Ontologia

HydroBASINS lev08 watershed · #2080400860

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 4 administrative regions : Engel's, Engel'sskiy rayon, Krasnoarmeyskiy rayon, Saratovskiy rayon

259% lakePfafstetter: 28313017

Sub-basin area

1 338,9km²

Upstream area

1 336 545,6km²

Discharge

8 208,65m³/s

Mean elev.

68m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

4 dept-equivalent regions (GADM L2)

12 intersecting protected areas

3 more protected areas

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

Species present

2 125 distinct species · 34 649 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

34 649 obs · 30 cellules
Obs. / cellule
≥ 10 937
4 483–10 936
627–4 482
137–626
< 137

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

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Волга : 20 espèces reliées par 49 interactions GloBI sur 4 types (connectance 16.3%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
25
Interactions affichées
49
Connectance
0.163
Patrimoniales
0
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°

6,6°C

Annual rain

423mm

Moisture idx (CMI)

-0,48

Runoff

84mm/an

PET

814mm

AET

364mm

Mean slope

1,7°

Water table

216cm

Forest

2%

Crops

50%

Urban

22%

Protected

16%

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