Ontologia

HydroBASINS lev08 watershed · #8080160170

Bassin de Little Dall River

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 : Yukon-Koyukuk

8% lakePfafstetter: 81250150

Sub-basin area

990,6km²

Upstream area

499 688,1km²

Discharge

3 227,4m³/s

Mean elev.

230m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Yukon River498 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Yukon Flats

    IUCN IV

    National Wildlife Refuge

    334.01 km² overlap

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

Species present

311 distinct species · 2 270 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 270 obs · 19 cellules
Obs. / cellule
≥ 1 666
168–1 665
16–167
10–15
< 10

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 Little Dall River : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 121 interactions GloBI sur 6 types (connectance 20.3%, filtre Serrano α=0.2). 20 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
121
Connectance
0.203
Patrimoniales
1
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°

-5,4°C

Annual rain

306mm

Moisture idx (CMI)

-0,42

Runoff

142mm/an

PET

532mm

AET

275mm

Mean slope

6,7°

Water table

145cm

Forest

75%

Crops

0%

Urban

0%

Protected

68%

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