Ontologia

HydroBASINS lev08 watershed · #1081284730

Bassin de Issaua

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 : Chunya, Manyoni

Pfafstetter: 11746044

Sub-basin area

5 249,1km²

Upstream area

5 249,9km²

Discharge

6,64m³/s

Mean elev.

1 277m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Myombe466 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

89 distinct species · 124 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

124 obs · 32 cellules
Obs. / cellule
≥ 28
7–27
3–6
1–2
< 1

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

Ecological tissue

Sample of 19 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 Issaua : 17 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 18 interactions GloBI sur 2 types (connectance 10.5%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
19
Interactions affichées
18
Connectance
0.105
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°

21,7°C

Annual rain

646mm

Moisture idx (CMI)

-0,62

Runoff

49mm/an

PET

1 694mm

AET

545mm

Mean slope

2,3°

Water table

419cm

Forest

1%

Crops

0%

Urban

0%

Protected

100%

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