Scientific Investigations Report 2007–5117
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5117
Figure 20. Relation of lakewide median chlorophyll-a concentration to lakewide median total-phosphorus concentration, Upper Klamath Lake, Oregon, June 1990–2006. Data values represent the median of measurements on each June sampling date. Spearman’s ρ correlation coefficient = 0.80, p < 0.0001. Years are not shown for all data values but are included here to aid in making comparisons.
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