Ontologia

HydroBASINS lev08 watershed · #2080305470

Bassin de Обаль

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 5 administrative regions across 2 countries : Haradok, Nevel'skiy rayon, Polatsak, Shumilina, Vitebsk

19% lakePfafstetter: 24280720

Sub-basin area

2 642,8km²

Upstream area

2 642,9km²

Discharge

20,8m³/s

Mean elev.

166m

Administrative coverage

Hydrographic chain

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Kozyanskiy

    IUCN IV

    Nature Sanctuary or Partial Reserve

    374.60 km² overlap

  • Kozyansky

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    250.53 km² overlap

  • Bolshoe Ostrovito

    IUCN IV

    Nature Sanctuary or Partial Reserve

    4.30 km² overlap

  • Drozbitka-Svina

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    1.30 km² overlap

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

Species present

755 distinct species · 1 340 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 340 obs · 60 cellules
Obs. / cellule
≥ 402
58–401
14–57
5–13
< 5

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

Ecological tissue

Sample of 39 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 Обаль : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 87 interactions GloBI sur 4 types (connectance 11.7%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
87
Connectance
0.117
Patrimoniales
1
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°

5,1°C

Annual rain

650mm

Moisture idx (CMI)

0,00

Runoff

238mm/an

PET

650mm

AET

495mm

Mean slope

0,9°

Water table

81cm

Forest

54%

Crops

20%

Urban

1%

Protected

14%

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