This level of biomass was maintained
until a storm event on 23-25 October initiated the decline of the bloom.
No filaments of A.ovalisporum remained in the water by mid-November. Also,
no filaments were found in sediment traps (sampled on 22 November) exposed
for a week in the epilimnion and in the hypolimnion.
At the peak of the 1994 bloom, the filaments of A.ovalisporum were distributed
fairly homogeneously, both horizontally throughout the lake and vertically
down to the seasonal thermocline, as demonstrated by the vertical (Figure 2)
and horizontal distribution of Chi a (mean for nine lake stations.: 18.9 ± 1.5 mg
Chi I-1).