Ontologia

HydroBASINS lev08 watershed · #8080255560

Bassin de Matanuska 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 : Matanuska-Susitna

Pfafstetter: 81130803

Sub-basin area

416,1km²

Upstream area

4 199,4km²

Discharge

54,36m³/s

Mean elev.

1 128m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

215 distinct species · 1 514 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 514 obs · 8 cellules
Obs. / cellule
≥ 1 380
1 380–1 379
5–1 379
4–4
< 4

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 Matanuska River : 34 espèces reliées par 78 interactions GloBI sur 6 types (connectance 6.4%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
50
Interactions affichées
78
Connectance
0.064
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°

-3,5°C

Annual rain

557mm

Moisture idx (CMI)

0,24

Runoff

735mm/an

PET

422mm

AET

342mm

Mean slope

24,1°

Water table

727cm

Forest

8%

Crops

0%

Urban

0%

Protected

3%

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