Ontologia

HydroBASINS lev08 watershed · #2080315450

Bassin de Ока

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 2 administrative regions : Shilovskiy rayon, Spasskiy rayon

20% lakePfafstetter: 28391009

Sub-basin area

31,6km²

Upstream area

123 629,5km²

Discharge

711,59m³/s

Mean elev.

88m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Ока778 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Ryazanskij

    IUCN IV

    State Natural Zakaznik

    5.71 km² overlap

  • Okskiy

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    4.09 km² overlap

  • Oka & Pra River Floodplains

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    2.27 km² overlap

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

Species present

459 distinct species · 807 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

807 obs · 1 cellules
Obs. / cellule
≥ 807
807–806
807–806
807–806
< 807

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

Ecological tissue

Sample of 38 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 Ока : 25 espèces reliées par 58 interactions GloBI sur 5 types (connectance 7.8%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
58
Connectance
0.078
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°

4,9°C

Annual rain

584mm

Moisture idx (CMI)

-0,15

Runoff

183mm/an

PET

684mm

AET

478mm

Mean slope

0,3°

Water table

13cm

Forest

40%

Crops

21%

Urban

0%

Protected

13%

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