Ontologia

Distict · BGD

Sylhet

Bangladesh

CwaTemperate, dry winter, hot summer(96 %)

Species observed

798

Observations

3 961

Area

3 410,7km²

Ecological tissue

Sample of 42 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 Sylhet : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 53 interactions GloBI sur 4 types (connectance 6.2%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
53
Connectance
0.062
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

798 distinct species · 3 961 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 961 obs · 64 cellules
Obs. / cellule
≥ 766
173–765
29–172
15–28
< 15

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

Climate

Mean T°

24,3°C

Annual rain

5 046mm

Warmest m°

30,6°C

Coldest m°

11,9°C

Elevation: 11 m on average (min 5 m, max 214 m)

Bioclimatic detailsExpert
Annual mean temp.
24,3°C
Annual rain
5 046mm
Warmest month
30,6°C
Coldest month
11,9°C
Mean alt.
11m
Min
5m
Max
214m
Std. dev.
7m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, hot summer(96 %)Temperate

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

Soil & lithology

pH H₂O

5,4

Org. C

20,9g/kg

Clay

27,0%

Sand

48,2%

Silt

24,8%

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

Dominant lithology: wbGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,4
Org. C
26,4g/kg
Clay
26,3%
Sand
48,8%
Silt
24,9%
5–15 cm
pH H₂O
5,4
Org. C
20,6g/kg
Clay
26,3%
Sand
48,7%
Silt
25,0%
15–30 cm
pH H₂O
5,4
Org. C
15,7g/kg
Clay
28,6%
Sand
47,0%
Silt
24,4%

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

Land cover

Forest19.9%
Crops47.5%
Built-up1.3%
Bare soil1.4%
Other (grassland, water…)29.9%

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

Hydrology14 basins · 50 lakes · 19 rivers

Hydrology metrics for this exact territory

Stream length here

615,2km

Lake surface here

19,84km²

Basins crossed

14

Max stream order

6

Max drainage

35 845km²

Discharge in basins

4 129,4m³/s

Mean precip.

3 725mm/an

Mean T°

23,4°C

Moisture idx

0,62

Max snow

1%

Mean runoff

3 458mm/an

Mean elev. (basins)

284m

Watersheds crossing here

5 more basins

Lakes (50, top by area)

41 more lakes

Rivers / streams (19, ord ≥ 4)

7 more river segments

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

Human pressure

Pop. density

10hab/km²

Night light

0,5nW

Built-up

131,5%

Pesticides

13,7kg/km²

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

Protected areas3

IUCN Not Reported · 2IUCN IV · 1

Ratargul

IUCN Not Reported

Special Biodiversity Conservation Area · 2015

2 km²

Tilagar

IUCN Not Reported

Eco Park · 2019

0 km²

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

Sub-administrations64