Information

Ecological parameter:  acid class preference

Parameter group: habitat preference parameters

Explanation:
Taxa are assigned values between 1 and 5 according to Braukmann & Biss (2004). The higher the value, the higher the preference of the taxon for an acid environment.

Braukmann, U. & Biss, R. (2004): Conceptual study - An improved method to assess acidification in German streams by using benthic macroinvertebrates. Limnologica 34 (4): 433 - 450.


Classification system: metric value (1-5)

Abbreviations:
Category nameAbbreviationExplanation
Acid class
1continuously neutral (not acidic)
2predominantly neutral to episodically weakly acidic
3periodically critically acidic
4periodically very acidic
5permanently very acidic
Assigned taxa for each higher systematic unit
TaxagroupNumber of assigned taxa / total number of taxa - percentage
Turbellaria3 / 60 - 5%
Gastropoda4 / 230 - 1.7%
Bivalvia1 / 66 - 1.5%
Oligochaeta3 / 234 - 1.2%
Crustacea2 / 255 - 0.7%
Ephemeroptera30 / 344 - 8.7%
Odonata3 / 158 - 1.8%
Plecoptera46 / 571 - 8%
Heteroptera1 / 124 - 0.8%
Megaloptera2 / 6 - 33.3%
Planipennia1 / 12 - 8.3%
Coleoptera37 / 3342 - 1.1%
Trichoptera74 / 1428 - 5.1%
Diptera (excl. Chironomidae)23 / 2342 - 0.9%
Chironomidae5 / 1278 - 0.3%