Cyanobacteria – architects of the atmosphere

Oldest fossils recorded – 3.5 billion years

The Great Oxidation Event– 3.8 billion

Huronian Glaciation

Cyanobacteria Chloroplasts

phycocyanin

chlorophyll a

carotenoids

Reproduction

Habitat/Distribution

Eutrophication: enrichment of an environment with nutrients

Around 2,700 species described.

Around 6,380 species believed to exist

Cytotoxins

Spirulina: antioxidant, vitamin B source

Possible link to ALS?

???