Ontologia

HydroBASINS lev08 watershed · #2080233300

Bassin de Сямжена

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 : Sokol'skiy rayon, Syamzhenskiy rayon, Totemskiy rayon

6% lakePfafstetter: 26146940

Sub-basin area

1 891,9km²

Upstream area

1 891,9km²

Discharge

17,5m³/s

Mean elev.

174m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Сима925 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Ust`-Reckij

    IUCN IV

    State Natural Zakaznik

    163.88 km² overlap

  • SHichengskij

    IUCN IV

    State Natural Zakaznik

    140.67 km² overlap

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

Species present

1 289 distinct species · 6 260 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 260 obs · 15 cellules
Obs. / cellule
≥ 5 108
422–5 107
43–421
22–42
< 22

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 Сямжена : 29 espèces reliées par 34 interactions GloBI sur 4 types (connectance 5.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
34
Connectance
0.051
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°

2,0°C

Annual rain

625mm

Moisture idx (CMI)

0,08

Runoff

294mm/an

PET

576mm

AET

444mm

Mean slope

1,7°

Water table

57cm

Forest

90%

Crops

4%

Urban

0%

Protected

18%

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