Lakes and Watercourses
Lakes and Watercourses
Lakes and Watercourses
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
TABLE 1.<br />
SUMMARY of parameters included in Environmental Quality Criteria for<br />
<strong>Lakes</strong> <strong>and</strong> <strong>Watercourses</strong> (a minus sign indicates the absence of model<br />
criteria).<br />
Area/parameter <strong>Lakes</strong>/ Current Deviation<br />
water- conditions from<br />
courses<br />
reference<br />
value<br />
Nutrients/eutrophication<br />
Total phosphorus concentration l + +<br />
Total nitrogen concentration l + -<br />
Total nitrogen/total phosphorus ratio (by weight) l + -<br />
Area-specific total nitrogen loss w + +<br />
Area-specific total phosphorus loss w + +<br />
Oxygen status <strong>and</strong> oxygen-consuming substances<br />
Oxygen concentration l/w + -<br />
TOC (total organic carbon) l/w + -<br />
CODMn (chemical oxygen dem<strong>and</strong>) l/w + -<br />
Light conditions<br />
Absorbency l/w + -<br />
Water colour l/w + -<br />
Turbidity l/w + -<br />
Secchi depth l + -<br />
Acidity/acidification<br />
Alkalinity l/w + +<br />
pH l/w + -<br />
Metals<br />
Metals in water, sediment, moss <strong>and</strong> fish l/w* + -<br />
Phytoplankton<br />
Total volume l + +<br />
Chlorophyll concentration l + +<br />
Diatoms l + -<br />
Water-blooming cyanobacteria l + +<br />
Potentially toxin-producing cyanobacteria l + +<br />
Biomass Gonyostomum semen l + +<br />
14