous knowledge systems for conservation of community natural resources. The study also recommended the importance of augmenting conservation measures in order to safeguard the ecosystem services that biodiversity provides and human society needs. Current anthropogenic threats may lead to detrimental and irreversible ecosystem degradation. The findings provide strong arguments to strengthen the case for further research which should be focused on evaluating the response of ecological communities to various anthropogenic pressures. The study specifically recommended the securing of Boni forest by giving it full protection, empowerment of Community Forest Associations (CFAs) and development of a participatory forest management plan. Key Words: Indigenous knowledge systems, species composition, species density, threats, clearance for agriculture v ACKNOWLEDGEMENT I am grateful to numerous people who helped in gathering materials, providing insight, support and assistance to the research work which gave rise to this thesis. I would particularly like to thank Mr. Mohamud Hashir Ali, Provincial Director of Environment - North Eastern Province (2004-2012); Mr. Hussein Soumo, District Environment Officer - Ijara Sub County (2007-2010), Mr. Paul Nguru, Principal Research Coordinator, National Environment Management Authority (NEMA); Dr. John Mworia, Lecturer (UON), Mr. Job Ndakala, Botanist (DRSRS); Mr. James Muchiri, retired Botanist, DRSRS; and Mr. Geoffrey Mashauri retired officer, KEFRI. I thank the team of foresters who have worked in Ijara Sub County from 2006-2012 including Mr. Bashir who was always available for me on every field visit. I thank all the colleagues in the Ministry of Agriculture 2006-2012 who supported me and gave me access to any material I requested for. My heartfelt gratitude to the Somali and Boni communities amongst whom I have worked for a number of years. They have taught me and built my knowledge base to the extent of generating this work in its present form. I thank the youth who assisted me to administer the questionnaires and to develop the plant species check list. I thank the elders for allowing me to work in their special ecosystem and among their community. It is their indigenous knowledge systems given to me thatis documented in this thesis. Mine is to say that I have made friends and bonds that I would never have made. I thank the gracious people of Masalani for their kindness to me. I want to thank the Provincial Administration, Ijara Sub County who ensured our security while working in a very insecure area. They proved their mettle, fighting off not only unwanted elements but wildlife as well. It would have been impossible to work in and around Boni Forest without them due to the constant threats from the war torn Somalia. I thank the government; all the deparments and agencies that supported me throughout the duration of