Ontologia

HydroBASINS lev08 watershed · #2080270010

Bassin de Северка

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 : Dedovichskiy rayon, Dnovskiy rayon, Poddorskiy rayon, Volotovskiy rayon

17% lakePfafstetter: 24326099

Sub-basin area

880,6km²

Upstream area

880,6km²

Discharge

7,9m³/s

Mean elev.

94m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Шелонь33 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Dedovichskij

    IUCN IV

    State Natural Zoological Zakaznik

    52.53 km² overlap

  • Dnovskij

    IUCN IV

    State Natural Zoological Zakaznik

    38.34 km² overlap

  • Boloto Dolzhinskoe

    IUCN IV

    State Natural Zakaznik

    28.56 km² overlap

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

Species present

4 distinct species · 6 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 obs · 5 cellules
Obs. / cellule
≥ 2
2–1
1–1
1–0
< 1

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

Ecological tissue

Sample of 2 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 Северка : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2).

Espèces affichées
2
Interactions affichées
1
Connectance
1.000
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

613mm

Moisture idx (CMI)

-0,01

Runoff

263mm/an

PET

621mm

AET

470mm

Mean slope

0,8°

Water table

46cm

Forest

77%

Crops

3%

Urban

0%

Protected

14%

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