Ontologia

HydroBASINS lev08 watershed · #1080968040

Bassin de Anambra

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 5 administrative regions : Anambra East, Anambra West, Ayamelum, Ibaji, Uzo-Uwani

3% lakePfafstetter: 14210023

Sub-basin area

1 648,4km²

Upstream area

9 688,5km²

Discharge

242,85m³/s

Mean elev.

31m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Anambra331 km²

▲ Receives from 2 basins

5 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Anambra

    IUCN Not Reported

    Forest Reserve

    150.91 km² overlap

  • Oroma Anam

    IUCN Not Reported

    Forest Reserve

    1.77 km² overlap

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

Species present

163 distinct species · 592 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

592 obs · 15 cellules
Obs. / cellule
≥ 141
109–140
59–108
9–58
< 9

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

Ecological tissue

Sample of 23 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 Anambra : 19 espèces reliées par 19 interactions GloBI sur 2 types (connectance 7.5%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
19
Connectance
0.075
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

1 547mm

Moisture idx (CMI)

-0,07

Runoff

1 010mm/an

PET

1 672mm

AET

1 101mm

Mean slope

0,3°

Water table

12cm

Forest

56%

Crops

78%

Urban

2%

Protected

9%

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