Information
Ecological parameter: saprobity according to Tachet
Parameter group: saproby related parameters
Explanation:
Following the saprobity system of water quality (Kolkwitz & Marsson 1909; Sládecek 1973), this trait describes the distribution of taxa along a gradient of organic matter availability/contamination from xenosaprobic (i.e. the lowest water saturation rate with decomposing organic substances in any water body) to polysaprobic (i.e. the richest water bodies in decomposable organic matter) systems. Indirectly, this trait provides information on the sensitivity of invertebrates to organic contamination. Five 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.
Kolkwitz R. & Marsson M. 1909. Ökologie der tierischen Saprobien. Internationale. Revue der Hydrobiologie, 2, 126-519.
Sládecek V. 1973. System of water quality from the biological point of view. Archiv für Hydrobiologie, 7, 1-218.
Type of assignment: affinity score assignment system (0 to 5)
A description of the coding system can be found here Abbreviations/Coding Systems
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: |
|---|---|---|
| xenosaprobic | x | species occurring in the xeno-saprobic zone (perfectly clean water courses) |
| oligosaprobic | o | species occurring in the oligo-saprobic zone (unpolluted to slightly polluted water courses) |
| b-mesosaprobic | b | species occurring in the beta-meso-saprobic zone (moderately polluted water courses) |
| a-mesosaprobic | a | species occurring in the alpha-meso-saprobic zone (heavily polluted water courses) |
| polysaprobic | p | species occurring in the poly-saprobic zone (extremely heavily polluted water courses) |
| 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% |