A trophic state index for lakes1

1977/03/01 by Robert E. Carlson · 17 citations
Earth and Planetary Sciences · Environmental Science · Energy · #Marine and coastal ecosystems #Aquatic Ecosystems and Phytoplankton Dynamics #Algal biology and biofuel production

paper · doi:10.4319/lo.1977.22.2.0361

Abstract

A numerical trophic state index for lakes has been developed that incorporates most lakes in a scale of 0 to 100. Each major division (10, 20, 30, etc.) represents a doubling in algal biomass. The index number can be calculated from any of several parameters, including Secchi disk transparency, chlorophyll, and total phosphorus.

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