Ontologia

HydroBASINS lev08 watershed · #1080014130

Bassin de Keiskammarivier

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 : Amathole, Buffalo City

2% lakePfafstetter: 12555008

Sub-basin area

2 707,3km²

Upstream area

2 707,5km²

Discharge

11,53m³/s

Mean elev.

548m

Administrative coverage

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

3 196 distinct species · 76 823 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

76 823 obs · 72 cellules
Obs. / cellule
≥ 22 140
2 015–22 139
270–2 014
113–269
< 113

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 Keiskammarivier : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 19 interactions GloBI sur 4 types (connectance 6.3%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
25
Interactions affichées
19
Connectance
0.063
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°

17,3°C

Annual rain

670mm

Moisture idx (CMI)

-0,49

Runoff

132mm/an

PET

1 337mm

AET

568mm

Mean slope

7,3°

Water table

520cm

Forest

70%

Crops

15%

Urban

1%

Protected

3%

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