Ontologia

HydroBASINS lev08 watershed · #1081655840

Bassin de Great Fish 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 1 administrative regions : Cacadu

Pfafstetter: 12556300

Sub-basin area

1 474,3km²

Upstream area

23 538,2km²

Discharge

11,33m³/s

Mean elev.

510m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Great Fish River84 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

2 348 distinct species · 72 434 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

72 434 obs · 38 cellules
Obs. / cellule
≥ 46 743
2 072–46 742
762–2 071
443–761
< 443

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

Ecological tissue

Sample of 33 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 Great Fish River : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 23 interactions GloBI sur 4 types (connectance 4.4%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
23
Connectance
0.044
Patrimoniales
1
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°

17,6°C

Annual rain

533mm

Moisture idx (CMI)

-0,63

Runoff

56mm/an

PET

1 428mm

AET

453mm

Mean slope

5,1°

Water table

637cm

Forest

37%

Crops

7%

Urban

0%

Protected

2%

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