Ontologia

HydroBASINS lev08 watershed · #1080854870

Bassin de Arba

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 2 administrative regions : Afar Zone 3, Mirab Hararghe

EndorheicPfafstetter: 11571920

Sub-basin area

1 665,8km²

Upstream area

1 665,8km²

Discharge

1,25m³/s

Mean elev.

1 506m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Awash63 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

232 distinct species · 585 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

585 obs · 32 cellules
Obs. / cellule
≥ 225
24–224
8–23
4–7
< 4

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

Ecological tissue

Sample of 38 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 Arba : 32 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 3 types (connectance 5.7%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
40
Connectance
0.057
Patrimoniales
3
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°

22,1°C

Annual rain

919mm

Moisture idx (CMI)

-0,49

Runoff

22mm/an

PET

1 853mm

AET

777mm

Mean slope

7,1°

Water table

521cm

Forest

0%

Crops

20%

Urban

1%

Protected

43%

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