The objectives of this study are to use different types of indexes to assess the current pollution status in Mengkabong lagoon and select the best index to describe the Mengkabong sediment quality. The indexes used in this study were Enrichment Factor (EF), Geo-accumulation Index (Igeo), Pollution Load Index (PLI) and Marine Sediment Pollution Index (MSPI). Different indexes give diverse status...

A laboratory based microcosm study was undertaken to determine the persistence of the faecal indicator organism Escherichia coli in coastal recreational water and sediment under varying environmental conditions. Intact sediment cores were taken from three distinct coastal sites in the Adelaide metropolitan area and the overlying water was inoculated with known concentrations of E. coli. The con...

Background The Sediment Quality Objectives (SQO) indirect effects assessment determines whether sediments meet California’s narrative SQO for human health: Pollutants shall not be present in sediments at levels that will bioaccumulate in aquatic life to levels that are harmful to human health. This program determines whether sediment contamination at a site results in an unacceptable health ris...

For bacterial source tracking (BST), the percentage of Enterococcus faecalis isolates among all fecal enterococci in an environmental water sample may serve as an inexpensive indicator of human and bird fecal contamination. Research suggests that some subspecies of fecal indicator bacteria are better adapted than others to survive environmental conditions. We determined the survival of seven di...

The role of tidal processes on intertidal surface sediments is frequently stated but rarely investigated due to the methodological restrictions. This study provides a basis for describing the tidal effects on the mangrove sediment. It reports investigations into the chemical composition of mangrove surface sediment in Mengkabong lagoon, Sabah, Malaysia. The levels of 16 parameters were determin...

BACKGROUND The aim of present work was to assess the concentration levels as well as vertical distribution of indicator bacteria including total coliform, fecal coliform, Pseudomonas aeruginosa, and Heterotrophic Plate Count (HPC) in the marine environment (seawater and coastal sediments) and evaluate the correlation between indicator bacteria and some physicochemical parameters of surface sedi...