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Nutrient behind fresh water algae blooms pinpointed

Date:
August 22, 2012
Source:
University of Alberta
Summary:
Ecologists have reviewed data from studies of controlling human-caused algae blooms in lakes and says controlling the input of the nutrient phosphorus is the key to fighting the problem.

University of Alberta ecologist David Schindler has reviewed data from studies of controlling human-caused algae blooms in lakes and says controlling the input of the nutrient phosphorus is the key to fighting the problem.

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Recent short-term algae studies claim that controlling the human input of both nitrogen and phosphorus into lakes must be reduced to control summer algae blooms.

In contrast, Schindler concluded that only phosphorus control is necessary after reviewing long-term lake experiments and case histories of lakes where nutrients have been controlled.

Schindler estimates that the cost of controlling just the phosphorus input alone would be as much as 90-per-cent less than trying to control both phosphorus and nitrogen.

Possible sources of phosphorus to lakes are from sewage, agriculture, runoff from lawns, gardens and septic tanks.

Much of Schindler's critical evidence comes from long-term experiments, some lasting 40 years, in the Experimental Lakes Area in northwestern Ontario. The Federal government recently announced that it would shut the ELA down in March of 2013.

Schindler's review of cultural eutrophication was published August 22 by the Proceedings of the Royal Society of London Series B.


Story Source:

The above story is based on materials provided by University of Alberta. Note: Materials may be edited for content and length.


Journal Reference:

  1. D. W. Schindler. The dilemma of controlling cultural eutrophication of lakes. Proceedings of the Royal Society B: Biological Sciences, 2012; DOI: 10.1098/rspb.2012.1032

Cite This Page:

University of Alberta. "Nutrient behind fresh water algae blooms pinpointed." ScienceDaily. ScienceDaily, 22 August 2012. <www.sciencedaily.com/releases/2012/08/120822125032.htm>.
University of Alberta. (2012, August 22). Nutrient behind fresh water algae blooms pinpointed. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2012/08/120822125032.htm
University of Alberta. "Nutrient behind fresh water algae blooms pinpointed." ScienceDaily. www.sciencedaily.com/releases/2012/08/120822125032.htm (accessed October 31, 2014).

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