Ontologia

HydroBASINS lev08 watershed · #3080449160

Bassin de Олёкма

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 : Olekminskiy rayon

Pfafstetter: 34263307

Sub-basin area

1 654km²

Upstream area

111 769,7km²

Discharge

1 057,57m³/s

Mean elev.

400m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Олёкма8 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Olekminskij

    IUCN Ia

    State Natural Zapovednik

    191.67 km² overlap

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

Species present

193 distinct species · 2 180 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 180 obs · 10 cellules
Obs. / cellule
≥ 2 112
2 112–2 111
9–2 111
5–8
< 5

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

Ecological tissue

Sample of 48 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 Олёкма : 37 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 5 types (connectance 7.4%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
48
Interactions affichées
84
Connectance
0.074
Patrimoniales
4
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°

-6,7°C

Annual rain

361mm

Moisture idx (CMI)

-0,37

Runoff

214mm/an

PET

573mm

AET

319mm

Mean slope

5,2°

Water table

150cm

Forest

98%

Crops

0%

Urban

0%

Protected

9%

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