Ontologia

Subdivision · BGD

Sajek

Bangladesh

CwaTemperate, dry winter, hot summer(51 %)

Species observed

141

Observations

503

Area

1 224,1km²

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 Sajek : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 4 types (connectance 7.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
42
Connectance
0.071
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

141 distinct species · 503 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

503 obs · 8 cellules
Obs. / cellule
≥ 347
347–346
31–346
18–30
< 18

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

Climate

Mean T°

24,0°C

Annual rain

2 551mm

Warmest m°

31,8°C

Coldest m°

11,1°C

Elevation: 155 m on average (min 37 m, max 571 m)

Bioclimatic detailsExpert
Annual mean temp.
24,0°C
Annual rain
2 551mm
Warmest month
31,8°C
Coldest month
11,1°C
Mean alt.
155m
Min
37m
Max
571m
Std. dev.
81m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, hot summer(51 %)Temperate

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

Soil & lithology

pH H₂O

5,3

Org. C

19,0g/kg

Clay

29,4%

Sand

32,6%

Silt

38,0%

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

Dominant lithology: ssGLiMaggregated to Rangamati

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,4
Org. C
25,4g/kg
Clay
27,5%
Sand
33,7%
Silt
38,7%
5–15 cm
pH H₂O
5,3
Org. C
20,1g/kg
Clay
29,2%
Sand
32,5%
Silt
38,3%
15–30 cm
pH H₂O
5,3
Org. C
11,6g/kg
Clay
31,5%
Sand
31,4%
Silt
37,1%

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

Land cover

Forest87.0%
Crops0.7%
Built-up0.1%
Bare soil0.0%
Other (grassland, water…)12.2%

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

Hydrology9 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

52,0km

Basins crossed

9

Max stream order

5

Max drainage

5 287km²

Discharge in basins

90,2m³/s

Mean precip.

2 416mm/an

Mean T°

24,7°C

Moisture idx

0,40

Mean runoff

1 785mm/an

Mean elev. (basins)

192m

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

6,9%

Pesticides

15,1kg/km²

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

Protected areas1

IUCN II · 1

Pablakhali

IUCN II

Wildlife Sanctuary · 1983

435 km²

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