Ontologia

HydroBASINS lev08 watershed · #2080265820

Bassin de Полонка

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 3 administrative regions : Dnovskiy rayon, Porkhovskiy rayon, Soletskiy rayon

3% lakePfafstetter: 24326092

Sub-basin area

436,1km²

Upstream area

436,1km²

Discharge

3,66m³/s

Mean elev.

83m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Шелонь15 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

91 distinct species · 108 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

108 obs · 8 cellules
Obs. / cellule
≥ 73
73–72
10–72
2–9
< 2

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

Ecological tissue

Sample of 35 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 Полонка : 31 espèces reliées par 53 interactions GloBI sur 5 types (connectance 8.9%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
53
Connectance
0.089
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°

4,4°C

Annual rain

620mm

Moisture idx (CMI)

0,01

Runoff

256mm/an

PET

614mm

AET

466mm

Mean slope

0,7°

Water table

51cm

Forest

56%

Crops

16%

Urban

0%

Protected

1%

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