Ontologia

Commune · IND

Perambalur

India

AwTropical, savannah(100 %)

Species observed

274

Observations

10 288

Area

1 752,1km²

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 Perambalur : 16 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 35 interactions GloBI sur 3 types (connectance 10.0%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
35
Connectance
0.100
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

274 distinct species · 10 288 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

10 288 obs · 44 cellules
Obs. / cellule
≥ 1 645
535–1 644
212–534
154–211
< 154

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

Climate

Mean T°

28,2°C

Annual rain

964mm

Warmest m°

37,6°C

Coldest m°

19,1°C

Elevation: 139 m on average (min 59 m, max 737 m)

Bioclimatic detailsExpert
Annual mean temp.
28,2°C
Annual rain
964mm
Warmest month
37,6°C
Coldest month
19,1°C
Mean alt.
139m
Min
59m
Max
737m
Std. dev.
76m
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

7,2

Org. C

22,0g/kg

Clay

34,5%

Sand

36,2%

Silt

29,3%

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

Dominant lithology: paGLiMaggregated to Perambalur

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,2
Org. C
35,6g/kg
Clay
32,9%
Sand
37,1%
Silt
30,0%
5–15 cm
pH H₂O
7,2
Org. C
18,0g/kg
Clay
33,8%
Sand
36,7%
Silt
29,5%
15–30 cm
pH H₂O
7,3
Org. C
12,6g/kg
Clay
36,6%
Sand
34,9%
Silt
28,4%

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

Land cover

Forest10.3%
Crops66.5%
Built-up1.0%
Bare soil1.4%
Other (grassland, water…)20.9%

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

Hydrology9 basins · 12 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

73,5km

Lake surface here

3,52km²

Basins crossed

9

Max stream order

3

Max drainage

75 846km²

Discharge in basins

47,6m³/s

Mean precip.

934mm/an

Mean T°

28,2°C

Moisture idx

-0,47

Mean runoff

144mm/an

Mean elev. (basins)

177m

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

3hab/km²

Night light

1,1nW

Built-up

98,7%

Pesticides

4,4kg/km²

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