Abstract
Benthic tube-building polychaetes which utilize sediment particles have been found to incorporate fly ash in their tubes. Experiments were conducted on North Sea specimens of Myriochele oculata Zachs and Pectinaria koreni (Malmgren) in artificial sediments offering a range of fly ash concentrations. A marked selection for non-ash particles was shown by Myriochele oculata, and a marginal selection against ash by Pectinaria koreni. It is suggested that this selection is based on the inorganic nature of fresh ash particles, assuming initial collection for feeding: as ash particles at the sea bed develop an organic component, such selection will disappear.
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