Ontologia

Rivière· 42 segments

La Vire

Crosses 2 administrative regions : Calvados, Manche

rivière

Total length

139km

Max discharge

46,2m³/s

Max Strahler

4

Segments matched

42

River geography2 admin regions · 73 communes

Parent watershed

hybas-20800219901958 km²

2 administrative regions crossed (GADM L2)

  • Manche
    Normandie · France
    78.0 km
    in this dpt
  • Calvados
    Normandie · France
    56.8 km
    in this dpt
73 communes (L5)

9 intersecting protected areas

1 page = 1 named river (aggregation of 42 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

464 distinct species · 1 443 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 La Vire : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 103 interactions GloBI sur 5 types (connectance 15.5%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
103
Connectance
0.155
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

139km

Max discharge

46,2m³/s

Max Strahler

4

Segments matched

42

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