The diatom module is used to assess streams based on the frequencies and distribution of diatom species. Diatoms allow assessing streams based on their relation with chemical parameters, which can indicate anthropogenic pollution.
The diatom module is used to assess the water quality of streams based on the frequency and distribution of diatom species. The calculated diatom indicator (DI-CH) indicates the condition of the streams with regard to nutrient load.
Frequencies and distribution of diatom species
The evaluation is based on the Swiss Diatom Index (DI-CH)
The evaluation is done in five quality classes according to the DI-CH
The Information on the autoecology of diatoms is an complementary important aid to the interpretation of the DI-CH index. It contains information on the geographical distribution and presence of species in relation to chemical parameters.