Ontologia

HydroBASINS lev08 watershed · #8080109920

Bassin de Nigu 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 3 administrative regions : North Slope, Northwest Arctic, Yukon-Koyukuk

3% lakePfafstetter: 81380809

Sub-basin area

557,2km²

Upstream area

557,2km²

Discharge

4,14m³/s

Mean elev.

1 068m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Nigu River784 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

48 distinct species · 139 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

139 obs · 7 cellules
Obs. / cellule
≥ 53
53–52
22–52
17–21
< 17

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

Ecological tissue

Sample of 21 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 Nigu River : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 1 type (connectance 14.3%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
21
Interactions affichées
30
Connectance
0.143
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°

-13,1°C

Annual rain

282mm

Moisture idx (CMI)

-0,01

Runoff

264mm/an

PET

285mm

AET

225mm

Mean slope

14,8°

Water table

362cm

Forest

0%

Crops

0%

Urban

0%

Protected

92%

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