Ontologia

Regency · IDN

Asahan

Indonesia

AfTropical, rainforest(99 %)

Species observed

412

Observations

670

Area

3 777,9km²

Ecological tissue

Sample of 44 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 Asahan : 42 espèces reliées par 30 interactions GloBI sur 4 types (connectance 3.2%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
30
Connectance
0.032
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

412 distinct species · 670 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

670 obs · 51 cellules
Obs. / cellule
≥ 83
29–82
14–28
5–13
< 5

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

Climate

Mean T°

25,9°C

Annual rain

3 062mm

Warmest m°

29,8°C

Coldest m°

21,7°C

Elevation: 151 m on average (min -1 m, max 2 031 m)

Bioclimatic detailsExpert
Annual mean temp.
25,9°C
Annual rain
3 062mm
Warmest month
29,8°C
Coldest month
21,7°C
Mean alt.
151m
Min
-1m
Max
2 031m
Std. dev.
301m
Köppen-Geiger (dominant)
AfTropical, rainforest(99 %)Tropical

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

5,0

Org. C

66,1g/kg

Clay

36,5%

Sand

33,4%

Silt

30,0%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,0
Org. C
73,4g/kg
Clay
35,2%
Sand
34,5%
Silt
30,2%
5–15 cm
pH H₂O
5,0
Org. C
69,4g/kg
Clay
36,3%
Sand
33,4%
Silt
30,3%
15–30 cm
pH H₂O
5,0
Org. C
55,5g/kg
Clay
38,1%
Sand
32,3%
Silt
29,5%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest82.8%
Crops1.6%
Built-up0.6%
Bare soil0.1%
Other (grassland, water…)15.0%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology13 basins · 0 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

321,0km

Basins crossed

13

Max stream order

5

Max drainage

5 632km²

Discharge in basins

486,8m³/s

Mean precip.

2 188mm/an

Mean T°

25,6°C

Moisture idx

0,23

Mean runoff

1 114mm/an

Mean elev. (basins)

214m

Watersheds crossing here

4 more basins

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

1hab/km²

Night light

0,4nW

Built-up

58,9%

Pesticides

0,6kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas1

IUCN IV · 1

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN

Sub-administrations68