Abstract
Invasive neophytic species such as Cylindrospermopsis raciborskii often pose a problem in many regions world-wide. The mechanisms of expansion are not fully understood. Occurrence and survival of the species at unusual ambient conditions are re-analysed from an earlier study to test the ability to survive in the vegetative form at water temperatures below 12°C. Results indicate that vegetative existence at low temperatures and light in the two periods analysed benefited from weather conditions exceeding long-term average climatic records. Winter survival enables the species to re-establish a population when conditions become favourable again. Such metabolic adaptations will allow the species to expand to and thrive in novel environments particularly if weather conditions due to climate warming change.
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