Although light intensity may not strongly influence
site-specific toxin production by P. parvum and associated
ambient aquatic toxicity relative to other physical and
chemical factors, the results of these previous studies
suggest that light intensity may influence the stability and
fate of toxins released by P. parvum in aquatic ecosystems.
Whereas such studies manipulating the light environment
of whole cultures were important for identifying
factors that affect the physiological status and resulting
toxicity of P. parvum cells, they did not allow for evaluation
of which factors affect the environmental fate of toxins
once released into the water column.