Ontologia

HydroBASINS lev08 watershed · #1081154110

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 8 administrative regions : Manyatta, Masinga, Mbeere North, Mbeere South, Mwingi Central +3

5% lakePfafstetter: 11720957

Sub-basin area

2 592,7km²

Upstream area

13 348,7km²

Discharge

123,15m³/s

Mean elev.

997m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tana River351 km²

▲ Receives from 2 basins

8 dept-equivalent regions (GADM L2)

5 intersecting protected areas

  • Gaikuyu

    IUCN Not Reported

    Forest Reserve

    23.59 km² overlap

  • Mount Kenya

    IUCN Not Reported

    Forest Reserve

    4.37 km² overlap

  • Mt. Kenya

    IUCN II

    National Reserve

    4.32 km² overlap

  • Kianjiru Hills

    IUCN Not Reported

    Community Forest Reserve

    2.52 km² overlap

  • Maranga

    IUCN Not Reported

    Forest Reserve

    2.37 km² overlap

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

Species present

1 281 distinct species · 4 877 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 877 obs · 60 cellules
Obs. / cellule
≥ 939
219–938
54–218
24–53
< 24

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

Ecological tissue

Sample of 34 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 : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 36 interactions GloBI sur 5 types (connectance 6.4%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
36
Connectance
0.064
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°

21,8°C

Annual rain

855mm

Moisture idx (CMI)

-0,56

Runoff

207mm/an

PET

1 961mm

AET

717mm

Mean slope

4,6°

Water table

306cm

Forest

12%

Crops

7%

Urban

11%

Protected

0%

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