Re: Cyanobacteria

Blue-green alga are able to fix Nitrogen gas. Because of this they often 
flourish in situations where N is limiting. Blue-green algae can also 
produce nerve toxins (short chain proteins) which can be deadly to animals 
and small children. This is, however, uncommon though here on the 
Canadian prairies every once in a while a slough becomes toxic during the 
short season of liquid water.


Chemistry Textbook: The authoritative tome is by Stumm and Morgan, 1981, 
Aquatic Chemistry: An Introduction (ha!) emphasizing chemical equilibria 
in natural waters. Wiley and Sons, 780 pp.