ABSTRACT The objective of establishing protected areas should be made to tally with needs and aspirations of the local community. Interaction between the local populace and the ecosystem plays a significant role in the determination of effective management. Overgrazing by cattle and deforestation by human activities over time has denuded the Obudu Cattle Ranch, Cross River State, Nigeria, of its lush natural flora. Consequently, its productivity as grassland has drastically been reduced. Den...
ABSTRACT Forest road construction appears to be the most expensive single investment in forest operations and designing forest road to specification is a complex engineering problem involving economic, environmental and social factors. The study was carried out to assess the technical compliances to recommended land owners guide to building forest access road in a forest estate in Nigeria. The study was carried out at Ondo State Afforestation Project (OSAP) Headquarters, South West Nigeria. D...
ABSTRACT A 12-week feeding trial was conducted in 27-cm3 circular plastic tanks (50 × 34 cm) to assess the performance of juvenile African catfish (Clarias gariepinus) fed diets containing African yam bean meals (Sphenostylis stenocarpa) processed by different techniques. Five 35% crude protein diets were formulated containing no yam bean meal (control) or 34% fishmeal and 66% yam bean meal. The yam bean meals were processed in four manners: (a) ‘cooked’, sun-dried, and ground, (b) ‘to...
ABSTRACT A study was carried out to determine the physico-chemical and heavy metal contents of the water and heavy sediments of Ekole River in Bayelsa State, Nigeria. Water and sediment samples were collected in the dry (December/ January) and wet (June/July) seasons during 1003 and 7004. Surface water up to 15cm depth and sediments were sampled at nine locations: 100, 200,400.500m upstream; 0. l00,100, 300.400111 downstream of an oil flow station. The samples were analyzed for total suspende...
ABSTRACT Adult Clarias gariepinus (African Catfish) were purchased from Eleiyele Lake and Zartech fish farm in Ibadan. Water samples were also collected in February (dry season) and June (rainy season), 2002. Gill, bone, intestine, muscle and water samples were analyzed for five metals: manganese, copper, zinc, iron, and chromium by atomic absorption spectroscopy (AAS) in two separate experiments. In each case, two tissues were compared with the levels of the metals in water viz: Gill, bone, ...