Ontologia

Ruisseau· 12 segments

La Druance

Crosses 2 administrative regions : Calvados, Orne

ruisseau

Total length

35km

Max discharge

5,3m³/s

Max Strahler

3

Segments matched

12

River geography2 admin regions · 18 communes

Parent watershed

hybas-2080458420524 km²

2 administrative regions crossed (GADM L2)

  • Calvados
    Normandie · France
    26.8 km
    in this dpt
  • Orne
    Normandie · France
    0.0 km
    in this dpt
18 communes (L5)

1 intersecting protected areas

1 page = 1 named river (aggregation of 12 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

543 distinct species · 12 128 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 30 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 Druance : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 5 types (connectance 18.1%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
84
Connectance
0.181
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

35km

Max discharge

5,3m³/s

Max Strahler

3

Segments matched

12

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