Ontologia

HydroBASINS lev08 watershed · #1080174330

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 1 administrative regions : Tata

Pfafstetter: 15140401

Sub-basin area

124,8km²

Upstream area

8 076,3km²

Discharge

20,39m³/s

Mean elev.

469m

Administrative coverage

Hydrographic chain

1 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Oued Draa

    IUCN Not Applicable

    Permanent Hunting Reserve

    124.69 km² overlap

  • Oasis de Tissint

    IUCN Not Applicable

    Biological and Ecological Interest Site

    75.96 km² overlap

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

Species present

92 distinct species · 386 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

386 obs · 3 cellules
Obs. / cellule
≥ 372
372–371
372–371
7–371
< 7

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

Ecological tissue

Sample of 29 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 34 interactions GloBI sur 2 types (connectance 8.4%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
34
Connectance
0.084
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°

22,9°C

Annual rain

99mm

Moisture idx (CMI)

-0,95

Runoff

45mm/an

PET

1 881mm

AET

81mm

Mean slope

1,7°

Water table

273cm

Forest

0%

Crops

0%

Urban

0%

Protected

100%

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