Ontologia

HydroBASINS lev08 watershed · #2080285760

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 10 administrative regions : Balakhna, Balakhninskiy rayon, Chkalovskiy rayon, Gorodets, Gorodetskiy rayon +5

116% lakePfafstetter: 28361005

Sub-basin area

1 997,5km²

Upstream area

231 131km²

Discharge

1 462,47m³/s

Mean elev.

104m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

10 dept-equivalent regions (GADM L2)

2 more

8 intersecting protected areas

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

Species present

1 245 distinct species · 4 781 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 781 obs · 56 cellules
Obs. / cellule
≥ 486
206–485
125–205
40–124
< 40

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 107 interactions GloBI sur 5 types (connectance 16.1%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
107
Connectance
0.161
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°

4,3°C

Annual rain

584mm

Moisture idx (CMI)

-0,06

Runoff

190mm/an

PET

623mm

AET

454mm

Mean slope

1,0°

Water table

85cm

Forest

60%

Crops

14%

Urban

4%

Protected

2%

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