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A CARLSON‐TYPE TROPHIC STATE INDEX FOR NITROGEN IN FLORIDA LAKES 1
Author(s) -
Kratzer Charles R.,
Brezonik Patrick L.
Publication year - 1981
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1981.tb01282.x
Subject(s) - trophic level , trophic state index , eutrophication , secchi disk , environmental science , nitrogen , hydrology (agriculture) , chlorophyll a , index (typography) , phosphorus , ecology , nutrient , chemistry , geology , biology , biochemistry , geotechnical engineering , organic chemistry , world wide web , computer science
: A data base consisting of predominantly nitrogen limited Florida lakes from the National Eutrophication Survey (NES) was used to develop a trophic state index based on total nitrogen concentration. This index was compared with Carlson's (1977) index based on total phosphorus concentration, and the lesser of the two values for each lake was averaged with indices based on Secchi disk transparency and chlorophyll a concentration to assess the trophic state of the 40 Florida NES lakes.