ABSTRACT:The meiobenthic community of different sediment types was studied for 12 months between January and December 1997 in the Bnny estuarine environment. Five replicates core samples were collected from three sediment types (Muddy, Sandy and Chikoko sediments). Meiofaunal densities in order of magnitude are muddy (356 to 899 cm 3 ), sandy (278 to 866 cm 3 ) and chikoko (133 to 252 cm 3 ). Most of the taxa groups had higher densities in dry season than in wet season with significant seasonal variations observed for Sandy sediment and Muddy sediment while Chikoko sediment densities did not show significant seasonal variation (t -test < 0.5). The meiofaunal densities for the different sediment types showed marked significant variation (ANOVA, p < 0.05). @ JASEM

The impact of sawdust on the water quality of Elechi creek, in Port Harcourt municipality, has been investigated. Three sampling stations were established -upstream, vicinity and downstream of the main dump site of the sawdust in the water body. Various physiochemical characteristics, including temperature, Electrical conductivity, pH, Dissolved Oxygen, and Biochemical Oxygen Demand (BOD) as well as nutrients and heavy metal concentrations, of the water body have been measured using standard methods. The investigation reveals that sawdust may have altered the quality of water in the creek as changes in electrical conductivity and metal concentrations were observed.