Edmondson W T
Science. 1970 Aug 14;169(3946):690-1. doi: 10.1126/science.169.3946.690.
After diversion of sewage effluent from Lake Washington, winter concentrations of phosphate and nitrate decreased at different rates. From 1963 to 1969, phosphate decreased to 28 percent of the 1963 concentration, but nitrate remained at more than 80 percent of the 1963 value. Free carbon dioxide and alkalinity remained relatively high. The amount of phytoplanktonic chlorophyll in the summer was very closely related to the mean winter concentration of phosphate, but not to that of nitrate or carbon dioxide.
从华盛顿湖改道污水排放后，冬季磷酸盐和硝酸盐的浓度以不同速率下降。1963年至1969年，磷酸盐降至1963年浓度的28%，但硝酸盐仍保持在1963年数值的80%以上。游离二氧化碳和碱度仍相对较高。夏季浮游植物叶绿素的含量与冬季磷酸盐的平均浓度密切相关，而与硝酸盐或二氧化碳的浓度无关。
