Abstract A study on indigenous microalgae from sluggish tidal freshwater/brackish mangrove dominated creeks(Ito-Iwolo) emptying into Lagos Lagoon was carried out for twelve months (February 2010 – January 2011).Samples were obtained using a 55 μm plankton net towed at low speed for 10 minutes. Various physico-chemical parameters were monitored; surface water temperature, PO4-P, transparency, NO3-N, SO42- […]
SINGLE AND JOINT ACTION TOXICITY EVALUATION OF INSECTICIDE AND LAUNDRY DETERGENT AGAINST Poecilia reticulata
Abstract In laboratory bioassays, single action toxicities of an insecticide (Apicide [A]) and two laundry detergents (Persil [P] and Klin [K]) as well as their joint action toxicity studies in binary (1:1; 1:4) and triple (1:1:1) mixtures were evaluated against Poecilia reticulata (Guppy). Joint action toxicity mortality data was analyzed using Synergistic Ratio (SR), Concentration […]
GROWTH AND YIELD RESPONSES OF OKRA (Abelmoschus esculentus) IN A PETROLEUM HYDROCARBON-POLLUTED SOIL AFTER SUBSTRATE AMENDMENT
Abstract The present study investigated the effects of hydrocarbon pollution on the growth and yield performances of okra after substrate amendment. Uniform weights (10 kg) of top soil were measured into buckets and thoroughly mixed with waste engine oil (WEO) to obtain uniform concentrations of 5 % w/w. Oil-polluted soils were amended with 100 g […]
REFERENCE CRITERIA FOR ECOLOGICAL RIVER HEALTH ASSESSMENT IN ETHIOPIAN HIGHLANDS
Abstract The concept of a reference condition is increasingly used to describe benchmarks against which current condition is compared. This study defines criteria that represent reference sites for assessing highland streams in four major river basins of Ethiopia. Twenty a priori criteria were chosen as representative for Ethiopian highlands and they reflect some aspects of […]
EFFECT OF LABORATORY PRODUCED XYLANASE FROM Aspergillus niger ON FIBRE DIGESTIBILITY OF RICE HUSK AND GUINEA GRASS
Abstract The efficacy of laboratory produced xylanase enzyme from Aspergillus niger on highly fibrous feeds and feedstuffs was investigated. Guinea grass (Panicum maximum) from grass hay and rice husk (Oryza sativa) from crop by-product characterised with high fibre content served as substrates (Feeds and Feedstuffs) for the experiment. The enzyme xylanase was prepared from Aspergillus […]
HEALTH RISK OF HEAVY METALS IN Celosia argentea L. GROWN ON MUNICIPAL WASTE SOILS IN IBADAN, NIGERIA
Abstract This paper assessed the appropriateness of dumpsites in Urban and Peri-urban Agriculture (UPA). The bioaccumulation and potential heavy metal-toxicity risk of consuming Celosia argentea L. grown on four different dumpsites soils (Ajibode, Sasa, Moniya and Akinyele) and reference soil from University of Ibadan Training and Research Farm was also evaluated. The soil samples were […]
ASSESSING SIGNIFICANCE OF COMMUNITY DOCUMENTED CLIMATE IMPACTS AND ADAPTATION PREFERENCES AND OPTIONS IN THE LAKE VICTORIA REGION, TANZANIA
Abstract The study was conducted in Ukerewe Island in the Lake Victoria, Tanzania in order to ascertain the communities’ awareness on climate change impacts and adaptation/coping strategies. The methodology involved randomly selected 420 people mostly farmers and fishermen who were interviewed and involved in focus groups. It was observed that communities were aware of the […]
SOLID WASTE DISPOSAL USING GIS IN THIKA MUNICIPALITY, KENYA
Abstract Solid waste management plays a critical role in urban development. Transportation of solid waste from point of generation to point of disposal is required to be done in a minimal time to avoid accumulation of solid waste at points of generation. Uncollected solid waste poses environmental and health hazards to residents. Therefore, it is […]
DETERMINANTS OF SOLID WASTE MANAGEMENT SYSTEM IN UYO METROPOLIS, AKWA IBOM STATE, NIGERIA
Abstract Solid waste is one of the major challenges facing Nigerian cities. Waste management problem is complex because it involves a multitude of scientific, technical, economic and social factors. However, this essential service is not effectively and properly performed by the concerned bodies in Uyo Metropolis of Akwa Ibom State. Data were collected from both […]
PRELIMINARY ASSESSMENT OF DRILL MONKEY DIET AT AFI MOUNTAIN WILDLIFE SANCTUARY (AMWS) IN CROSS RIVER STATE- NIGERIA
Abstract Preliminary investigation of diet of free ranging drill monkeys was conducted at Afi Mountain Wildlife Sanctuary (AMWS), Cross River State, Nigeria. Indirect field observation method of study was conducted using four pre-determined trails of 5km length. The trails were followed from 8.00hrs to 11.00hrs and 13.00hrs to 18.00hrs every day for two weeks to […]