Ontologia

Distict · BGD

Narayanganj

Bangladesh

CwaTemperate, dry winter, hot summer(58 %)

Species observed

418

Observations

12 866

Area

703,5km²

Ecological tissue

Sample of 33 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 Narayanganj : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 49 interactions GloBI sur 3 types (connectance 9.3%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
49
Connectance
0.093
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

418 distinct species · 12 866 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

12 866 obs · 17 cellules
Obs. / cellule
≥ 8 983
2 375–8 982
162–2 374
71–161
< 71

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

Climate

Mean T°

25,5°C

Annual rain

2 179mm

Warmest m°

32,4°C

Coldest m°

12,8°C

Elevation: 4 m on average (min 0 m, max 10 m)

Bioclimatic detailsExpert
Annual mean temp.
25,5°C
Annual rain
2 179mm
Warmest month
32,4°C
Coldest month
12,8°C
Mean alt.
4m
Min
0m
Max
10m
Std. dev.
1m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, hot summer(58 %)Temperate

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

Soil & lithology

pH H₂O

5,5

Org. C

23,5g/kg

Clay

35,6%

Sand

30,9%

Silt

33,5%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,6
Org. C
25,3g/kg
Clay
32,7%
Sand
32,8%
Silt
34,6%
5–15 cm
pH H₂O
5,5
Org. C
22,3g/kg
Clay
35,0%
Sand
31,1%
Silt
33,9%
15–30 cm
pH H₂O
5,5
Org. C
22,8g/kg
Clay
39,1%
Sand
28,9%
Silt
32,0%

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

Land cover

Forest16.8%
Crops35.7%
Built-up6.3%
Bare soil0.4%
Other (grassland, water…)40.8%

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

Hydrology11 basins · 4 lakes · 9 rivers

Hydrology metrics for this exact territory

Stream length here

100,1km

Lake surface here

0,76km²

Basins crossed

11

Max stream order

7

Max drainage

81 677km²

Discharge in basins

4 215,5m³/s

Mean precip.

2 040mm/an

Mean T°

26,0°C

Moisture idx

0,29

Mean runoff

1 450mm/an

Mean elev. (basins)

9m

Watersheds crossing here

2 more basins

Lakes (4, top by area)

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

Human pressure

Pop. density

40hab/km²

Night light

5,8nW

Built-up

633,6%

Pesticides

15,1kg/km²

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

Protected areas1

IUCN Not Reported · 1

Purbachal

IUCN Not Reported

Special Biodiversity Conservation Area · 2025

1 km²

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

Sub-administrations26