Information

Ecological parameter:  pH (preferendum) according to Tachet

Parameter group: habitat preference parameters

Explanation:
This trait provides information on the tolerance of invertebrates to low pH values, describing their sensitivity to natural or anthropogenic stream acidification (e.g. the consequence of acid rain due to dissolved acidic gases - sulfur dioxic, nitrogen oxide - in rainwaters). Six categories have been defined.

Additional information:
Note that Several classifications of the Tachet database are on higher taxonomic level than on species level. To display them in the list please enable "include higher taxonomic units" in the "advanced search".

Abbreviations:
AbbreviationExplanation
≤ 4pH less than 4
> 4-4.5pH between 4 and 4.5
> 4.5-5pH between 4.5 and 5
> 5-5.5pH between 5 and 5.5
> 5.5-6pH between 5.5 and 6
> 6pH greater than 6
Assigned taxa for each higher systematic unit
TaxagroupNumber of assigned taxa / total number of taxa - percentage
Porifera3 / 9 - 33.3%
Coelenterata2 / 13 - 15.3%
Turbellaria4 / 60 - 6.6%
Kamptozoa1 / 1 - 100%
Nemertini1 / 1 - 100%
Gastropoda15 / 230 - 6.5%
Bivalvia3 / 66 - 4.5%
Polychaeta1 / 13 - 7.6%
Oligochaeta16 / 234 - 6.8%
Hirudinea10 / 66 - 15.1%
Crustacea11 / 255 - 4.3%
Ephemeroptera16 / 344 - 4.6%
Odonata17 / 158 - 10.7%
Plecoptera9 / 571 - 1.5%
Heteroptera10 / 124 - 8%
Planipennia1 / 12 - 8.3%
Coleoptera53 / 3342 - 1.5%
Trichoptera38 / 1428 - 2.6%
Lepidoptera4 / 18 - 22.2%
Diptera (excl. Chironomidae)2 / 2342 - 0%
Bryozoa6 / 16 - 37.5%