Ontologia

HydroBASINS lev08 watershed · #2080318240

Bassin de Варнава

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 8 administrative regions : Ardatovskiy rayon, Ermishevskiy rayon, Kadomskiy rayon, Kulebakskiy rayon, Temnikovskiy rayon +3

Pfafstetter: 28380530

Sub-basin area

1 564,4km²

Upstream area

19 845,3km²

Discharge

90,96m³/s

Mean elev.

135m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Мокша155 km²

▲ Receives from 2 basins

8 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

1 063 distinct species · 3 078 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 078 obs · 36 cellules
Obs. / cellule
≥ 472
204–471
97–203
47–96
< 47

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 Варнава : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 81 interactions GloBI sur 5 types (connectance 10.4%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
81
Connectance
0.104
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

575mm

Moisture idx (CMI)

-0,14

Runoff

137mm/an

PET

669mm

AET

465mm

Mean slope

0,9°

Water table

96cm

Forest

47%

Crops

30%

Urban

1%

Protected

0%

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