Ontologia

Rivière· 8 segments

L'Avre

Crosses 1 administrative regions : Somme

rivière

Total length

89km

Max discharge

15,4m³/s

Max Strahler

4

Segments matched

8

River geography1 admin regions · 26 communes

Parent watershed

hybas-20804326401277 km²

1 administrative regions crossed (GADM L2)

  • Somme
    Hauts-de-France · France
    26.2 km
    in this dpt
26 communes (L5)

6 intersecting protected areas

1 page = 1 named river (aggregation of 8 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 178 distinct species · 8 707 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 L'Avre : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 111 interactions GloBI sur 6 types (connectance 14.2%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
111
Connectance
0.142
Patrimoniales
1
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

89km

Max discharge

15,4m³/s

Max Strahler

4

Segments matched

8

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