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.
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.
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".

Examples of Trophic State Index in a sentence

  • Recent Trophic State Index (TSI) graph from Hillsborough Watershed Atlas.

  • The Trophic State Index (TSI; Carlson 1977), the percent-surface-area macrophyte coverage during the peak growing season (June through August), and the median concentration of nonvolatile suspended solids are used to calculate the AQI score.

  • The TSI is a calculated index of lake condition based on nutrient and chlorophyll (a) concentrations (please see "Learn more about Trophic State Index").

  • The Trophic State Index (TSI; Carlson 1977), the percent surface area macrophyte coverage during the peak growing season (June through August), and the median concentration of nonvolatile suspended solids (NVSS) are used to calculate the ALI score.Higher ALI scores indicate increased impairment.

  • Between 1992 and 2016, Carlson’s Trophic State Index (TSI; Carlson 1977) has ranged between 45 and 60, allowing us to classify Teal Lake as slightly eutrophic.

  • Secchi disk transparency, (B) total phosphorus concentration, (C) chlorophyll-a concentration, and (D) Carlson’s Trophic State Index.

  • Lead Tester This role sets the strategy for testing in terms of scope (functional and non- functional), deliverables, roles & responsibilities, testing types processes, tooling,reporting/communications, test data andenvironment management.

  • To determine water quality, the Trophic State Index (nutrient load) over a period of time is considered as well as dissolved oxygen, bacteria, plants and animals in the water.

  • TROPHIC STATE INDEX (TSI) Scientific Name for Lake Health What the Name Means Trophic State Index (TSI) Florida Lake Rating Oligotrophic Lacking nutrients 0-49 Good Mesotrophic Some nutrients 50-60 Good Eutrophic Rich in nutrients 61-69 Fair Hypereutrophic Extremely rich in nutrients 70-100 Poor A “good” TSI (Trophic State Index) reading (0-60) means that the lake has low to medium nutrient levels.

  • Impairment screening is done to determine the Trophic State Index (TSI), aquatic life, human health and recreational uses, and the need for more in-depth (EPA Clean Lakes Phase I type) studies.


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.

Related to Trophic State Index

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