Ontologia

Rivière· 7 segments

Avre

Crosses 1 administrative regions : Somme

rivière

Total length

29km

Max discharge

15m³/s

Max Strahler

4

Segments matched

7

River geography1 admin regions · 27 communes

Parent watershed

hybas-20804326401277 km²

1 administrative regions crossed (GADM L2)

  • Somme
    Hauts-de-France · France
    34.1 km
    in this dpt
27 communes (L5)

9 intersecting protected areas

1 page = 1 named river (aggregation of 7 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 873 distinct species · 25 793 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 37 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 Avre : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 55 interactions GloBI sur 5 types (connectance 8.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
55
Connectance
0.083
Patrimoniales
2
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

29km

Max discharge

15,0m³/s

Max Strahler

4

Segments matched

7

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