Ontologia

HydroBASINS lev08 watershed · #2080291780

Bassin de Петьялка

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 : Volzhskiy rayon, Vysokogorskiy rayon, Zelenodol'skiy rayon, Zvenigovskiy rayon

Pfafstetter: 28330404

Sub-basin area

491,9km²

Upstream area

491,9km²

Discharge

2,58m³/s

Mean elev.

146m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Илеть16 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

7 intersecting protected areas

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

Species present

1 921 distinct species · 7 491 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

7 491 obs · 14 cellules
Obs. / cellule
≥ 4 454
1 615–4 453
129–1 614
89–128
< 89

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

Ecological tissue

Sample of 33 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 Петьялка : 26 espèces reliées par 71 interactions GloBI sur 5 types (connectance 12.7%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
71
Connectance
0.127
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°

3,3°C

Annual rain

560mm

Moisture idx (CMI)

-0,12

Runoff

162mm/an

PET

636mm

AET

454mm

Mean slope

2,2°

Water table

170cm

Forest

29%

Crops

56%

Urban

0%

Protected

3%

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