Ontologia

HydroBASINS lev08 watershed · #8080131230

Bassin de Alatna 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

3% lakePfafstetter: 81220205

Sub-basin area

1 177,7km²

Upstream area

4 204km²

Discharge

42,27m³/s

Mean elev.

734m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Alatna River1260 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

423 distinct species · 1 752 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 752 obs · 15 cellules
Obs. / cellule
≥ 675
592–674
41–591
10–40
< 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 46 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 Alatna River : 30 espèces reliées par 109 interactions GloBI sur 5 types (connectance 10.5%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
46
Interactions affichées
109
Connectance
0.105
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°

-11,0°C

Annual rain

329mm

Moisture idx (CMI)

-0,13

Runoff

330mm/an

PET

383mm

AET

274mm

Mean slope

19,4°

Water table

488cm

Forest

5%

Crops

0%

Urban

0%

Protected

75%

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