Ecological parameter: pH preference

Parameter group: habitat related parameters

Explanation:
As pH values fluctuate both annually and daily, the pH preferences of the occurring taxa often better reflect the acidity status of a water body than direct measurements. Three categories are defined.

Type of assignment: single category assignment system ()
A description of the coding system can be found here  Abbreviations/Coding Systems

Abbreviations:

Category name:	Abbreviations:	Explanation:
acid	aci	pH < 7
neutral to alkaline	neu	pH = 7
indifferent	ind	no specific preference

Assigned taxa for each higher systematic unit:

Taxagroup	Number of assigned taxa / total number of taxa - percentage
Chironomidae	107 / 1315 - 8.1%
Ephemeroptera	95 / 353 - 26.9%
Odonata	166 / 174 - 95.4%
Plecoptera	73 / 576 - 12.6%
Trichoptera	124 / 1439 - 8.6%