Ontologia

HydroBASINS lev08 watershed · #5080141350

Bassin de Batang Angkola

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 : Mandailing Natal, Padang Lawas, Padang Lawas Utara, Padangsidimpuan, Tapanuli Selatan

Pfafstetter: 51112006

Sub-basin area

1 016,8km²

Upstream area

1 016,8km²

Discharge

47,56m³/s

Mean elev.

538m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Batang Gadis802 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

345 distinct species · 1 031 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 031 obs · 12 cellules
Obs. / cellule
≥ 702
118–701
73–117
8–72
< 8

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

Ecological tissue

Sample of 33 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 Batang Angkola : 27 espèces reliées par 33 interactions GloBI sur 4 types (connectance 5.5%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
33
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°

23,8°C

Annual rain

2 716mm

Moisture idx (CMI)

0,39

Runoff

1 457mm/an

PET

1 654mm

AET

1 613mm

Mean slope

10,3°

Water table

255cm

Forest

39%

Crops

28%

Urban

13%

Protected

57%

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