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Protocol for monitoring trophic levels of New Zealand lakes and reservoirs

Publication date:  March 2000
Publication reference number:  SMF 5090

New Zealand’s lakes and reservoirs are rarely static in their water quality or ecological condition. Trophic levels of lakes are critical indicators of water quality. They provide a measure of the nutrient status of a body of water. This protocol specifies a cost-effective method to determine the trophic levels of lakes, and changes in these levels over time.