Ontologia

Rivière· 20 segments

South Fork John Day River

Crosses 2 administrative regions : Grant, Harney

rivière

Total length

103km

Max discharge

2,6m³/s

Max Strahler

4

Segments matched

20

River geography2 admin regions · 0 communes

Parent watershed

hybas-70804281601579 km²

2 administrative regions crossed (GADM L2)

  • Grant
    Oregon · United States
    56.8 km
    in this dpt
  • Harney
    Oregon · United States
    3.2 km
    in this dpt

4 intersecting protected areas

1 page = 1 named river (aggregation of 20 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

78 distinct species · 300 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 31 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 South Fork John Day River : 24 espèces reliées par 46 interactions GloBI sur 4 types (connectance 9.9%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
46
Connectance
0.099
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

103km

Max discharge

2,6m³/s

Max Strahler

4

Segments matched

20

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