Listes faunistiques invertébrés
Le ruisseau de Létrade à Saint-Avit 04041755
- Télécharger la fiche IRSTEA xls / 82 ko
- Export SEEE csv / 5 ko
| Date prélèvement | 13/04/2022 |
|---|---|
| Méthode | Petit cours d'eau |
| IBG | 17.0 |
| GFI | 9 |
| Variété taxonomique | 32 |
| I2M2 | 0.4905 |
| Substrat | Recouvrement (%) | Définition |
|---|---|---|
| Bryophytes | 77.0 | dominant |
| Hydrophytes | 1.0 | marginal |
| Litieres | ||
| Branchage, racines | ||
| Pierres, galets | ||
| Blocs | 1.0 | marginal |
| Granulats | ||
| Helophytes | 4.0 | marginal |
| Vases | ||
| Sables | 2.0 | marginal |
| Algues | ||
| Dalles, argiles | 15.0 | dominant |
| Microprélèvement | Substrat | Vitesse | Phase |
|---|---|---|---|
| P1 | Hydrophytes | Moyenne | A |
| P2 | Blocs | Lente | A |
| P3 | Helophytes | Lente | A |
| P4 | Sables | Nulle | A |
| P5 | Bryophytes | Moyenne | B |
| P6 | Bryophytes | Lente | B |
| P7 | Bryophytes | Nulle | B |
| P8 | Dalles, argiles | Moyenne | B |
| P9 | Bryophytes | Moyenne | C |
| P10 | Bryophytes | Lente | C |
| P11 | Bryophytes | Nulle | C |
| P12 | Bryophytes | Moyenne | C |
| Taxon | Code SANDRE | A | B | C |
|---|---|---|---|---|
| Physidae | 995 | 1 | ||
| Chironomidae | 807 | 179 | 176 | 152 |
| Ceratopogonidae | 819 | 23 | 8 | 5 |
| Empididae | 831 | 3 | 26 | 6 |
| Asellidae | 880 | 3 | 1 | |
| Gammarus | 892 | 15 | 1 | 1 |
| Hydracarina | 906 | 1 | ||
| Oligochaeta | 933 | 15 | 4 | 4 |
| Hydrobiidae | 973 | 1 | ||
| Simuliidae | 801 | 7 | 6 | 1 |
| Planorbidae | 1009 | 1 | ||
| Ancylus | 1028 | 1 | ||
| Sphaeriidae | 1042 | 8 | ||
| Pisidium | 1043 | 108 | 5 | 3 |
| Polycelis | 1064 | 1 | ||
| Limnephilinae | 3163 | 17 | 1 | 3 |
| Baetis lato sensu | 9794 | 88 | 82 | 50 |
| Physella | 19280 | 1 | ||
| Rhithrogena | 404 | 1 | ||
| Nemurella | 44 | 1 | ||
| Protonemura | 46 | 2 | ||
| Isoperla | 140 | 38 | 102 | 48 |
| Rhyacophila lato-sensu | 183 | 1 | 2 | 1 |
| Hydropsyche | 212 | 6 | 6 | 2 |
| Polycentropus | 231 | 1 | 1 | |
| Silo | 292 | 1 | ||
| Athripsodes | 311 | 5 | 5 | |
| Brachyptera | 3 | 6 | ||
| Ephemerella ignita | 451 | 108 | 180 | 184 |
| Leptophlebiidae | 473 | 1 | ||
| Paraleptophlebia | 481 | 2 | ||
| Ephemera | 502 | 1 | ||
| Hydraena | 608 | 1 | 1 | |
| Calopteryx | 650 | 3 | 1 | |
| Limoniidae | 757 | 1 | ||
| Psychodidae | 783 | 4 | 2 | 2 |