Ontologia

HydroBASINS lev08 watershed · #5080062540

Bassin de West Alligator

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 : West Arnhem

Coastal basin 17% lakePfafstetter: 56253900

Sub-basin area

1 699,1km²

Upstream area

1 699,1km²

Discharge

3,97m³/s

Mean elev.

29m

Administrative coverage

1 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Kakadu National Park

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    1685.44 km² overlap

  • Kakadu National Park

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    1679.43 km² overlap

  • Kakadu

    IUCN II

    National Park (Commonwealth)

    1679.43 km² overlap

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

Species present

1 730 distinct species · 19 650 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

19 650 obs · 45 cellules
Obs. / cellule
≥ 3 439
1 243–3 438
403–1 242
157–402
< 157

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

Ecological tissue

Sample of 39 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 West Alligator : 33 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 4 types (connectance 5.4%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
40
Connectance
0.054
Patrimoniales
2
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°

27,6°C

Annual rain

1 406mm

Moisture idx (CMI)

-0,24

Runoff

695mm/an

PET

1 861mm

AET

981mm

Mean slope

0,6°

Water table

68cm

Forest

75%

Crops

0%

Urban

0%

Protected

99%

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