Publication Date

1989

Location

Nice France

Description

Human beings and animals interact with their habitat. This interaction changes the structure of the organization of com­munities of plants. The region that has been changed for worst with tress being replaced by grasses as a result of burning is the Savanna region of Nigeria. Annual fire is a common occurence in Nigerian Savanna and this ecological factor has altered the original vegetation of these areas. Burning is usually undertaken for clearing land for culti­vation and also for production of a flush of fresh palatable grass for grazing by the nomadic cattle herdsmen. Forage plants like Afzelia africana, Pterocarpus erinaceus etc. are also lopped for the cattle by these herdsmen especially during the dry seasons - December - April. During this period forage plants are favoured since they are superior to grass in protein content (Brinckman and Deleeuw, 1979). The Savanna region of Nigeria stretches from latitude 7° to 13°N and longitude 3° to 14°E (Fig. !). There are an estimated 8-11 million cattle, 22-27 million goats and 7-21 million sheep in Nigeria (Milligan et al., 1982), most of which live in the Sav­anna regions of Nigeria. The ability of these herbivores to utilize seasonally available resources often depends upon their mobility. The impact of these populations on Savanna habitat is enormous. This study therefore is aimed at highlighting some of the effects of the different burning regimes and grazing on seedlings and saplings of forage plants in the Southern Guinea Savanna of Nigeria.

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Human and Animal Impacts on Vegetation and Forage Plants in the Southern Guinea Savanna of Nigeria

Nice France

Human beings and animals interact with their habitat. This interaction changes the structure of the organization of com­munities of plants. The region that has been changed for worst with tress being replaced by grasses as a result of burning is the Savanna region of Nigeria. Annual fire is a common occurence in Nigerian Savanna and this ecological factor has altered the original vegetation of these areas. Burning is usually undertaken for clearing land for culti­vation and also for production of a flush of fresh palatable grass for grazing by the nomadic cattle herdsmen. Forage plants like Afzelia africana, Pterocarpus erinaceus etc. are also lopped for the cattle by these herdsmen especially during the dry seasons - December - April. During this period forage plants are favoured since they are superior to grass in protein content (Brinckman and Deleeuw, 1979). The Savanna region of Nigeria stretches from latitude 7° to 13°N and longitude 3° to 14°E (Fig. !). There are an estimated 8-11 million cattle, 22-27 million goats and 7-21 million sheep in Nigeria (Milligan et al., 1982), most of which live in the Sav­anna regions of Nigeria. The ability of these herbivores to utilize seasonally available resources often depends upon their mobility. The impact of these populations on Savanna habitat is enormous. This study therefore is aimed at highlighting some of the effects of the different burning regimes and grazing on seedlings and saplings of forage plants in the Southern Guinea Savanna of Nigeria.