Table 1. Fraction of toxin-producing cyanobacterial cells of total (expressed toxicity) and total number of toxin producing cyanobacteria (medians ± standard deviations).

	Temperature	% toxin-producing cells	Number of toxin producing cells *105 per ml
Toxic strain axenic	20°C	70.0±3.8	3.9±0.4
	26°C	66.1±2.1	4.2±1.4
	32°C	20.6±3.2	1.7 ± 0.2
Toxic strain with heterotrophic lake bacteria	20°C	70.0±1.5	2.7±0.4
	26°C	61.3±3.4	5.0±0.7
	32°C	30.9±3.4	7.2±0.9
Toxic and non-toxic strains, axenic	20°C	59.8±4.1	16 ±2
	26°C	35.4±14.9	12 ±4
	32°C	24.8±2.1	11 ±8