Ontologia

Fleuve· 441 segments

Ока

Crosses 55 administrative regions : Aleksinskiy rayon, Arsen'evskiy rayon, Artinskiy rayon, Belevskiy rayon, Bogorodskiy rayon +50

fleuve

Total length

3 331km

Max discharge

1 332,8m³/s

Max Strahler

8

Segments matched

441

River geography55 admin regions · 0 communes

Parent watershed

hybas-20803226202330 km²

55 administrative regions crossed (GADM L2)

30 intersecting protected areas

21 more protected areas

1 page = 1 named river (aggregation of 441 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

13 distinct species · 18 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 11 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 Ока : 11 espèces reliées par 8 interactions GloBI sur 2 types (connectance 14.5%, filtre Serrano α=0.2).

Espèces affichées
11
Interactions affichées
8
Connectance
0.145
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

3 331km

Max discharge

1 332,8m³/s

Max Strahler

8

Segments matched

441

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