Ontologia

Division · LKA

Nanaddan

Sri Lanka

AwTropical, savannah(100 %)

Species observed

344

Observations

27 891

Area

233,6km²

Ecological tissue

Sample of 26 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 Nanaddan : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 3 types (connectance 12.3%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
26
Interactions affichées
40
Connectance
0.123
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Species present

344 distinct species · 27 891 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

27 891 obs · 7 cellules
Obs. / cellule
≥ 22 039
22 039–22 038
1 861–22 038
253–1 860
< 253

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

Climate

Mean T°

27,5°C

Annual rain

1 094mm

Warmest m°

31,1°C

Coldest m°

23,3°C

Elevation: 8 m on average (min -25 m, max 26 m)

Bioclimatic detailsExpert
Annual mean temp.
27,5°C
Annual rain
1 094mm
Warmest month
31,1°C
Coldest month
23,3°C
Mean alt.
8m
Min
-25m
Max
26m
Std. dev.
5m
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

6,2

Org. C

41,0g/kg

Clay

31,4%

Sand

38,5%

Silt

30,1%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,1
Org. C
51,6g/kg
Clay
30,3%
Sand
39,3%
Silt
30,5%
5–15 cm
pH H₂O
6,1
Org. C
34,8g/kg
Clay
31,0%
Sand
38,8%
Silt
30,3%
15–30 cm
pH H₂O
6,2
Org. C
36,7g/kg
Clay
32,8%
Sand
37,4%
Silt
29,7%

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

Land cover

Forest12.4%
Crops59.6%
Built-up0.6%
Bare soil2.5%
Other (grassland, water…)24.9%

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

Hydrology3 basins · 6 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

4,2km

Lake surface here

16,03km²

Basins crossed

3

Max stream order

4

Max drainage

3 345km²

Discharge in basins

4,4m³/s

Mean precip.

1 236mm/an

Mean T°

27,6°C

Moisture idx

-0,13

Mean runoff

305mm/an

Mean elev. (basins)

34m

Watersheds crossing here

Lakes (6, top by area)

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

1hab/km²

Night light

0,2nW

Built-up

55,3%

Pesticides

11,2kg/km²

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

Protected areas4

IUCN Ib · 2IUCN IV · 2🌊 Marine · 2📍 Point sites · 1

Maduroad

IUCN Ib

Reserved Forest · 2012

519 km²

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