Ontologia

HydroBASINS lev08 watershed · #1081187660

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 3 administrative regions : Galole, Garsen, Ijara

Pfafstetter: 11720505

Sub-basin area

323,6km²

Upstream area

62 656km²

Discharge

212,78m³/s

Mean elev.

47m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tana River6 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

676 distinct species · 2 778 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 778 obs · 7 cellules
Obs. / cellule
≥ 1 933
1 933–1 932
25–1 932
21–24
< 21

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

Ecological tissue

Sample of 12 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 : 11 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 8 interactions GloBI sur 3 types (connectance 12.1%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
12
Interactions affichées
8
Connectance
0.121
Patrimoniales
2
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°

27,2°C

Annual rain

595mm

Moisture idx (CMI)

-0,66

Runoff

36mm/an

PET

1 750mm

AET

501mm

Mean slope

0,1°

Water table

21cm

Forest

14%

Crops

10%

Urban

0%

Protected

17%

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