Ontologia

Division · LKA

Walallawita

Sri Lanka

AfTropical, rainforest(100 %)

Species observed

290

Observations

29 343

Area

217,2km²

Ecological tissue

Sample of 21 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 Walallawita : 18 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 16 interactions GloBI sur 3 types (connectance 7.6%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
21
Interactions affichées
16
Connectance
0.076
Patrimoniales
3
Plus dense que (national)0 %(top 100%)

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

Species present

290 distinct species · 29 343 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

29 343 obs · 5 cellules
Obs. / cellule
≥ 27 949
27 949–27 948
817–27 948
310–816
< 310

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

2 809mm

Warmest m°

30,2°C

Coldest m°

22,0°C

Elevation: 72 m on average (min 3 m, max 248 m)

Bioclimatic detailsExpert
Annual mean temp.
25,9°C
Annual rain
2 809mm
Warmest month
30,2°C
Coldest month
22,0°C
Mean alt.
72m
Min
3m
Max
248m
Std. dev.
52m
Köppen-Geiger (dominant)
AfTropical, rainforest(100 %)Tropical

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

Soil & lithology

pH H₂O

5,2

Org. C

77,5g/kg

Clay

36,8%

Sand

30,0%

Silt

33,2%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,2
Org. C
81,9g/kg
Clay
35,4%
Sand
31,1%
Silt
33,5%
5–15 cm
pH H₂O
5,2
Org. C
74,1g/kg
Clay
36,5%
Sand
30,1%
Silt
33,4%
15–30 cm
pH H₂O
5,3
Org. C
76,5g/kg
Clay
38,7%
Sand
28,7%
Silt
32,6%

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

Land cover

Forest78.1%
Crops6.2%
Built-up0.5%
Bare soil0.0%
Other (grassland, water…)15.1%

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

Hydrology3 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

43,4km

Basins crossed

3

Max stream order

4

Max drainage

928km²

Discharge in basins

11,7m³/s

Mean precip.

3 553mm/an

Mean T°

26,5°C

Moisture idx

0,61

Mean runoff

1 485mm/an

Mean elev. (basins)

86m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

2hab/km²

Night light

0,1nW

Built-up

54,4%

Pesticides

13,2kg/km²

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

Protected areas8

IUCN Ia · 4IUCN Ib · 3IUCN Not Reported · 1

Yagirala

IUCN Ib

Reserved Forest · 1926

30 km²

Heycock

IUCN Ib

Reserved Forest · 1936

4 km²

Halwala

IUCN Ia

Conservation Forest · 2007

2 km²

Pelawatta

IUCN Not Reported

Forest Reserve

1 km²

Complete list

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