Ontologia

County · IRN

Karaj

Iran

BSkArid, steppe, cold(51 %)

Species observed

1 161

Observations

12 555

Area

1 950,2km²

Ecological tissue

Sample of 23 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 Karaj : 16 espèces reliées par 57 interactions GloBI sur 3 types (connectance 22.5%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
57
Connectance
0.225
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

1 161 distinct species · 12 555 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

12 555 obs · 53 cellules
Obs. / cellule
≥ 2 903
453–2 902
101–452
39–100
< 39

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

Climate

Mean T°

10,4°C

Annual rain

594mm

Warmest m°

30,2°C

Coldest m°

-9,1°C

Elevation: 1 897 m on average (min 1 132 m, max 3 821 m)

Bioclimatic detailsExpert
Annual mean temp.
10,4°C
Annual rain
594mm
Warmest month
30,2°C
Coldest month
-9,1°C
Mean alt.
1 897m
Min
1 132m
Max
3 821m
Std. dev.
742m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(51 %)Arid

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

Soil & lithology

pH H₂O

7,6

Org. C

14,1g/kg

Clay

26,3%

Sand

33,4%

Silt

40,2%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,6
Org. C
21,7g/kg
Clay
25,5%
Sand
34,1%
Silt
40,4%
5–15 cm
pH H₂O
7,7
Org. C
9,9g/kg
Clay
26,4%
Sand
33,5%
Silt
40,2%
15–30 cm
pH H₂O
7,7
Org. C
10,6g/kg
Clay
27,1%
Sand
32,8%
Silt
40,1%

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

Land cover

Forest0.7%
Crops10.6%
Built-up1.9%
Bare soil40.0%
Other (grassland, water…)46.8%

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

Hydrology13 basins · 1 lakes · 13 rivers

Hydrology metrics for this exact territory

Stream length here

187,7km

Lake surface here

3,50km²

Basins crossed

13

Max stream order

3

Max drainage

17 263km²

Discharge in basins

42,0m³/s

Mean precip.

239mm/an

Mean T°

11,4°C

Moisture idx

-0,81

Max snow

28%

Mean runoff

208mm/an

Mean elev. (basins)

1 922m

Watersheds crossing here

4 more basins

Lakes (1, top by area)

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

Human pressure

Pop. density

6hab/km²

Night light

5,7nW

Built-up

188,0%

Pesticides

2,2kg/km²

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