Ontologia

HydroBASINS lev08 watershed · #2080172440

Bassin de Северная Двина

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 1 administrative regions : Kholmogorskiy rayon

12% lakePfafstetter: 26143010

Sub-basin area

2 578,2km²

Upstream area

300 756,8km²

Discharge

2 769,28m³/s

Mean elev.

31m

Administrative coverage

Hydrographic chain

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Sijskij

    IUCN IV

    State Natural Zakaznik

    16.27 km² overlap

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

Species present

230 distinct species · 345 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

345 obs · 41 cellules
Obs. / cellule
≥ 53
24–52
9–23
4–8
< 4

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 Северная Двина : 33 espèces reliées par 50 interactions GloBI sur 6 types (connectance 6.7%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
50
Connectance
0.068
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°

0,8°C

Annual rain

559mm

Moisture idx (CMI)

0,10

Runoff

292mm/an

PET

506mm

AET

391mm

Mean slope

1,8°

Water table

40cm

Forest

74%

Crops

0%

Urban

0%

Protected

1%

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