Trophic State Index definition

Trophic State Index or “TSI” means the trophic state index for lakes, which is based on lake chlorophyll a, Total Nitrogen, and Total Phosphorus levels, and is calculated following the procedures outlined on pages 86 and 87 of the State’s 1996 305(b) report, which are incorporated by reference.
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Trophic State Index means a numerical quantification of lake productivity. The Trophic State Index shall be determined by TSI = 9.81 x Ln(chlorophyll-a) + 30.6.
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Trophic State Index means the results of the calculation for chlorophyll-a concentration using both Carlson, R.E. 1977, A Trophic State Index For Lakes, Limnology and Oceanography, 22:361-369 and the methods outlined in the Board guidance document "Guidance For Determining Lake Trophic State For Determination Of Nutrient Limited Waters Status".
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Examples of Trophic State Index in a sentence

  • The Trophic State Index (TSI) is an indication of the degree of enrichment of a lake using measurements of water transparency (Secchi disk depth), total phosphorus concentrations and chlorophyll-a concentrations during the summer (June to September) months.

  • The • Leaf Area Index • Normalized Difference Vegetation Index • Vegetation Condition Index • Vegetation Productivity Index • Dry Matter productivity • Soil Water Index • Surface Soil Moisture • Top of Canopy Reflectances The Trophic State Index for lake water quality (expected 2018) will indirectly reflect the eutrophication status of a water body.


More Definitions of Trophic State Index

Trophic State Index means a classification system which uses algal biomass as the basis for classification which can be independently measured by chlorophyll a, Secchi depth, and total phosphorus concentration.
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