Information

Ecological parameter:  trophy TDI

Parameter group: trophic preference parameters

Explanation:
The Trophic Diatom Index (TDI) (KELLY & WHITTON, 1995) is an index for monitoring the trophic status of rivers based on diatom compostion.
KELLY, M.G. & B.A. WHITTON (1995): The trophic Diatom Index, a new index for monitoring eutrophication in rivers. J. Appl. Phycol. 7, 433-444.

Assigned taxa for each higher systematic unit
TaxagroupNumber of assigned taxa / total number of taxa - percentage
Araphidees108 / 577 - 18.7%
Brachyraphydees89 / 366 - 24.3%
Centrophycidees4 / 847 - 0.4%
Epithemiacees26 / 82 - 31.7%
Monoraphidees158 / 528 - 29.9%
Naviculacees929 / 5376 - 17.2%
Nitzschiacees210 / 801 - 26.2%
Surirellacees68 / 291 - 23.3%