Ontologia

HydroBASINS lev08 watershed · #2080577630

Bassin de Осъм

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 7 administrative regions : Belene, Letnitsa, Levski, Nikopol, Pleven +2

Pfafstetter: 22735083

Sub-basin area

580,6km²

Upstream area

2 599,4km²

Discharge

14,07m³/s

Mean elev.

111m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Осъм157 km²

▲ Receives from 2 basins

7 dept-equivalent regions (GADM L2)

6 intersecting protected areas

  • Obnova - Karaman dol

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    86.59 km² overlap

  • Obnova

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    54.23 km² overlap

  • Nikopolsko plato

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    44.98 km² overlap

  • Nikopolsko plato

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    42.16 km² overlap

  • Eliata

    IUCN VI

    Protected Site

    0.33 km² overlap

  • Meshovata gora

    IUCN VI

    Protected Site

    0.06 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

417 distinct species · 1 972 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 972 obs · 15 cellules
Obs. / cellule
≥ 306
233–305
180–232
134–179
< 134

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

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 Bassin de Осъм : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 110 interactions GloBI sur 5 types (connectance 15.6%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
110
Connectance
0.157
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

11,3°C

Annual rain

579mm

Moisture idx (CMI)

-0,42

Runoff

112mm/an

PET

1 005mm

AET

493mm

Mean slope

2,0°

Water table

231cm

Forest

0%

Crops

64%

Urban

3%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)