Information
Ecological parameter: pH (preferendum) according to Tachet
Parameter group: habitat related 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 are defined.
Tachet, H., Bournaud, M., Richoux, P. & Usseglio-Polatera, P. (2010): Invertébrés d'eau douce - systématique, biologie, écologie. CNRS Editions, Paris, 600 p.
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:
Category name: | Abbreviations: | Explanation: |
---|---|---|
<= 4 | ≤ 4 | pH less than 4 |
> 4 - 4.5 | > 4-4.5 | pH between 4 and 4.5 |
> 4.5 - 5 | > 4.5-5 | pH between 4.5 and 5 |
> 5 - 5.5 | > 5-5.5 | pH between 5 and 5.5 |
> 5.5 - 6 | > 5.5-6 | pH between 5.5 and 6 |
> 6 | > 6 | pH greater than 6 |
Taxagroup | Number of assigned taxa / total number of taxa - percentage |
---|---|
Bivalvia | 3 / 77 - 3.8% |
Bryozoa | 6 / 19 - 31.5% |
Coelenterata | 2 / 13 - 15.3% |
Coleoptera | 52 / 2678 - 1.9% |
Crustacea | 11 / 270 - 4% |
Diptera (excl. Chironomidae) | 2 / 2404 - 0% |
Ephemeroptera | 16 / 353 - 4.5% |
Gastropoda | 15 / 241 - 6.2% |
Heteroptera | 10 / 124 - 8% |
Hirudinea | 10 / 68 - 14.7% |
Kamptozoa | 1 / 1 - 100% |
Lepidoptera | 4 / 19 - 21% |
Nemertini | 1 / 1 - 100% |
Odonata | 17 / 174 - 9.7% |
Oligochaeta | 16 / 240 - 6.6% |
Planipennia | 1 / 12 - 8.3% |
Plecoptera | 9 / 576 - 1.5% |
Polychaeta | 1 / 13 - 7.6% |
Porifera | 3 / 12 - 25% |
Trichoptera | 38 / 1439 - 2.6% |
Turbellaria | 4 / 61 - 6.5% |