Ontologia

HydroBASINS lev08 watershed · #5080225760

Bassin de South Alligator 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 : West Arnhem

2% lakePfafstetter: 56254070

Sub-basin area

250,2km²

Upstream area

3 570,1km²

Discharge

51,98m³/s

Mean elev.

42m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de South Alligator River295 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Kakadu National Park

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    249.26 km² overlap

  • Kakadu

    IUCN II

    National Park (Commonwealth)

    249.26 km² overlap

  • Kakadu National Park

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    249.26 km² overlap

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

Species present

82 distinct species · 283 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

283 obs · 6 cellules
Obs. / cellule
≥ 142
142–141
50–141
30–49
< 30

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

Ecological tissue

Sample of 31 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 South Alligator River : 27 espèces reliées par 26 interactions GloBI sur 2 types (connectance 5.6%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
26
Connectance
0.056
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°

27,7°C

Annual rain

1 387mm

Moisture idx (CMI)

-0,28

Runoff

592mm/an

PET

1 919mm

AET

998mm

Mean slope

1,2°

Water table

91cm

Forest

41%

Crops

0%

Urban

0%

Protected

100%

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