Ontologia

Fleuve· 69 segments

Осъм

Crosses 11 administrative regions : Letnitsa, Levski, Lovech, Nikopol, Pleven +6

fleuve

Total length

163km

Max discharge

5 781,2m³/s

Max Strahler

8

Segments matched

69

River geography11 admin regions · 0 communes

Parent watershed

hybas-20805815101177 km²

11 administrative regions crossed (GADM L2)

  • Lovech
    Lovech · Bulgaria
    119.6 km
    in this dpt
  • Levski
    Pleven · Bulgaria
    82.7 km
    in this dpt
  • Nikopol
    Pleven · Bulgaria
    42.2 km
    in this dpt
  • Letnitsa
    Lovech · Bulgaria
    26.5 km
    in this dpt
  • Troyan
    Lovech · Bulgaria
    17.6 km
    in this dpt
  • Pordim
    Pleven · Bulgaria
    16.1 km
    in this dpt
  • Ugarchin
    Lovech · Bulgaria
    8.8 km
    in this dpt
  • Pleven
    Pleven · Bulgaria
    6.1 km
    in this dpt
  • Svishtov
    Veliko Tarnovo · Bulgaria
    0.9 km
    in this dpt
  • Turnu Magurele
    Teleorman · Romania
    0.7 km
    in this dpt
  • Sevlievo
    Gabrovo · Bulgaria
    0.0 km
    in this dpt

21 intersecting protected areas

  • Persina

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Persina

    IUCN V

    Nature Park

  • Nikopolsko plato

    IUCN Not Reported

    Special Protection Area (Birds Directive)

  • Confluența Olt - Dunăre

    IUCN Not Reported

    Special Protection Area (Birds Directive)

  • Nikopolsko plato

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Belene Islands Complex

    IUCN Ia

    Wetland of International Importance (Ramsar Site)

  • Mikre

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Devetashko plato

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Mikre

    IUCN Not Reported

    Special Protection Area (Birds Directive)

12 more protected areas

1 page = 1 named river (aggregation of 69 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

3 distinct species · 19 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 3 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 Осъм : 3 espèces reliées par 2 interactions GloBI sur 1 type (connectance 66.7%, filtre Serrano α=0.2).

Espèces affichées
3
Interactions affichées
2
Connectance
0.667
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

163km

Max discharge

5 781,2m³/s

Max Strahler

8

Segments matched

69

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