DEPARTMENT OF FOREST RESOURCES MANAGEMENT

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Author: search.filters.author.Jimoh, S.O.Subject: search.filters.subject.conservation

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    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 sustainability
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    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.
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    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.