Ontologia

Division · LKA

Vavuniya North

Sri Lanka

AwTropical, savannah(100 %)

Species observed

144

Observations

715

Area

761,2km²

Ecological tissue

Sample of 31 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 Vavuniya North : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 3 types (connectance 6.9%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
34
Connectance
0.069
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

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

Species present

144 distinct species · 715 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

715 obs · 11 cellules
Obs. / cellule
≥ 328
126–327
71–125
19–70
< 19

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 466mm

Warmest m°

34,0°C

Coldest m°

21,5°C

Elevation: 65 m on average (min 21 m, max 100 m)

Bioclimatic detailsExpert
Annual mean temp.
27,5°C
Annual rain
1 466mm
Warmest month
34,0°C
Coldest month
21,5°C
Mean alt.
65m
Min
21m
Max
100m
Std. dev.
16m
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

5,8

Org. C

51,5g/kg

Clay

30,1%

Sand

40,3%

Silt

29,6%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,8
Org. C
60,4g/kg
Clay
28,8%
Sand
41,1%
Silt
30,1%
5–15 cm
pH H₂O
5,8
Org. C
49,8g/kg
Clay
29,4%
Sand
41,0%
Silt
29,7%
15–30 cm
pH H₂O
5,8
Org. C
44,3g/kg
Clay
32,2%
Sand
38,8%
Silt
29,0%

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

Land cover

Forest81.7%
Crops7.9%
Built-up0.2%
Bare soil0.1%
Other (grassland, water…)10.0%

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

Hydrology5 basins · 12 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

42,0km

Lake surface here

3,16km²

Basins crossed

5

Max stream order

3

Max drainage

1 876km²

Discharge in basins

5,7m³/s

Mean precip.

1 436mm/an

Mean T°

27,5°C

Moisture idx

-0,02

Mean runoff

417mm/an

Mean elev. (basins)

56m

Watersheds crossing here

Lakes (12, top by area)

3 more lakes

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

21,7%

Pesticides

11,5kg/km²

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

Protected areas12

IUCN Ib · 12🌊 Marine · 1

Nainamadu

IUCN Ib

Reserved Forest · 1921

94 km²

Complete list

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