摘要：Information theory based indices of predictability were used to quantify seasonal differences in diel variability of dissolved oxygen and temperature in Lakes Elmenteita and Sonachi. Predictability of patterns in diel variability was high in both lakes for water temperatures and dissolved oxygen. Community metabolism was measured in Lake Elmenteita, a shallow, Kenyan soda lake based on a series of vertical profiles of dissolved oxygen and temperature measured about monthly over several days for 13 periods from February 1973 to May 1974. Variations in areal oxygen content at successive intervals throughout each day and night were corrected for air-water oxygen exchange to calculate net free water oxygen change. Maximal rates of increase usually occurred in late morning or early afternoon. Rates of change were summed to determine night-time respiration and gross photosynthesis.
