Ontologia

HydroBASINS lev08 watershed · #1081657200

Bassin de Gamka 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 2 administrative regions : Central Karoo, Eden

2% lakePfafstetter: 12580430

Sub-basin area

914,4km²

Upstream area

12 455,2km²

Discharge

6,61m³/s

Mean elev.

731m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Gamka River1385 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

1 594 distinct species · 16 818 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

16 818 obs · 24 cellules
Obs. / cellule
≥ 6 932
1 839–6 931
405–1 838
335–404
< 335

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

Ecological tissue

Sample of 25 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 Gamka River : 16 espèces reliées par 28 interactions GloBI sur 3 types (connectance 9.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
25
Interactions affichées
28
Connectance
0.093
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°

15,3°C

Annual rain

235mm

Moisture idx (CMI)

-0,83

Runoff

16mm/an

PET

1 443mm

AET

201mm

Mean slope

8,6°

Water table

954cm

Forest

0%

Crops

3%

Urban

0%

Protected

4%

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