POPULAR ABSTRACT: Bacterial populations were examined in a sub-Arctic lake to augment the understanding of the flow of organic material and other nutrients through these waters. Several micro-organisms were isolated, capable of converting atmospheric nitrogen into biologically available forms. Also organisms capable of removing organic materials at very low temperatures, psychrophiles, were isolated. Enzymes from these unusual organisms were examined to determine what allows these unusual activity at low temperatures. The activities of these enzymes were not found to be unusual.

Project Number: A-004-ALAS Agreement Number: 14-01-0001-575, 14-01-0001-722 Project Duration: May 3, 1965 - June 30, 1966