Ruisseau· 2 segments
Oľka
Crosses 4 administrative regions : Humenné, Medzilaborce, Stropkov, Vranov nad Toplou
Total length
43km
Max discharge
1,4m³/s
Max Strahler
2
Segments matched
2
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
- MedzilaborcePrešovský · Slovakia11.1 kmin this dpt
- HumennéPrešovský · Slovakia6.8 kmin this dpt
- Vranov nad ToplouPrešovský · Slovakia4.2 kmin this dpt
- StropkovPrešovský · Slovakia0.0 kmin this dpt
3 intersecting protected areas
Laborecká vrchovina
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Stredný tok Ondavy
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Za hôrkou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
294 distinct species · 1 108 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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).
Indicateurs du tissu écologique
Tissu écologique de Oľka : 13 espèces reliées par 35 interactions GloBI sur 2 types (connectance 13.8%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
43km
Max discharge
1,4m³/s
Max Strahler
2
Segments matched
2
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.