Ontologia

County · IRN

Marivan

Iran

DsaCold, dry summer, hot summer(66 %)

Species observed

727

Observations

12 425

Area

3 718,7km²

Ecological tissue

Sample of 33 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 Marivan : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 64 interactions GloBI sur 3 types (connectance 12.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
64
Connectance
0.121
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

727 distinct species · 12 425 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

12 425 obs · 77 cellules
Obs. / cellule
≥ 2 204
496–2 203
48–495
18–47
< 18

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

Climate

Mean T°

11,5°C

Annual rain

920mm

Warmest m°

32,7°C

Coldest m°

-8,9°C

Elevation: 1 731 m on average (min 948 m, max 2 929 m)

Bioclimatic detailsExpert
Annual mean temp.
11,5°C
Annual rain
920mm
Warmest month
32,7°C
Coldest month
-8,9°C
Mean alt.
1 731m
Min
948m
Max
2 929m
Std. dev.
306m
Köppen-Geiger (dominant)
DsaCold, dry summer, hot summer(66 %)Cold

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

Soil & lithology

pH H₂O

7,5

Org. C

13,6g/kg

Clay

34,4%

Sand

23,5%

Silt

42,1%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,4
Org. C
24,3g/kg
Clay
34,1%
Sand
23,6%
Silt
42,3%
5–15 cm
pH H₂O
7,5
Org. C
7,5g/kg
Clay
34,7%
Sand
23,4%
Silt
41,9%
15–30 cm
pH H₂O
7,5
Org. C
8,9g/kg
Clay
34,4%
Sand
23,5%
Silt
42,1%

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

Land cover

Forest9.2%
Crops10.5%
Built-up0.1%
Bare soil5.6%
Other (grassland, water…)74.6%

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

Hydrology19 basins · 3 lakes · 12 rivers

Hydrology metrics for this exact territory

Stream length here

292,9km

Lake surface here

9,53km²

Basins crossed

19

Max stream order

6

Max drainage

10 012km²

Discharge in basins

195,7m³/s

Mean precip.

679mm/an

Mean T°

11,6°C

Moisture idx

-0,47

Max snow

22%

Mean runoff

385mm/an

Mean elev. (basins)

1 728m

Watersheds crossing here

10 more basins

Lakes (3, top by area)

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

Human pressure

Pop. density

0hab/km²

Night light

0,6nW

Built-up

11,1%

Pesticides

4,8kg/km²

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

Protected areas1

IUCN IV · 1

Zarivar

IUCN IV

Wetland of International Importance (Ramsar Site) · 2016

21 km²

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