Abstract
The algal floras of 11 ecologically divergent stations in Worcester Co., Massachusetts, were examined from June to midSeptember, 1960. Water chemistry, including alkalinity, total hardness calcium, nitrates, and pH, was assayed at these locations. Most stations represented soft water environments. Batrachospermum, Draparnaldia, and Phormidium were characteristic of rapidly flowing water. Tribonema, Microspora, Ulothrix, Stigeoclonium, and members of the Zygnemataceae occur in gently flowing water. Occurring mainly in standing water were Oedogonium, Bulbochaete, and desmids. Warm water alkaline environments with high levels of calcium and hardness favored bluegreens, except Phormidium. In some cases blooms resulted from this alkaline condition. Desmids occurred principally in permanent, slightly acid ponds. In some instances it was possible to correlate appearance and growth of a particular species with physical and chemical factors of its environment.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
