Ontologia

Subdivision · BGD

Surma

Bangladesh

CwaTemperate, dry winter, hot summer(68 %)

Species observed

85

Observations

271

Area

30km²

Ecological tissue

Sample of 27 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 Surma : 22 espèces reliées par 36 interactions GloBI sur 4 types (connectance 10.3%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
36
Connectance
0.103
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

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

Species present

85 distinct species · 271 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

271 obs · 1 cellules
Obs. / cellule
≥ 271
271–270
271–270
271–270
< 271

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

6 554mm

Warmest m°

30,2°C

Coldest m°

12,0°C

Elevation: 8 m on average (min 4 m, max 11 m)

Bioclimatic detailsExpert
Annual mean temp.
24,3°C
Annual rain
6 554mm
Warmest month
30,2°C
Coldest month
12,0°C
Mean alt.
8m
Min
4m
Max
11m
Std. dev.
1m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, hot summer(68 %)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

20,5g/kg

Clay

29,0%

Sand

43,6%

Silt

27,4%

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

Dominant lithology: wbGLiMaggregated to Sunamganj

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,4
Org. C
27,4g/kg
Clay
27,9%
Sand
44,4%
Silt
27,7%
5–15 cm
pH H₂O
5,3
Org. C
19,9g/kg
Clay
29,2%
Sand
43,3%
Silt
27,4%
15–30 cm
pH H₂O
5,4
Org. C
14,3g/kg
Clay
29,9%
Sand
43,1%
Silt
27,0%

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

Land cover

Forest19.1%
Crops49.5%
Built-up0.9%
Bare soil0.9%
Other (grassland, water…)29.6%

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

Hydrology3 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

10,0km

Basins crossed

3

Max stream order

6

Max drainage

7 526km²

Discharge in basins

98,0m³/s

Mean precip.

3 811mm/an

Mean T°

24,0°C

Moisture idx

0,62

Mean runoff

5 117mm/an

Mean elev. (basins)

171m

Watersheds crossing here

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

Human pressure

Pop. density

7hab/km²

Night light

0,2nW

Built-up

93,7%

Pesticides

10,9kg/km²

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