Ontologia

HydroBASINS lev08 watershed · #3080655610

Bassin de Чадан

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 : Chaa-Khol'skiy rayon, Dzun-Khemchikskiy rayon, Ovyurskiy rayon, Sut-Khol'skiy rayon

Pfafstetter: 32267620

Sub-basin area

2 219,4km²

Upstream area

2 219,6km²

Discharge

8,4m³/s

Mean elev.

1 403m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Хемчик14 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

1 043 distinct species · 2 077 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 077 obs · 53 cellules
Obs. / cellule
≥ 823
56–822
15–55
8–14
< 8

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

Ecological tissue

Sample of 25 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 Чадан : 20 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 5 types (connectance 10.3%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
25
Interactions affichées
31
Connectance
0.103
Patrimoniales
2
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°

-4,5°C

Annual rain

366mm

Moisture idx (CMI)

-0,41

Runoff

125mm/an

PET

634mm

AET

324mm

Mean slope

8,7°

Water table

214cm

Forest

53%

Crops

9%

Urban

0%

Protected

0%

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