Ontologia

HydroBASINS lev08 watershed · #1080056440

Bassin de Oued el Mellah

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 11 administrative regions : Ain Lahdjar, Bazer-Sakra, Bellaa, Bir Haddada, Bir-El-Arch +6

Endorheic 20% lakePfafstetter: 15305050

Sub-basin area

527,4km²

Upstream area

527,4km²

Discharge

1,65m³/s

Mean elev.

991m

Administrative coverage

11 dept-equivalent regions (GADM L2)

3 more

1 intersecting protected areas

  • Sebkha de Bazer

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    43.44 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

100 distinct species · 512 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

512 obs · 11 cellules
Obs. / cellule
≥ 267
117–266
21–116
9–20
< 9

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

Ecological tissue

Sample of 27 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 Bassin de Oued el Mellah : 24 espèces reliées par 27 interactions GloBI sur 3 types (connectance 7.7%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
27
Connectance
0.077
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

13,3°C

Annual rain

467mm

Moisture idx (CMI)

-0,60

Runoff

101mm/an

PET

1 174mm

AET

398mm

Mean slope

1,9°

Water table

202cm

Forest

0%

Crops

22%

Urban

19%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)