Ontologia

Ruisseau· 4 segments

Olef

Crosses 1 administrative regions : Euskirchen

ruisseau

Total length

29km

Max discharge

2,4m³/s

Max Strahler

3

Segments matched

4

River geography1 admin regions · 0 communes

Parent watershed

hybas-20803996502355 km²

1 administrative regions crossed (GADM L2)

  • Euskirchen
    Nordrhein-Westfalen · Germany
    14.4 km
    in this dpt

29 intersecting protected areas

20 more protected areas

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

Species present

1 204 distinct species · 6 363 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 28 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 Olef : 16 espèces reliées par 121 interactions GloBI sur 6 types (connectance 24.4%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
121
Connectance
0.244
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

29km

Max discharge

2,4m³/s

Max Strahler

3

Segments matched

4

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