Ontologia

HydroBASINS lev08 watershed · #4080021360

Bassin de Sungai Arau

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 5 administrative regions across 2 countries : Khuan Don, Kubang Pasu, Muang Satun, Perlis, Sadao

13% lakePfafstetter: 44407502

Sub-basin area

719,8km²

Upstream area

719,8km²

Discharge

22,79m³/s

Mean elev.

65m

Administrative coverage

5 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

1 294 distinct species · 20 613 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

20 613 obs · 19 cellules
Obs. / cellule
≥ 3 448
3 299–3 447
1 914–3 298
611–1 913
< 611

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

Ecological tissue

Sample of 27 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 Sungai Arau : 20 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 32 interactions GloBI sur 3 types (connectance 9.1%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
32
Connectance
0.091
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°

27,0°C

Annual rain

1 974mm

Moisture idx (CMI)

0,15

Runoff

999mm/an

PET

1 666mm

AET

1 376mm

Mean slope

3,5°

Water table

146cm

Forest

6%

Crops

27%

Urban

28%

Protected

3%

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