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Nutrient And Total Suspended Solids Data For Back Bay (1986-1989), Mitchell D. Norman, Ronald Southwick
Nutrient And Total Suspended Solids Data For Back Bay (1986-1989), Mitchell D. Norman, Ronald Southwick
I. Water Quality
Surface water samples from Back Bay, Virginia were analyzed for nutrient and total suspended solids on a monthly basis from April, 1986 through December, 1989. The concentrations of total phosphorus, erthophosphate, nitrite and nitrate nitrogen, and total ammonia generally fell within the "normal" range and did not indicate high nutrient loading. However, the concentrations of total suspended solids and total Kjeldahl nitrogen were high, exceeding EPA reference levels. Soil particles kept in suspension by wind driven wave action was the primary factor for the high concentration of total suspended solids. The high concentration of total Kjeldahl nitrogen was due to …
The Kinetics Of Organic Matter Mineralization In Anoxic Marine Sediments, David J. Burdige
The Kinetics Of Organic Matter Mineralization In Anoxic Marine Sediments, David J. Burdige
OES Faculty Publications
The kinetics of sulfate reduction and inorganic nutrient production (ΣCO2, ammonium, and phosphate) were examined in the sediments at five sites in the southern Chesapeake Bay, using long term (> 200 d) sediment decomposition experiments. Average first order rate constants for these processes (at 25oC) decreased from 8.2 to 3.7 yr-1 in the surface sediments (0-2 cm), to 2.1 to 0.2 yr-1 at 12-14 cm. The C/N and C/P ratios of the organic matter undergoing decomposition also increased with depth at these sites. Taken together, these results indicate that the reactivity of the organic matter …