Ontologia

Commune · IND

Purnia

India

CwaTemperate, dry winter, hot summer(100 %)

Species observed

237

Observations

1 081

Area

3 246km²

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 Purnia : 21 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 43 interactions GloBI sur 3 types (connectance 9.9%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
43
Connectance
0.099
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

237 distinct species · 1 081 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 081 obs · 31 cellules
Obs. / cellule
≥ 292
78–291
24–77
11–23
< 11

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

Climate

Mean T°

25,2°C

Annual rain

1 737mm

Warmest m°

35,4°C

Coldest m°

10,9°C

Elevation: 39 m on average (min 28 m, max 49 m)

Bioclimatic detailsExpert
Annual mean temp.
25,2°C
Annual rain
1 737mm
Warmest month
35,4°C
Coldest month
10,9°C
Mean alt.
39m
Min
28m
Max
49m
Std. dev.
4m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, hot summer(100 %)Temperate

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

Soil & lithology

pH H₂O

6,7

Org. C

14,6g/kg

Clay

25,4%

Sand

32,0%

Silt

42,6%

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

Dominant lithology: suGLiMaggregated to Purnia

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
19,8g/kg
Clay
24,2%
Sand
32,7%
Silt
43,1%
5–15 cm
pH H₂O
6,7
Org. C
13,9g/kg
Clay
24,6%
Sand
32,4%
Silt
43,0%
15–30 cm
pH H₂O
6,8
Org. C
10,2g/kg
Clay
27,4%
Sand
30,8%
Silt
41,8%

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

Land cover

Forest10.7%
Crops73.7%
Built-up2.2%
Bare soil0.6%
Other (grassland, water…)12.8%

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

Hydrology18 basins · 16 lakes · 8 rivers

Hydrology metrics for this exact territory

Stream length here

266,1km

Lake surface here

3,49km²

Basins crossed

18

Max stream order

7

Max drainage

910 191km²

Discharge in basins

4 790,0m³/s

Mean precip.

1 486mm/an

Mean T°

24,7°C

Moisture idx

-0,05

Max snow

1%

Mean runoff

841mm/an

Mean elev. (basins)

69m

Watersheds crossing here

9 more basins

Lakes (16, top by area)

7 more lakes

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

Human pressure

Pop. density

9hab/km²

Night light

1,3nW

Built-up

217,0%

Pesticides

2,1kg/km²

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