Ontologia

Rivière· 4 segments

Johnson Run

Crosses 5 administrative regions : Athens, Elk, Fayette, Peoria, Perry

rivière

Total length

32km

Max discharge

54,6m³/s

Max Strahler

5

Segments matched

4

River geography5 admin regions · 0 communes

Parent watershed

hybas-70805606503093 km²

5 administrative regions crossed (GADM L2)

  • Elk
    Pennsylvania · United States
    5.8 km
    in this dpt
  • Fayette
    Pennsylvania · United States
    5.8 km
    in this dpt
  • Peoria
    Illinois · United States
    4.0 km
    in this dpt
  • Athens
    Ohio · United States
    1.2 km
    in this dpt
  • Perry
    Ohio · United States
    0.0 km
    in this dpt

4 intersecting protected areas

1 page = 1 named river (aggregation of 4 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

334 distinct species · 4 367 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 37 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 Johnson Run : 31 espèces reliées par 67 interactions GloBI sur 4 types (connectance 10.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
67
Connectance
0.101
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

32km

Max discharge

54,6m³/s

Max Strahler

5

Segments matched

4

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