Listes faunistiques invertébrés
L'Alzou à Villefranche de Rouergue 05126060
- Télécharger la fiche IRSTEA xls / 618 ko
- Export SEEE csv / 8 ko
| Date prélèvement | 10/07/2023 |
|---|---|
| Méthode | Petit cours d'eau |
| IBG | 17.0 |
| GFI | 8 |
| Variété taxonomique | 35 |
| I2M2 | 0.5807 |
| Substrat | Recouvrement (%) | Définition |
|---|---|---|
| Bryophytes | 1.0 | marginal |
| Hydrophytes | 0.0 | marginal |
| Litieres | 1.0 | marginal |
| Branchage, racines | 3.0 | marginal |
| Pierres, galets | 46.0 | dominant |
| Blocs | 6.0 | dominant |
| Granulats | 0.0 | marginal |
| Helophytes | 0.0 | marginal |
| Vases | 0.0 | marginal |
| Sables | 1.0 | marginal |
| Algues | 9.0 | dominant |
| Dalles, argiles | 33.0 | dominant |
| Microprélèvement | Substrat | Vitesse | Phase |
|---|---|---|---|
| P1 | Bryophytes | Lente | A |
| P2 | Litieres | Nulle | A |
| P3 | Branchage, racines | Nulle | A |
| P4 | Sables | Nulle | A |
| P5 | Pierres, galets | Nulle | B |
| P6 | Blocs | Lente | B |
| P7 | Algues | Lente | B |
| P8 | Dalles, argiles | Lente | B |
| P9 | Pierres, galets | Lente | C |
| P10 | Pierres, galets | Moyenne | C |
| P11 | Dalles, argiles | Moyenne | C |
| P12 | Pierres, galets | Nulle | C |
| Taxon | Code SANDRE | A | B | C |
|---|---|---|---|---|
| Ancylus | 1028 | 11 | 17 | 81 |
| Notonecta | 730 | 1 | ||
| Gerridae | 734 | 1 | ||
| Simuliidae | 801 | 1 | ||
| Chironomidae | 807 | 154 | 53 | 37 |
| Empididae | 831 | 1 | ||
| Anthomyidae | 847 | 2 | ||
| Pacifastacus | 872 | 2 | 1 | |
| Gammarus | 892 | 34 | 1 | 13 |
| Hydracarina | 906 | 10 | 2 | 13 |
| Oligochaeta | 933 | 3 | 2 | 5 |
| Potamopyrgus | 978 | 1 | 3 | |
| Planorbidae | 1009 | 4 | ||
| Micronecta | 719 | 4 | 4 | |
| Sphaeriidae | 1042 | 3 | ||
| Sphaerium | 1044 | 1 | ||
| Bryozoa | 1087 | 1 | ||
| Crangonyx | 5116 | 33 | 9 | 18 |
| Serratella | 5152 | 3 | 1 | 2 |
| Rhyacophila stricto-sensu | 5237 | 4 | ||
| Baetis lato sensu | 9794 | 21 | 2 | 13 |
| Physella | 19280 | 3 | ||
| Hexatomini | 20358 | 1 | ||
| Limoniini | 20393 | 1 | ||
| Leuctra geniculata | 33830 | 8 | ||
| Heptageniidae | 399 | 2 | ||
| Agapetus | 191 | 1 | ||
| Hydroptila | 200 | 3 | 2 | 4 |
| Hydropsyche | 212 | 2 | 16 | 16 |
| Cheumatopsyche | 221 | 2 | 13 | 28 |
| Cyrnus | 224 | 2 | ||
| Polycentropus | 231 | 1 | 7 | 25 |
| Psychomyia | 239 | 1 | 6 | |
| Oligoplectrum | 263 | 12 | 3 | |
| Silo | 292 | 6 | 3 | 2 |
| Athripsodes | 311 | 4 | ||
| Ceraclea | 313 | 1 | ||
| Centroptilum | 383 | 6 | ||
| Leuctra | 69 | 1 | 2 | 164 |
| Ecdyonurus | 421 | 9 | 26 | |
| Caenis | 457 | 19 | 7 | 3 |
| Leptophlebiidae | 473 | 1 | 3 | |
| Ephemera | 502 | 1 | 2 | |
| Hydraena | 608 | 2 | ||
| Elmis | 618 | 7 | 3 | 6 |
| Esolus | 619 | 4 | 2 | 56 |
| Oulimnius | 622 | 1 | ||
| Limnius | 623 | 1 | ||
| Riolus | 625 | 2 | 1 | |
| Calopteryx | 650 | 1 |