Ontologia

Division · LKA

Katharagama

Sri Lanka

AwTropical, savannah(100 %)

Species observed

496

Observations

11 020

Area

537,5km²

Ecological tissue

Sample of 39 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 Katharagama : 36 espèces dont 5 patrimoniales (LR IUCN CR/EN/VU) reliées par 35 interactions GloBI sur 3 types (connectance 4.7%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
35
Connectance
0.047
Patrimoniales
5
Plus dense que (national)0 %(top 100%)

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

Species present

496 distinct species · 11 020 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

11 020 obs · 14 cellules
Obs. / cellule
≥ 2 520
2 242–2 519
1 281–2 241
173–1 280
< 173

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

Climate

Mean T°

27,2°C

Annual rain

1 118mm

Warmest m°

33,6°C

Coldest m°

22,2°C

Elevation: 65 m on average (min 17 m, max 185 m)

Bioclimatic detailsExpert
Annual mean temp.
27,2°C
Annual rain
1 118mm
Warmest month
33,6°C
Coldest month
22,2°C
Mean alt.
65m
Min
17m
Max
185m
Std. dev.
23m
Köppen-Geiger (dominant)
AwTropical, savannah(100 %)Tropical

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

Soil & lithology

pH H₂O

5,7

Org. C

31,9g/kg

Clay

36,8%

Sand

35,1%

Silt

28,2%

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

Dominant lithology: paGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,7
Org. C
45,3g/kg
Clay
35,4%
Sand
35,8%
Silt
28,8%
5–15 cm
pH H₂O
5,7
Org. C
28,4g/kg
Clay
35,2%
Sand
36,1%
Silt
28,7%
15–30 cm
pH H₂O
5,7
Org. C
21,9g/kg
Clay
39,7%
Sand
33,3%
Silt
27,0%

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

Land cover

Forest90.9%
Crops2.7%
Built-up0.3%
Bare soil0.1%
Other (grassland, water…)6.0%

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

Hydrology3 basins · 2 lakes · 5 rivers

Hydrology metrics for this exact territory

Stream length here

78,6km

Lake surface here

0,73km²

Basins crossed

3

Max stream order

4

Max drainage

3 992km²

Discharge in basins

6,2m³/s

Mean precip.

1 407mm/an

Mean T°

26,3°C

Moisture idx

-0,06

Mean runoff

635mm/an

Mean elev. (basins)

156m

Watersheds crossing here

Lakes (2, top by area)

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

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

25,0%

Pesticides

10,7kg/km²

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

Protected areas9

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

Yala NP

IUCN II

National Park · 1970

980 km²

Kumana NP

IUCN II

National Park · 2006

358 km²

Yala

IUCN Ia

Strict Nature Reserve · 1939

219 km²

Complete list

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