Rivière· 50 segments
L'Aulne
Crosses 2 administrative regions : Côtes-d'Armor, Finistère
Total length
133km
Max discharge
55,3m³/s
Max Strahler
5
Segments matched
50
River geography2 admin regions · 31 communes
2 administrative regions crossed (GADM L2)
- FinistèreBretagne · France140.1 kmin this dpt
- Côtes-d'ArmorBretagne · France10.1 kmin this dpt
31 communes (L5)For countries with L5
- Châteauneuf-du-Faou16.19 km
- Poullaouen14.59 km
- Gouézec12.58 km
- Spézet12.57 km
- Châteaulin8.62 km
- Lothey7.83 km
- Landeleau7.32 km
- Plonévez-du-Faou7.17 km
- Pleyben6.14 km
- Plouyé6.01 km
- Bolazec5.86 km
- Saint-Goazec5.25 km
- Plourac'h4.93 km
- Saint-Ségal4.48 km
- Laz3.47 km
- Locmaria-Berrien3.29 km
- Saint-Coulitz2.92 km
- Lennon2.87 km
- Cléden-Poher2.78 km
- Port-Launay2.73 km
- Lohuec2.70 km
- Saint-Thois2.63 km
- Carnoët2.44 km
- Kergloff1.98 km
- Edern1.61 km
- Dinéault0.53 km
- Scrignac0.51 km
- Briec0.10 km
- Saint-Hernin0.03 km
- Pont-de-Buis-lès-Quimerch0.02 km
- Plomodiern0.00 km
5 intersecting protected areas
Armorique
IUCN VRegional Nature Park
Rade de Brest : Baie de Daoulas, Anse de Poulmic
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallée de l'Aulne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Carrière du Milin ar Stang
IUCN Not ReportedGeotope Protection Order
Biotope Protection Order
1 page = 1 named river (aggregation of 50 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
520 distinct species · 1 835 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de L'Aulne : 26 espèces reliées par 81 interactions GloBI sur 4 types (connectance 18.6%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
133km
Max discharge
55,3m³/s
Max Strahler
5
Segments matched
50
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.