Sources of organic matter to surficial sediments from the Scotian Shelf and Slope, Canada

Alkanol and sterol degradation in a sediment core from the continental slope off southwestern Taiwan

“…Predominant n-alkanols are C22OH, C24OH, C26OH and C2sOH, and the major sterols are 24-methylcholest-5-en-3fl-ol, 24-ethylcholesta-5,22E-dien-3fl-ol and 24ethylcholest-5-en-3fl-ol, indicating a strong terrigenous input since the core is located close to land. This is in accord with those reported in the literature [10][11][12].…”

Distribution of terrigenous lipids in marine sediments off northeastern Taiwan

“…Similar results were also obtained for sediments from the continental shelf south of New England (Venkatesan et al, 1988). In general, the terrestrial component of the organic matter in unconsolidated sediments decreases progressively offshore, but this is not so on the Scotian margin (Canada) where organic matter with the greatest marine input is found in inshore basins (Pocklington et al, 1991). Lin et al (1992) investigated the organic carbon content in the continental margin sediments off northeastern Taiwan and found that lowest organic carbon concentrations were found in the shelf sediments while high concentrations were observed in the upper continental slope sediments.…”

Assessment of fecal sterols and ketones as indicators of urban sewage inputs to coastal waters

“…However, coprostanol is present in all cases. Furthermore, the concentrations in the former group are of the same order of magnitude as those found in Bedford Basin, where a direct relation of coprostanol and sewage contamination was questioned (26). On the other hand, a clear differentiation between sewage-polluted and pristine sediments cannot be established from their coprostanol contents.…”

“…Moreover, the results of an annual study in Bedford Basin showed that the temporal variation of coprostanol in water particulates was identical with that of the rest of natural phytosterols (26), thus questioning the specificity of this sterol as an urban sewage indicator.…”