DEPARTMENT OF FOREST RESOURCES MANAGEMENT
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Item Willingness of herbal medicine practitioners and herbs vendors to contribute financially to conservation of medicinal plants in Ibadan, Nigeria(2014-12) Ajewole, O. I.; Oladele, A. T.; Ogunwale, A. RThe study evaluated the willingness of Herbal Medicine Practitioners (HMPs) and Herb Vendors (HVs) in Ibadan, Nigeria to contribute financially to medicinal plants conservation projects. Data was collected using structured questionnaires administered on 124 HMPs and 83 HVs randomly selected from fourteen herbal associations and marketers respectively. Results showed that 79.03%of all HMPs were males and 20.97% females while 83.13% of HVs were females and 16.87% males. All the HMPs and 97.59% of HVs were willing to contribute financially and provide useful information to conservation projects. Majority (54.84%) of the interviewed HMPs were willing to contribute between N500 - N1500 annually while most of the HVs (51.8%) were willing to contribute between N201 - N500 annually. Lack of financial power and land were identified as major constraints to holding private gardens. A total of 38 commonly used medicinal plant species was identified in the existing small scale private gardens of HMPs. There is need to organise the HMPs and HVs into formidable cooperative societies for easy access to fund and institute awareness campaign on the need for conservation of important local medicinal plants if the health for all dream is to be achieved.Item Effects of Land Use Changes On Flora Diversity in Oba Division of the Cross River National Park, Nigeria(2015) Ikyaagba, E. T.; Jimoh, S. O.; Amonum, J. I.The Oban Division of the Cross River national Park, Nigeria, is a globally renowned biodiversity hotspot. The area is experiencing rapid land use changes and little efforts have been made to document the effects of the changes on biodiversity. The study investigated the effects of different land use types on flora composition, distribution and diversity in the area with a view to generating data that will support conservation decisions. The area was stratified into four: primary forest (core), secondary forest (buffer), farm fallow and plantation. Ten transects of 2 km length each were systematically located in each land use type. Four sample plots of 50×50 m were located on each transect at an interval of 500 m. Each plot was subdivided into 10×10 m subplots; and nine subplots were randomly selected for the enumeration of trees, shrubs and climbers. A 1×1 m miniplot was then located at the centre of each subplot for herb enumeration. Flora species composition was estimated across the land use types using species diversity indices and Jaccard similarity indices. Composition, species richness and diversity of trees, shrubs and climbers all decreased from the core to plantation. However, herb species composition, richness and diversity increased from core to farm fallow. Significant differences in species composition were obtained across land use types at 5%. The highest tree species similarities were recorded between core and buffer. The highest similarities for shrubs, herbs and climbers were recorded between farm fallow and plantation. The absence of species previously recorded in the core, and in the other land use types makes it imperative that conservation efforts be improved and extended to areas beyond the core in order to save the remaining flora diversity in this forestItem Management of indigenous medicinal plants in Nigeria using phenological information(Academic journals, 2014) Oni, P. I.; Jimoh, S. O.; Adebisi, L. A.Available information on medicinal plants indicates habitat loss and has heightened the need for more proactive conservation strategies. Conservation efforts in this direction resulted in an eco-pharmacological survey in the West African sub-region by three countries (Nigeria, Ghana and Republic of Benin) to assess frequently used medicinal plants. The result of the socio-economic study based on utilization pattern regionally was used to produce a list of ten topmost frequently used and mentioned medicinal plants regionally and was subsequently adopted for the eco-pharmacological study in Nigeria. The list was super-imposed on a vegetation map of Nigeria for study sites selection in the species range. Selection criteria were based on the presence of at least one or more members of the medicinal plants in each location. Subsequently these plants were monitored range-wide for phenological behaviors for two seasons (dry and raining seasons) for two consecutive years. Findings indicated that the ten medicinal plants belonged to nine taxonomic families and are represented in the three plant habits. Flowering was majorly a dry season event (November to February) extending to early rains (March to April) in the species of the southern range (lowland and derived ecozones). Fruiting was typical of early rains increasing northwards (March to July). For short duration flowering species (Pcynanthus angolensis, Alstonea bonnie and Rauvolfia vomitoria), fruiting occurred late in dry season (December to February). Mean flowering duration ranged between (9.45 ± 1.73 to 45.68 ± 4.77) days, while mean fruiting duration ranged between (15.22 ± 2.15 to 145. 87 ± 8.59) days. Phenological charts were used to depict the phenological trends for the different species. The provision of this information offers a useful tool-kit for medicinal plants genetic resources monitoring, management and appropriate conservation strategies in NigeriaItem Population pattern and phenological behaviours for selected medicinal plants in Nigeria; implications for ex-situ conservation(2013) Oni, P.I.; Jimoh, S.O.; Adebisi, L.A.Recent developments indicated increasing gene-pool depletion for most medicinal plants in Nigeria despite their pharmaceuticals and therapeutic potentials. Initial socio-economic study involving three countries (Nigeria, Ghana and Republic of Benin) identified ten most frequently used medicinal plants. This list was superimposed on a vegetation map of Nigeria for the production of a distribution map ahead of an eco-geographic survey for population and phenological studies. Sample sites were defined in east-west directions under different vegetation and land use types. Sample sizes of 50m x 50m quadrant were selected across the vegetation and land use types. Altogether 55 samples quadrats were recorded across the zones; Lowland rainforest (20), Derived savanna (16), Sudan savanna (13) and Guinea savannah (6). A total of 196 individuals were recorded across the four ecological zones, rainforest 66 (33.67%) and least in Sudan savanna 13 individuals (6.63%). On land use basis, plantation forest recorded the highest in the lowland rainforest zone and least in sacred groove with similar trend in Derived savanna. In Guinea savanna, farm lands had the highest number of individuals while forest plantation accounted for the highest in Sudan savanna. Flowering duration varied greatly, ranging from (8.42 ±0.83) days to (45.25 ±5.77) days. Fruiting patterns ranged between (14.44± 4.28 to 145.87± 8.76) days. The need for adequate phenological information ahead of ex-situ conservation programme is desirable. Low stocking density observed across the range and land use types is implicated for holistic conservation strategies and sustainabilityItem Farmers’ Preferences for Tree Species on Agroforestry System in Ijebu North Local Government Area, Ogun State, Nigeria(2012) Mustapha, R.I.; Jimoh, S.O.This study was conducted to generate information on tree species farmers are willing to retain or plant on then- farms; the benefits they derive from the trees and the traditional management practices used for such trees in Ijebu North Local Government Area of Ogun State, in southwestern Nigeria, Multistage sampling technique was used to collect data on the tree species preferred by farmers, the benefits derived from the trees and the management practices used for such trees. A structured questionnaire was administered and data were analyzed using simple descriptive statistics. Farmers retain 72 tree species on their farms based on their knowledge and socio economic needs. They retain and plant fruit trees (17%), timber trees (18%), fuelwood (1%), and medicinal trees (1%). Sixty three percent (63%) of the farmers retain all the types of tree species on their farms as scattered on-farm trees due to the benefits they derive from them. The benefits include: food (88.8%), firewood (78.8%), fruits (95.6%), shades (91.9%), traditional medicine (94.4%), income generation (98.8%) and other environmental services (31.4%). On- farm trees are regenerated or sown directly on the field. Pruning and coppicing are the management practices applied.Item Biodiversity and ethnobotanical potentials of plant species of University of Agriculture Makurdi Wildlife Park and Ikwe Games Reserve, Benue State, Nigeria(International Formulae Group, 2009) Jimoh, S. O.; Debisi, L. A. A.; Ikyaagba, E. T.Plant biodiversity and ethnobotanical potentials of University of Agriculture Makurdi (UAM) Wildlife Park and Ikwe Games Reserve, Benue State, Nigeria, were investigated in this study. Floristic survey was conducted in the two reserves using stratified sampling technique based on the three identified microhabitats in each of the reserves. Nine plots measuring 25 m x 25 m were laid in each of the reserves to survey trees and shrubs with diameters at breast height (dbh) 5 cm and above. Within each plot, 5 sub-plots of 1 m × 1 m were established to assess plants below 5 cm dbh. Participatory ethnobotany and interview were used for the ethnobotanical survey. Seventy-one valuable species belonging to 39 families were identified. Ninety-three percent of these have more than one use; categories with medicinal uses topping the list (48%). Other uses include: wood (35%) and food (17%). Harvesting techniques in many of the species were intensive and destructive. It is suggested that harvesting of plant products in these reserves be controlled through monitoring and enlightenment.Item Non-Timber Forest Products in Phytomedicine and Culinary Uses(The Forestry Association of Nigeria, 2005) Jimoh, S.O.This paper is focused on medicinal and culinary uses of non-timber forest products. A medicinal plant is any plant which one or more of its organs contain(s) substances that can be used for therapeutic purposes or which are precursors for the synthesis of useful drugs. Culinary' plants on the other hand are those plants or products thereof used to flavour foods or beverages before, during or after their preparation. There is no clear distinction between spices and condiments. In the same vein, the distinction between food and medicinal plant is not clear-cut as many edible plants are also used in traditional medicine. Examples of these include: Vernonia amygdalina; Pterocarpus spp. Vitex doniana, Gongoronema laitfolium, Ocimum gratissimum, Crassocephalum rubens; Xylopia aethiopica; Piper guineense and Lactuca taraxacifolia. An attempt is made here to present information on some common medicinal plants with emphasis on their common, scientific and family names; ailment(s) they are used to treat, part(s) of plant used and the relevant authority. Culinary plants including spices and aromatics and the problems militating against the sustainable utilization of these valuable products are discussed while possible conservation methods are proposed.