Ontologia

Commune · IND

Tiruvallur

India

AwTropical, savannah(100 %)

Species observed

392

Observations

3 928

Area

669km²

Ecological tissue

Sample of 34 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 Tiruvallur : 26 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 43 interactions GloBI sur 3 types (connectance 7.7%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
43
Connectance
0.077
Patrimoniales
3
Plus dense que (national)0 %(top 100%)

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

Species present

392 distinct species · 3 928 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 928 obs · 17 cellules
Obs. / cellule
≥ 1 169
852–1 168
212–851
116–211
< 116

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

Climate

Mean T°

28,0°C

Annual rain

1 237mm

Warmest m°

38,0°C

Coldest m°

18,9°C

Elevation: 53 m on average (min 17 m, max 236 m)

Bioclimatic detailsExpert
Annual mean temp.
28,0°C
Annual rain
1 237mm
Warmest month
38,0°C
Coldest month
18,9°C
Mean alt.
53m
Min
17m
Max
236m
Std. dev.
27m
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

7,0

Org. C

22,7g/kg

Clay

35,0%

Sand

36,5%

Silt

28,5%

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

Dominant lithology: suGLiMaggregated to Thiruvallur

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,9
Org. C
32,2g/kg
Clay
32,4%
Sand
38,1%
Silt
29,5%
5–15 cm
pH H₂O
7,0
Org. C
19,5g/kg
Clay
35,2%
Sand
36,2%
Silt
28,6%
15–30 cm
pH H₂O
7,0
Org. C
16,3g/kg
Clay
37,3%
Sand
35,3%
Silt
27,4%

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

Land cover

Forest13.1%
Crops54.4%
Built-up2.0%
Bare soil1.6%
Other (grassland, water…)28.8%

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

Hydrology8 basins · 12 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

83,9km

Lake surface here

3,84km²

Basins crossed

8

Max stream order

5

Max drainage

16 662km²

Discharge in basins

18,4m³/s

Mean precip.

1 110mm/an

Mean T°

28,5°C

Moisture idx

-0,36

Mean runoff

401mm/an

Mean elev. (basins)

46m

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

6hab/km²

Night light

2,8nW

Built-up

205,2%

Pesticides

3,8kg/km²

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