Ontologia

HydroBASINS lev08 watershed · #7080143230

Bassin de Nass 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 : Kitimat-Stikine

21% lakePfafstetter: 78360030

Sub-basin area

1 121,4km²

Upstream area

14 744,7km²

Discharge

608,28m³/s

Mean elev.

571m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Nass River49 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

323 distinct species · 1 468 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 468 obs · 25 cellules
Obs. / cellule
≥ 554
153–553
42–152
15–41
< 15

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 Nass River : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 108 interactions GloBI sur 5 types (connectance 9.6%, filtre Serrano α=0.2). 17 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
48
Interactions affichées
108
Connectance
0.096
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°

3,3°C

Annual rain

883mm

Moisture idx (CMI)

0,27

Runoff

1 301mm/an

PET

643mm

AET

467mm

Mean slope

8,1°

Water table

234cm

Forest

96%

Crops

0%

Urban

0%

Protected

6%

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