Ontologia

Rivière· 31 segments

North Fork John Day River

Crosses 4 administrative regions : Grant, Morrow, Umatilla, Wheeler

rivière

Total length

166km

Max discharge

37,4m³/s

Max Strahler

5

Segments matched

31

River geography4 admin regions · 0 communes

Parent watershed

hybas-70804127201528 km²

4 administrative regions crossed (GADM L2)

  • Grant
    Oregon · United States
    89.6 km
    in this dpt
  • Umatilla
    Oregon · United States
    12.7 km
    in this dpt
  • Morrow
    Oregon · United States
    1.8 km
    in this dpt
  • Wheeler
    Oregon · United States
    0.0 km
    in this dpt

5 intersecting protected areas

1 page = 1 named river (aggregation of 31 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

70 distinct species · 84 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 38 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 North Fork John Day River : 34 espèces reliées par 54 interactions GloBI sur 4 types (connectance 7.7%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
54
Connectance
0.077
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

166km

Max discharge

37,4m³/s

Max Strahler

5

Segments matched

31

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