Ontologia

HydroBASINS lev08 watershed · #1080206080

Bassin de Oued Drâa ⴰⵙⵉⴼ ⵏ ⴷⵔⵄⴰ وادي درعة

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 3 administrative regions : Assa-Zag, Guelmim, Tan-Tan

Pfafstetter: 15140105

Sub-basin area

2 361,8km²

Upstream area

90 052,9km²

Discharge

232,28m³/s

Mean elev.

333m

Administrative coverage

Hydrographic chain

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Msied - Abteh

    IUCN Not Applicable

    Permanent Hunting Reserve

    193.08 km² overlap

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

Species present

198 distinct species · 1 164 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 164 obs · 48 cellules
Obs. / cellule
≥ 302
42–301
16–41
8–15
< 8

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 Drâa ⴰⵙⵉⴼ ⵏ ⴷⵔⵄⴰ وادي درعة : 22 espèces reliées par 31 interactions GloBI sur 2 types (connectance 7.6%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
31
Connectance
0.076
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°

20,3°C

Annual rain

83mm

Moisture idx (CMI)

-0,94

Runoff

42mm/an

PET

1 467mm

AET

70mm

Mean slope

5,6°

Water table

693cm

Forest

0%

Crops

0%

Urban

0%

Protected

86%

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