Ontologia

Rivière· 19 segments

L'Alagnon

Crosses 3 administrative regions : Cantal, Haute-Loire, Puy-de-Dôme

rivière

Total length

91km

Max discharge

16,5m³/s

Max Strahler

4

Segments matched

19

River geography3 admin regions · 34 communes

Parent watershed

hybas-20805418201046 km²

3 administrative regions crossed (GADM L2)

  • Cantal
    Auvergne-Rhône-Alpes · France
    52.9 km
    in this dpt
  • Haute-Loire
    Auvergne-Rhône-Alpes · France
    12.3 km
    in this dpt
  • Puy-de-Dôme
    Auvergne-Rhône-Alpes · France
    6.2 km
    in this dpt
34 communes (L5)

12 intersecting protected areas

3 more protected areas

1 page = 1 named river (aggregation of 19 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

4 200 distinct species · 95 650 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 28 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de L'Alagnon : 23 espèces + 5 bulles famille, 44 interactions GloBI documentées sur 7 types (connectance 11.6%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
28
Interactions affichées
44
Connectance
0.116
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)

Total length

91km

Max discharge

16,5m³/s

Max Strahler

4

Segments matched

19

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.