The trophic level index (TLI) is used in New Zealand as a measure of nutrient status of lakes.[1] It is similar to the trophic state index but was proposed as alternative that suited New Zealand.[2]
The system uses four criteria, phosphorus and nitrogen concentrations, as well as visual clarity and algal biomass weighted equally.[3]
New Zealand Ministry for the Environment - Trophic Level Index for lakes
Definitions of the 5 trophic states - Oligotrophic, Mesotrophic, Eutrophic, Supertrophic and Hypertrophic lakes
ReferencesEdit
^New Zealand Ministry for the Environment 2010-05-22 at the Wayback Machine - Trophic Level Index for lakes
^Burns, Noel; Graham Bryers; Eddie Bowman (March 2000). Protocol for Monitoring Trophic Levels of New Zealand Lakes and Reservoirs. Retrieved 9 May 2017.
^Burns, Noel; McIntosh, John; Scholes, Paul (2005). "Strategies for Managing the Lakes of the Rotorua District, New Zealand". Lake and Reservoir Management. 21 (1): 61–72. doi:10.1080/07438140509354413. S2CID 86767838.
This New Zealand–related article is a stub. You can help Wikipedia by expanding it.
trophic, level, index, confused, with, trophic, level, trophic, level, index, used, zealand, measure, nutrient, status, lakes, similar, trophic, state, index, proposed, alternative, that, suited, zealand, system, uses, four, criteria, phosphorus, nitrogen, con. Not to be confused with Trophic level The trophic level index TLI is used in New Zealand as a measure of nutrient status of lakes 1 It is similar to the trophic state index but was proposed as alternative that suited New Zealand 2 The system uses four criteria phosphorus and nitrogen concentrations as well as visual clarity and algal biomass weighted equally 3 Lake type Trophic level Chla mg m 3 Secchi depth m TP mg P m 3 TN mg N m 3 Ultra microtrophic 0 1 0 13 0 33 31 24 0 84 1 8 16 34Microtrophic 1 2 0 33 0 82 24 15 1 8 4 1 34 73Oligotrophic 2 3 0 82 2 0 15 7 8 4 1 9 0 73 157Mesotrophic 3 4 2 0 5 0 7 8 3 6 9 0 20 157 337Eutrophic 4 5 5 0 12 3 6 1 6 20 43 337 725Supertrophic 5 6 12 31 1 6 0 7 43 96 725 1558Hypertrophic 6 7 gt 31 lt 0 7 gt 96 gt 1558See also EditWater pollution in New Zealand Lakes of New Zealand Environment of New ZealandExternal links EditNew Zealand Ministry for the Environment Trophic Level Index for lakes Definitions of the 5 trophic states Oligotrophic Mesotrophic Eutrophic Supertrophic and Hypertrophic lakesReferences Edit New Zealand Ministry for the Environment Archived 2010 05 22 at the Wayback Machine Trophic Level Index for lakes Burns Noel Graham Bryers Eddie Bowman March 2000 Protocol for Monitoring Trophic Levels of New Zealand Lakes and Reservoirs Retrieved 9 May 2017 Burns Noel McIntosh John Scholes Paul 2005 Strategies for Managing the Lakes of the Rotorua District New Zealand Lake and Reservoir Management 21 1 61 72 doi 10 1080 07438140509354413 S2CID 86767838 This New Zealand related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Trophic level index amp oldid 1119310506, wikipedia, wiki, book, books, library,
