Ontologia

HydroBASINS lev08 watershed · #1081178800

Bassin de Tana River

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 4 administrative regions : Bura, Fafi, Galole, Ijara

Pfafstetter: 11720700

Sub-basin area

1 921,3km²

Upstream area

47 969,3km²

Discharge

170,49m³/s

Mean elev.

112m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

4 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Arawale

    IUCN VI

    National Reserve

    302.54 km² overlap

  • Hirimani

    IUCN Not Reported

    Forest Reserve

    11.04 km² overlap

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

Species present

510 distinct species · 975 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

975 obs · 29 cellules
Obs. / cellule
≥ 163
93–162
44–92
12–43
< 12

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 Tana River : 24 espèces reliées par 22 interactions GloBI sur 3 types (connectance 6.3%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
22
Connectance
0.063
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°

27,4°C

Annual rain

462mm

Moisture idx (CMI)

-0,76

Runoff

12mm/an

PET

1 912mm

AET

388mm

Mean slope

0,1°

Water table

29cm

Forest

5%

Crops

8%

Urban

0%

Protected

13%

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