Arjan or Ajan and Parishan
IUCN VProtected Area · 1982
656 km²
County · IRN
Mamasany
Iran
BShArid, steppe, hot(57 %)
Species observed
492
Observations
2 648
Area
7 840,2km²
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 Mamasany : 24 espèces reliées par 39 interactions GloBI sur 5 types (connectance 7.0%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
34
Interactions affichées
39
Connectance
0.070
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
492 distinct species · 2 648 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
17,8°C
Annual rain
898mm
Warmest m°
37,1°C
Coldest m°
-1,3°C
Elevation: 1 340 m on average (min 273 m, max 2 797 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
17,8°C
Annual rain
898mm
Warmest month
37,1°C
Coldest month
-1,3°C
Mean alt.
1 340m
Min
273m
Max
2 797m
Std. dev.
614m
Köppen-Geiger (dominant)
BShArid, steppe, hot(57 %)Arid
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
7,9
Org. C
6,4g/kg
Clay
28,5%
Sand
25,9%
Silt
45,6%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: smGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
7,8
Org. C
9,9g/kg
Clay
27,1%
Sand
27,2%
Silt
45,6%
5–15 cm
pH H₂O
7,9
Org. C
3,4g/kg
Clay
28,2%
Sand
26,1%
Silt
45,7%
15–30 cm
pH H₂O
7,9
Org. C
5,9g/kg
Clay
30,2%
Sand
24,2%
Silt
45,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest3.4%
Crops12.9%
Built-up0.1%
Bare soil19.4%
Other (grassland, water…)64.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology19 basins · 3 lakes · 15 rivers
Hydrology metrics for this exact territory
Stream length here
721,4km
Lake surface here
0,58km²
Basins crossed
19
Max stream order
5
Max drainage
7 683km²
Discharge in basins
202,8m³/s
Mean precip.
280mm/an
Mean T°
18,5°C
Moisture idx
-0,82
Max snow
12%
Mean runoff
252mm/an
Mean elev. (basins)
1 280m
Watersheds crossing here
- Bassin de رود تیرمردانsub-area2 236,6 km²overlap1430.55 km²18%
- Bassin de رودخانه زهرهsub-area2 404,7 km²overlap1186.21 km²15%
- Bassin de رود تنگ شیوsub-area1 264 km²overlap901.84 km²12%
- Basin #73070sub-area1 445,7 km²overlap765.25 km²10%
- Bassin de رود کتیsub-area693,6 km²overlap690.10 km²9%
- Bassin de رودخانه شاپورsub-area2 164,2 km²overlap549.75 km²7%
- Basin #33910sub-area519,7 km²overlap498.93 km²6%
- Bassin de رود فهلیانsub-area486,2 km²overlap485.64 km²6%
- Bassin de شکستیانsub-area617,4 km²overlap409.48 km²5%
10 more basinssorted by overlap
- Bassin de قره آغاجsub-area458,5 km²overlap237.66 km²3%
- Bassin de رودخانه دره گپsub-area862,3 km²overlap173.75 km²2%
- Basin #73150sub-area1 047,4 km²overlap128.36 km²2%
- Basin #24470sub-area1 039,1 km²overlap104.99 km²1%
- Bassin de رود فهلیانsub-area78,6 km²overlap78.53 km²1%
- Bassin de رود بشارsub-area862,5 km²overlap67.18 km²1%
- Bassin de رود بشارsub-area905,4 km²overlap63.77 km²1%
- Bassin de قره آغاجsub-area216,6 km²overlap30.64 km²0%
- Bassin de رودخانه شاپورsub-area1 127,1 km²overlap22.15 km²0%
- Basin #73160sub-area1 641,8 km²overlap15.45 km²0%
Lakes (3, top by area)
Rivers / streams (15, ord ≥ 4)
- رودخانه زهرهord 6len here168.23 km29%total584 km
- رود تنگ شیوord 5len here119.72 km94%total128 km
- رود تیرمردانord 4len here96.07 km100%total96 km
- رود کتیord 3len here82.01 km100%total82 km
- رود فهلیانord 4len here75.98 km100%total76 km
- قره آغاجord 5len here44.68 km5%total969 km
- رودخانه شش پیرord 4len here43.91 km62%total71 km
- رودخانه شاهپورord 2len here25.86 km100%total26 km
- رودخانه شیرord 3len here21.30 km65%total33 km
- رودخانه كر سياهord 2len here11.50 km100%total11 km
- غار ده گردوord 1len here11.23 km100%total11 km
- شکستیانord 4len here10.06 km26%total39 km
3 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
3,2nW
Built-up
11,0%
Pesticides
3,7kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas2
IUCN V · 1IUCN Not Applicable · 1
Arjan
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve · 1976
654 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN