Environmental Science 1021F/G Lecture Notes - Lecture 10: Eutrophication, Trophic State Index, Sewage Treatment
14 Dec 2017
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Additional problems of surface waters (freedman chapter 20) Causes of eutrophication of fresh and marine waters. Eutrophication in response to the addition of nutrients. : a large increase in the primary productivity of a waterbody, occurring. An unproductive lake, with a sparse supply of nutrients. A highly productive lake, due to an abundant supply of nutrients: oligotrophic, eutrophic, mesotrophic, hypertrophic. : the rate of an ecological process is limited by whichever necessary factor is available in the least supply relative to the biological demand. In environments in which the availability of light and moisture are adequate, it is usually nutrients that are the limiting factors for primary productivity. In a typical freshwater, the ratio of demand : supply for key nutrients are: carbon, silicon, nitrogen, potassium, phosphorus. P has the highest ratio, so it is likely to be the limiting nutrient to freshwater primary productivity: as the nutrient phosphate (po4.
