Abstract
Sediment oxygen demand (SOD) was measured in catfish aquaculture ponds using a computer-controlled data acquisition system coupled with in situ respirometers. A total of 86 rate determinations were made in northwest Mississippi. Calculated SOD rates averaged 4·44 g/m 2 per day at an average temperature of 29°C. These rates exceeded those recorded previously in catfish ponds and may have reflected differences in pond construction and management. Location within the pond, but neither age nor location-age interaction, appeared to affect SOD.
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