Ruisseau· 12 segments
L'Aran
Crosses 2 administrative regions : Landes, Pyrénées-Atlantiques
Total length
48km
Max discharge
10,2m³/s
Max Strahler
3
Segments matched
12
River geography2 admin regions · 20 communes
2 administrative regions crossed (GADM L2)
- Pyrénées-AtlantiquesNouvelle-Aquitaine · France36.0 kmin this dpt
- LandesNouvelle-Aquitaine · France0.0 kmin this dpt
20 communes (L5)For countries with L5
- Ayherre6.70 km
- Mendionde6.57 km
- Bardos4.15 km
- La Bastide-Clairence3.66 km
- Hasparren3.18 km
- Saint-Palais2.82 km
- Urt2.69 km
- Aïcirits-Camou-Suhast2.33 km
- Amendeuix-Oneix1.55 km
- Hélette1.49 km
- Bonloc0.90 km
- Gabat0.00 km
- Garris0.00 km
- Luxe-Sumberraute0.00 km
- Macaye0.00 km
- Saint-Laurent-de-Gosse0.00 km
- Guiche0.00 km
- Briscous0.00 km
- Béhasque-Lapiste0.00 km
- Beyrie-sur-Joyeuse0.00 km
5 intersecting protected areas
Barthes de l'Adour
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Barthes de l'Adour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
L'Adour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
La Bidouze (cours d'eau)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
La Joyeuse (cours d'eau)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 12 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
784 distinct species · 4 592 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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'Aran : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 123 interactions GloBI sur 6 types (connectance 16.6%, filtre Serrano α=0.2). 14 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
48km
Max discharge
10,2m³/s
Max Strahler
3
Segments matched
12
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.