CONCLUSIONS Carbonate sediment supply is an important factor in the behavior and evolution of coastal margins; depends on reef productivity; can be estimated using a field-based model Annual rates of sediment supply are instrumental in developing sediment budgets and understanding coastal behavior over space and time In Kailua, carbonate sediments are produced at a rate of 7039 ± 1172 m 3 y -1 ; 41% of those produced in the last 5000 years remain stored in bay and coastal plain The Kailua model is the most comprehensive, field-based effort on the largest system to date; first for Hawaii; can be applied to other reef systems Rates at which reefs produce sediment are slow compared to rates of shoreline change
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