Ontologia

County · IRN

Hamadan

Iran

BSkArid, steppe, cold(49 %)

Species observed

450

Observations

3 110

Area

3 311,1km²

Ecological tissue

Sample of 38 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 Hamadan : 20 espèces reliées par 83 interactions GloBI sur 6 types (connectance 11.2%, filtre Serrano α=0.2). 19 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
83
Connectance
0.112
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

450 distinct species · 3 110 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 110 obs · 40 cellules
Obs. / cellule
≥ 546
339–545
65–338
24–64
< 24

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

Climate

Mean T°

11,7°C

Annual rain

381mm

Warmest m°

32,9°C

Coldest m°

-9,6°C

Elevation: 1 910 m on average (min 1 595 m, max 3 335 m)

Bioclimatic detailsExpert
Annual mean temp.
11,7°C
Annual rain
381mm
Warmest month
32,9°C
Coldest month
-9,6°C
Mean alt.
1 910m
Min
1 595m
Max
3 335m
Std. dev.
318m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(49 %)Arid

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

Soil & lithology

pH H₂O

7,7

Org. C

6,8g/kg

Clay

26,7%

Sand

35,6%

Silt

37,7%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,6
Org. C
11,9g/kg
Clay
25,9%
Sand
36,1%
Silt
38,0%
5–15 cm
pH H₂O
7,7
Org. C
3,2g/kg
Clay
26,7%
Sand
35,5%
Silt
37,9%
15–30 cm
pH H₂O
7,7
Org. C
5,3g/kg
Clay
27,7%
Sand
35,2%
Silt
37,1%

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

Land cover

Forest0.6%
Crops40.6%
Built-up0.5%
Bare soil22.3%
Other (grassland, water…)36.0%

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

Hydrology19 basins · 0 lakes · 5 rivers

Hydrology metrics for this exact territory

Stream length here

198,9km

Basins crossed

19

Max stream order

5

Max drainage

15 678km²

Discharge in basins

131,3m³/s

Mean precip.

335mm/an

Mean T°

11,0°C

Moisture idx

-0,74

Max snow

14%

Mean runoff

138mm/an

Mean elev. (basins)

1 879m

Watersheds crossing here

10 more basins

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

Human pressure

Pop. density

1hab/km²

Night light

1,6nW

Built-up

53,2%

Pesticides

2,2kg/km²

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