Ontologia

District · lka

Batticaloa

Sri Lanka

AwTropical, savannah(79 %)

Species observed

1 340

Observations

5 967

Area

2 470,6km²

Ecological tissue

Sample of 30 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 Batticaloa : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 3 types (connectance 7.6%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
33
Connectance
0.076
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

1 340 distinct species · 5 967 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 967 obs · 44 cellules
Obs. / cellule
≥ 2 022
216–2 021
64–215
19–63
< 19

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

Climate

Mean T°

27,7°C

Annual rain

1 597mm

Warmest m°

34,3°C

Coldest m°

22,6°C

Elevation: 24 m on average (min -13 m, max 155 m)

Bioclimatic detailsExpert
Annual mean temp.
27,7°C
Annual rain
1 597mm
Warmest month
34,3°C
Coldest month
22,6°C
Mean alt.
24m
Min
-13m
Max
155m
Std. dev.
23m
Köppen-Geiger (dominant)
AwTropical, savannah(79 %)Tropical

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

Soil & lithology

pH H₂O

6,0

Org. C

46,6g/kg

Clay

35,6%

Sand

32,0%

Silt

32,4%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,0
Org. C
64,5g/kg
Clay
34,8%
Sand
32,5%
Silt
32,7%
5–15 cm
pH H₂O
6,1
Org. C
39,1g/kg
Clay
35,3%
Sand
32,1%
Silt
32,6%
15–30 cm
pH H₂O
6,1
Org. C
36,1g/kg
Clay
36,6%
Sand
31,4%
Silt
32,1%

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

Land cover

Forest34.9%
Crops28.4%
Built-up1.1%
Bare soil1.3%
Other (grassland, water…)34.3%

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

Hydrology3 basins · 37 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

98,3km

Lake surface here

37,94km²

Basins crossed

3

Max stream order

4

Max drainage

3 118km²

Discharge in basins

19,1m³/s

Mean precip.

1 866mm/an

Mean T°

27,1°C

Moisture idx

0,21

Mean runoff

709mm/an

Mean elev. (basins)

64m

Watersheds crossing here

Lakes (37, top by area)

28 more lakes

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

Human pressure

Pop. density

2hab/km²

Night light

0,3nW

Built-up

108,8%

Pesticides

12,2kg/km²

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

Protected areas14

IUCN Ib · 10IUCN IV · 4🌊 Marine · 2
Complete list

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

Sub-administrations12