“…Sulfate reduction reactions in sediments result in a buildup of dissolved reactive phosphate (Pod3-), ammonium (NH,') and alkalinity in pore waters which may be orders of magnitude more concentrated than in the overlying seawater (Sholkovitz, 1973;Berner, 1974;Suess, 1976). The stoichiometry of sulfate reduction as expressed by the equation of Richards (1965) has been used, with some success, to describe sedimentary nutrient regeneration (Gaines and Pilson, 1972;Berner, 1977;Martens et al, 1978;Gaudette and Lyons, 1980). Hence sulfate concentration depth pro-@ Inter-Research/Printed in F. R. Germany files can be used to calculate theoretical nutrient regeneration rates using diagenetic models (Berner, 1974(Berner, , 1977Martens et al, 1978).…”