Volume 26(1), February 2006: 124–133.
Page 128. In Table 1, total phosphorus concentrations should be measured in mg PO4/L, and total chlorophyll-α concentrations in μg/L. The sentence in the middle of the right column should read as follows:
According to Forsberg and Ryding (1980), the threshold value separating euthropic and hypereutrophic lakes is 100 μg/L for total phosphorus (or 0.3 mg PO4/L) and 40 μg/L for chlorophyll-α concentration.
In all other instances in the article, chlorophyll-α concentrations should be expressed as μg/L.