title: Aquatic acetylene-reduction techniques: solutions to several problems.
abstract: Previous methods of performing aquatic acetylene-reduction assays are described and several problems associated with them are discussed. A refinement of these older techniques is introduced and problems that it overcomes are also discussed. A depth profile of nitrogen fixation (C2H4 production), obtained by the refined technique, is shown for a fertilized Canadian Shield lake in the Experimental Lakes Area of northwestern Ontario.
mesh_terms: D000114:Acetylene / Q000378:metabolism*; D001395:Azotobacter / Q000378:metabolism; D000458:Cyanobacteria / Q000378:metabolism; D005069:Evaluation Studies as Topic; D009586:Nitrogen Fixation; D010084:Oxidation-Reduction; D014871:Water Microbiology
chemical_list: D000114:Acetylene