Ontologia

Subdivision · BGD

Char Janajat

Bangladesh

AwTropical, savannah(100 %)

Species observed

34

Observations

34

Area

37,2km²

Ecological tissue

Sample of 15 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 Char Janajat : 13 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 10 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
15
Interactions affichées
10
Connectance
0.095
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

34 distinct species · 34 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

34 obs · 1 cellules
Obs. / cellule
≥ 34
34–33
34–33
34–33
< 34

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

Climate

Mean T°

25,8°C

Annual rain

2 043mm

Warmest m°

32,8°C

Coldest m°

13,9°C

Elevation: 4 m on average (min 2 m, max 6 m)

Bioclimatic detailsExpert
Annual mean temp.
25,8°C
Annual rain
2 043mm
Warmest month
32,8°C
Coldest month
13,9°C
Mean alt.
4m
Min
2m
Max
6m
Std. dev.
1m
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

5,5

Org. C

28,6g/kg

Clay

28,7%

Sand

23,3%

Silt

47,9%

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

Dominant lithology: suGLiMaggregated to Madaripur

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,6
Org. C
24,6g/kg
Clay
26,5%
Sand
24,7%
Silt
48,8%
5–15 cm
pH H₂O
5,5
Org. C
29,2g/kg
Clay
27,9%
Sand
23,7%
Silt
48,4%
15–30 cm
pH H₂O
5,5
Org. C
32,2g/kg
Clay
31,8%
Sand
21,5%
Silt
46,7%

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

Land cover

Forest1.2%
Crops41.2%
Built-up0.6%
Bare soil4.0%
Other (grassland, water…)53.0%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

7,7km

Basins crossed

2

Max stream order

9

Max drainage

1 485 848km²

Discharge in basins

1 007,1m³/s

Mean precip.

1 855mm/an

Mean T°

25,6°C

Moisture idx

0,20

Mean runoff

1 295mm/an

Mean elev. (basins)

6m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

4hab/km²

Night light

0,0nW

Built-up

61,4%

Pesticides

15,7kg/km²

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

Protected areas1

IUCN Not Reported · 1🌊 Marine · 1

Padma Setu

IUCN Not Reported

Wildlife Sanctuary · 2020

116 km²

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