Atlas Saharien
IUCN Not ApplicableCultural Park · 2008
88 692 km²
Commune · DZA
Tolga
Algeria
BWhArid, desert, hot(99 %)
Species observed
21
Observations
32
Area
1 213,9km²
Ecological tissue
Sample of 8 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 Tolga : 8 espèces reliées par 6 interactions GloBI sur 3 types (connectance 21.4%, filtre Serrano α=0.2).
Espèces affichées
8
Interactions affichées
6
Connectance
0.214
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
21 distinct species · 32 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
20,8°C
Annual rain
178mm
Warmest m°
37,9°C
Coldest m°
4,5°C
Elevation: 338 m on average (min 109 m, max 926 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
20,8°C
Annual rain
178mm
Warmest month
37,9°C
Coldest month
4,5°C
Mean alt.
338m
Min
109m
Max
926m
Std. dev.
153m
Köppen-Geiger (dominant)
BWhArid, desert, hot(99 %)Arid
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
8,1
Org. C
8,7g/kg
Clay
18,5%
Sand
46,9%
Silt
34,6%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
8,1
Org. C
10,7g/kg
Clay
17,5%
Sand
47,6%
Silt
35,0%
5–15 cm
pH H₂O
8,1
Org. C
7,5g/kg
Clay
18,3%
Sand
46,9%
Silt
34,9%
15–30 cm
pH H₂O
8,2
Org. C
7,8g/kg
Clay
19,8%
Sand
46,2%
Silt
34,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest1.2%
Crops3.7%
Built-up0.2%
Bare soil77.6%
Other (grassland, water…)17.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology4 basins · 0 lakes · 0 rivers
Hydrology metrics for this exact territory
Basins crossed
4
Max drainage
26 918km²
Discharge in basins
2,7m³/s
Mean precip.
172mm/an
Mean T°
19,3°C
Moisture idx
-0,88
Mean runoff
34mm/an
Mean elev. (basins)
360m
Watersheds crossing here
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,5nW
Built-up
18,7%
Pesticides
7,5kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN Not Applicable · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN