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EFFECTS OF NUTRIENT ENRICHMENT, LIGHT INTENSITY AND TEMPERATURE ON GROWTH OF PHYTOPLANKTON FROM LAKE HURON
Citation:
Lin, C. AND C. Schelske. EFFECTS OF NUTRIENT ENRICHMENT, LIGHT INTENSITY AND TEMPERATURE ON GROWTH OF PHYTOPLANKTON FROM LAKE HURON. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/3-79/049.
Description:
This report contains a seasonal study on effects of nutrient enrichment, light and temperature on the growth of natural phytoplankton and three species of cultured diatoms. Natural phytoplankton assemblages collected monthly from April to December 1975, in southern Lake Huron were used for ten sets of bioassays by adding nutrients in 18 combinations directly to lake water samples. Nutrients tested were phosphorus, nitrogen, silica, EDTA, trace metals and vitamins. Responses to different treatments evaluated by chlorophyll production and cell counts were complex and varied seasonally. Nitrogen had the least effect and phosphorus the greatest effect on chlorophyll production.