Assessment of Physico-Chemical Characteristics and Phytoplankton of a Polluted Tidal Creek in Ajegunle, Lagos (Published)
This study assessed the physicochemical quality of the creek and its phytoplankton diversity; samples were collected and analyzed for five months (May-September, 2018). The pH value recorded was within 6.95-7.53 but the total hardness recorded are above the WHO standard as a result of the presence of calcium, magnesium, sulphate arising from TSS, TDS, nutrient input. The level of chlorophyll-a increases with respect to pH, salinity, conductivity, water temperature, phosphate, sulphate and nitrate which reflected in the observed high DO and BOD5, an indication of the high rate of productivity of the water, the diversity and abundance of phytoplankton but negatively correlated with turbidity, TSS. However, the COD value exceeded the acceptable concentrations for a polluted water (20–200 mg/l). This is also confirmed with the presence of high amounts of indicator species like Microcystis spp., Euglena spp.,Phacus spp.and Trachelomonas spp. Measures should be taken to remediate the Ajegunle Creek .
Effect of Timber Resource Processing on the Edibe-Edibe Creek in Calabar South Local Government Area of Cross River State, Nigeria (Published)
This study examines the quality of water and the variation in the physical and chemical properties of water in the Edibe-edibe Creek. It also looked at the microbial characteristics of the Creek. The data for the study were derived from direct field observation, sampling measure in situ measure and laboratory analysis. The phypico-chemical parameters as well as the bacteriological parameters were analysed the laboratory using various instruments. The result of the analysis revealed that: except for electrical conductivity, PH and iron, all other parameters were on the increase from station one to two. However, nitrate had the same values in both, Station one and two. The biological analysis also revealed that the parameters had an increase value from station one to two. Generally, it was discovered that the water in this Creek is not good for domestic purposes because of the availability of nitrate and the acidic nature of the water.