Photosynthetic Bacteria Closes Seattle's Green Lake

[lovell <lovell at drizzle_com>]

"Toxic Algae Forces Closure of Green Lake" (Seattle Post-Intelligencer)
http://www.seattle-pi.com/local/lake26.shtml

	"The waters of Green Lake in recent weeks have deteriorate into a
murky, pea-green gruel, the result of the pollution-aided and explosive
growth of a toxic bacterium that is commonly -- though inaccurately --
dubbed "blue-green algae....
	"In 1991 city crews spread 181 tons of
              aluminum sulfate, more commonly
              known as alum, into the lake. Alum
              binds up the phosphorus and makes it
              unavailable to fuel the growth of the
              algae. Officials said the alum treatment
              would retard the growth of the
              Aphanizomenon for about five years."

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