Ontologia

HydroBASINS lev08 watershed · #5080138740

Bassin de Aek Sihapas

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 3 administrative regions : Padang Lawas, Padang Lawas Utara, Tapanuli Selatan

Pfafstetter: 51118080

Sub-basin area

597,7km²

Upstream area

597,7km²

Discharge

26,05m³/s

Mean elev.

494m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Aek Barumun48 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

70 distinct species · 101 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

101 obs · 7 cellules
Obs. / cellule
≥ 62
62–61
9–61
4–8
< 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 12 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 Aek Sihapas : 11 espèces reliées par 8 interactions GloBI sur 3 types (connectance 12.1%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
12
Interactions affichées
8
Connectance
0.121
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°

24,0°C

Annual rain

2 444mm

Moisture idx (CMI)

0,32

Runoff

1 372mm/an

PET

1 655mm

AET

1 569mm

Mean slope

9,3°

Water table

315cm

Forest

25%

Crops

32%

Urban

4%

Protected

12%

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