Ontologia

Division · LKA

Siyambalanduwa

Sri Lanka

AwTropical, savannah(76 %)

Species observed

129

Observations

391

Area

1 074,5km²

Ecological tissue

Sample of 41 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 Siyambalanduwa : 41 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 3 types (connectance 4.0%, filtre Serrano α=0.2).

Espèces affichées
41
Interactions affichées
33
Connectance
0.040
Patrimoniales
4
Plus dense que (national)0 %(top 100%)

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

Species present

129 distinct species · 391 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

391 obs · 23 cellules
Obs. / cellule
≥ 98
43–97
15–42
8–14
< 8

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

Climate

Mean T°

27,1°C

Annual rain

1 390mm

Warmest m°

34,4°C

Coldest m°

21,6°C

Elevation: 104 m on average (min 31 m, max 768 m)

Bioclimatic detailsExpert
Annual mean temp.
27,1°C
Annual rain
1 390mm
Warmest month
34,4°C
Coldest month
21,6°C
Mean alt.
104m
Min
31m
Max
768m
Std. dev.
61m
Köppen-Geiger (dominant)
AwTropical, savannah(76 %)Tropical

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

Soil & lithology

pH H₂O

5,6

Org. C

34,1g/kg

Clay

34,4%

Sand

37,5%

Silt

28,2%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,6
Org. C
47,4g/kg
Clay
32,8%
Sand
38,5%
Silt
28,8%
5–15 cm
pH H₂O
5,6
Org. C
32,8g/kg
Clay
33,4%
Sand
38,1%
Silt
28,5%
15–30 cm
pH H₂O
5,6
Org. C
22,0g/kg
Clay
36,9%
Sand
35,8%
Silt
27,3%

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

Land cover

Forest59.2%
Crops16.8%
Built-up0.3%
Bare soil0.3%
Other (grassland, water…)23.3%

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

Hydrology2 basins · 6 lakes · 17 rivers

Hydrology metrics for this exact territory

Stream length here

177,6km

Lake surface here

11,77km²

Basins crossed

2

Max stream order

4

Max drainage

3 992km²

Discharge in basins

2,8m³/s

Mean precip.

1 581mm/an

Mean T°

26,6°C

Moisture idx

0,05

Mean runoff

602mm/an

Mean elev. (basins)

114m

Watersheds crossing here

Lakes (6, top by area)

Rivers / streams (17, ord ≥ 4)

5 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

30,9%

Pesticides

12,1kg/km²

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

Protected areas13

IUCN Ib · 5IUCN II · 3IUCN Ia · 2IUCN IV · 2IUCN VI · 1🌊 Marine · 3

Yala NP

IUCN II

National Park · 1970

980 km²

Kumbukkan

IUCN Ia

Conservation Forest · 2009

383 km²

Kumana NP

IUCN II

National Park · 2006

358 km²

Gal Oya

IUCN II

National Park · 1954

343 km²

Complete list

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