Ontologia

Ruisseau· 4 segments

La Lévrière

Crosses 2 administrative regions : Eure, Seine-Maritime

ruisseau

Total length

28km

Max discharge

1,9m³/s

Max Strahler

3

Segments matched

4

River geography2 admin regions · 20 communes

Parent watershed

hybas-20804532401480 km²

2 administrative regions crossed (GADM L2)

  • Eure
    Normandie · France
    29.9 km
    in this dpt
  • Seine-Maritime
    Normandie · France
    6.1 km
    in this dpt
20 communes (L5)

1 page = 1 named river (aggregation of 4 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

447 distinct species · 1 647 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 40 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 La Lévrière : 32 espèces reliées par 99 interactions GloBI sur 7 types (connectance 12.7%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
99
Connectance
0.127
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

28km

Max discharge

1,9m³/s

Max Strahler

3

Segments matched

4

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