Ontologia

Division · LKA

Katuwana

Sri Lanka

AfTropical, rainforest(100 %)

Species observed

121

Observations

160

Area

167,5km²

Ecological tissue

Sample of 27 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 Katuwana : 25 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 20 interactions GloBI sur 3 types (connectance 5.7%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
20
Connectance
0.057
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

121 distinct species · 160 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

160 obs · 3 cellules
Obs. / cellule
≥ 81
81–80
81–80
60–80
< 60

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

Climate

Mean T°

25,8°C

Annual rain

1 976mm

Warmest m°

31,2°C

Coldest m°

20,9°C

Elevation: 167 m on average (min 67 m, max 528 m)

Bioclimatic detailsExpert
Annual mean temp.
25,8°C
Annual rain
1 976mm
Warmest month
31,2°C
Coldest month
20,9°C
Mean alt.
167m
Min
67m
Max
528m
Std. dev.
89m
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

5,1

Org. C

53,2g/kg

Clay

38,9%

Sand

33,4%

Silt

27,8%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,1
Org. C
60,9g/kg
Clay
37,0%
Sand
35,1%
Silt
27,9%
5–15 cm
pH H₂O
5,1
Org. C
52,5g/kg
Clay
37,5%
Sand
34,0%
Silt
28,4%
15–30 cm
pH H₂O
5,2
Org. C
46,3g/kg
Clay
42,1%
Sand
30,9%
Silt
27,0%

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

Land cover

Forest69.4%
Crops5.6%
Built-up1.0%
Bare soil0.5%
Other (grassland, water…)23.5%

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

Hydrology3 basins · 1 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

17,2km

Lake surface here

2,82km²

Basins crossed

3

Max stream order

2

Max drainage

2 513km²

Discharge in basins

1,9m³/s

Mean precip.

1 843mm/an

Mean T°

26,5°C

Moisture idx

0,19

Mean runoff

1 106mm/an

Mean elev. (basins)

98m

Watersheds crossing here

Lakes (1, top by area)

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

Human pressure

Pop. density

4hab/km²

Night light

0,1nW

Built-up

96,3%

Pesticides

12,4kg/km²

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

Protected areas6

IUCN Ib · 6

Meddeniya

IUCN Ib

Reserved Forest · 2009

1 km²

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