ABSTRACT
An increase of dissolved oxygen in the pond bottom at night benefited from the mud’s accelerated mineralization function. The method of modeling nighttime oxygen consumption can be used to estimate and forecast the amount of dissolved oxygen in the pond at dawn. This chapter conducts studies on oxygen consumption, and especially on the relationship between dissolved oxygen and mud respiration, as it pertains to fish farming in China. Oxygen measurements taken from different depths in the pond were integrated and used to calculate the dissolved oxygen content of the whole pond. Nighttime dissolved oxygen concentrations in pond water were lower than air-saturated oxygen concentrations during the whole experimental period. Nighttime oxygen consumption by pond mud was directly correlated with the dissolved oxygen concentration of the pond at dusk. The oxygen consumption of the pond mud was found to be directly proportional to the dissolved oxygen concentration in the water.
