An in situ evaluation of nutrient effects in lakes
Robert A. Jordan, Michael E. Bender, United States. Environmental Protection Agency. Office of Research and Monitoring, United States. Environmental Protection Agency. Office of Water Programs
For sale by the Supt. of Docs., U.S.Govt. Print . Off., 1973 - Science - 227 pages
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05 level algae ampoules Anabaena Ankistrodesmus falcatus ANOVA Biomass Estimates bottles cell chelators Chroomonas acuta chrysomonads Comparison containment effects control jugs Control N+P counts counts per minute Cryptomonas cryptophytes employed enrichment experiments environmental epilimnion eutrophication experiment 12 Experiment Number experimental EXPERIMENTS 1-20 experiments 25-S EXPT factors Figure Fragilaria Goldman High Treatment I C H incubation independent effects Initial interactions jug environment jug filling lake stations lake water Limnol measurements ment method mg/l 0 mg/l N+EDTA N+P+EDTA ng/l nitrate nitrilotriacetic acid nitrogen NTA EDTA nutrient mixtures nutrient treatments Oceanogr phosphate phosphorus photic zone photosynthesis phytoplankton communities plankton primary productivity productiv productivity response patterns Productivity Results replicates responding species samples Significant Simple Effects Source F F stimulation stimulatory summer thermocline Third Sister Lake treatment effects Treatment X X/Control variance X X X X/Control X X/Control