Ruisseau· 13 segments
L'Arguenon
Crosses 1 administrative regions : Côtes-d'Armor
Total length
60km
Max discharge
7,4m³/s
Max Strahler
3
Segments matched
13
River geography1 admin regions · 20 communes
1 administrative regions crossed (GADM L2)
- Côtes-d'ArmorBretagne · France59.8 kmin this dpt
20 communes (L5)For countries with L5
- Plénée-Jugon11.42 km
- Jugon-les-Lacs7.44 km
- Plédéliac7.13 km
- Plorec-sur-Arguenon5.68 km
- Bourseul4.50 km
- Le Gouray4.28 km
- Plancoët3.58 km
- Pluduno3.40 km
- Dolo2.79 km
- Créhen2.64 km
- Saint-Lormel2.55 km
- Corseul2.48 km
- Pléven0.78 km
- Plestan0.44 km
- Saint-Cast-le-Guildo0.42 km
- Saint-Michel-de-Plélan0.25 km
- Tramain0.00 km
- Saint-Méloir-des-Bois0.00 km
- Saint-Jacut-de-la-Mer0.00 km
- Trégon0.00 km
3 intersecting protected areas
Regional Nature Park
Special Areas of Conservation (Habitats Directive)
Baie de l\'arguenon
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1 page = 1 named river (aggregation of 13 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
376 distinct species · 1 681 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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'Arguenon : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 124 interactions GloBI sur 6 types (connectance 14.4%, filtre Serrano α=0.2). 11 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
60km
Max discharge
7,4m³/s
Max Strahler
3
Segments matched
13
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.