Ontologia

Ruisseau· 15 segments

L'Ance

Crosses 4 administrative regions : Haute-Loire, Loire, Lozère, Puy-de-Dôme

ruisseau

Total length

133km

Max discharge

4,8m³/s

Max Strahler

3

Segments matched

15

River geography4 admin regions · 34 communes

Parent watershed

hybas-2080545100540 km²

4 administrative regions crossed (GADM L2)

  • Haute-Loire
    Auvergne-Rhône-Alpes · France
    44.7 km
    in this dpt
  • Puy-de-Dôme
    Auvergne-Rhône-Alpes · France
    20.2 km
    in this dpt
  • Lozère
    Occitanie · France
    13.4 km
    in this dpt
  • Loire
    Auvergne-Rhône-Alpes · France
    2.4 km
    in this dpt
34 communes (L5)

7 intersecting protected areas

1 page = 1 named river (aggregation of 15 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

2 325 distinct species · 42 485 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 35 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'Ance : 30 espèces + 5 bulles famille, 51 interactions GloBI documentées sur 6 types (connectance 8.6%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
35
Interactions affichées
51
Connectance
0.086
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

133km

Max discharge

4,8m³/s

Max Strahler

3

Segments matched

15

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