Ontologia

HydroBASINS lev08 watershed · #2080347360

Bassin de Волга

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 2 administrative regions : Samara, Volzhskiy rayon

3% lakePfafstetter: 28317010

Sub-basin area

236,1km²

Upstream area

1 218 995,3km²

Discharge

7 785,88m³/s

Mean elev.

106m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Волга1763 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

  • Volzhskiy rayon
    Samara · Russia
    197.4 km²
    83.3% of basin
  • Samara
    Samara · Russia
    39.7 km²
    16.7% of basin

6 intersecting protected areas

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

Species present

1 066 distinct species · 6 881 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 881 obs · 5 cellules
Obs. / cellule
≥ 2 547
2 547–2 546
2 143–2 546
1 606–2 142
< 1 606

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

Ecological tissue

Sample of 36 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 Волга : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 93 interactions GloBI sur 4 types (connectance 14.8%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
93
Connectance
0.148
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°

4,5°C

Annual rain

527mm

Moisture idx (CMI)

-0,26

Runoff

103mm/an

PET

709mm

AET

444mm

Mean slope

3,0°

Water table

176cm

Forest

48%

Crops

1%

Urban

35%

Protected

35%

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