Ontologia

Chef-Lieu-Wilaya · DZA

Tlemcen

Algeria

CsaTemperate, dry summer, hot summer(78 %)

Species observed

189

Observations

287

Area

41,6km²

Ecological tissue

Sample of 35 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 Tlemcen : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 5 types (connectance 12.3%, filtre Serrano α=0.2). 20 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
41
Interactions affichées
101
Connectance
0.123
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

189 distinct species · 287 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

287 obs · 1 cellules
Obs. / cellule
≥ 287
287–286
287–286
287–286
< 287

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

Climate

Mean T°

16,0°C

Annual rain

402mm

Warmest m°

31,9°C

Coldest m°

2,6°C

Elevation: 745 m on average (min 449 m, max 1 137 m)

Bioclimatic detailsExpert
Annual mean temp.
16,0°C
Annual rain
402mm
Warmest month
31,9°C
Coldest month
2,6°C
Mean alt.
745m
Min
449m
Max
1 137m
Std. dev.
144m
Köppen-Geiger (dominant)
CsaTemperate, dry summer, hot summer(78 %)Temperate

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

16,3g/kg

Clay

27,3%

Sand

41,1%

Silt

31,7%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,8
Org. C
24,5g/kg
Clay
26,3%
Sand
41,3%
Silt
32,3%
5–15 cm
pH H₂O
7,9
Org. C
13,2g/kg
Clay
27,3%
Sand
41,2%
Silt
31,5%
15–30 cm
pH H₂O
8,0
Org. C
11,1g/kg
Clay
28,1%
Sand
40,7%
Silt
31,2%

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

Land cover

Forest8.0%
Crops12.2%
Built-up9.8%
Bare soil1.9%
Other (grassland, water…)68.1%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

1,0km

Basins crossed

2

Max stream order

1

Max drainage

4 957km²

Discharge in basins

0,1m³/s

Mean precip.

491mm/an

Mean T°

15,8°C

Moisture idx

-0,59

Mean runoff

26mm/an

Mean elev. (basins)

679m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

28hab/km²

Night light

23,8nW

Built-up

978,6%

Pesticides

18,6kg/km²

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

Protected areas2

IUCN Not Applicable · 1IUCN II · 1

Tlemcen

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 2016

1 064 km²

Tlemcen

IUCN II

National Park · 1993

82 km²

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