Ontologia

HydroLAKES lake · #1657

Vaaldam

ReservoirSouth AfricaAfrica 1486 m

Surface area

287,81km²

Avg depth

11,1m

Volume

3 199km³

Shoreline

555,7km

Administrative coverage

Parent watershed

hybas-10816088602542 km² · upstream 17978 km²

3 dept-equivalent regions (GADM L2)

  • Fezile Dabi
    Free State · South Africa
    227.20 km²
    79.1% of lake
  • Sedibeng
    Gauteng · South Africa
    31.33 km²
    10.9% of lake
  • Gert Sibande
    Mpumalanga · South Africa
    28.79 km²
    10.0% of lake

1 intersecting protected areas

Computed live · HydroLAKES × GADM × WDPA · cached after first hit.

Species present

327 distinct species · 5 381 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 381 obs · 6 cellules
Obs. / cellule
≥ 1 317
1 317–1 316
1 278–1 316
1 258–1 277
< 1 258

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

Ecological tissue

Sample of 26 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 Vaaldam : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 21 interactions GloBI sur 3 types (connectance 6.0%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
21
Connectance
0.060
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Lake statistics (HydroLAKES)

Surface

287,81km²

Avg depth

11,1m

Volume

3 199,000km³

Watershed

38 545km²

Shoreline

555,7km

Shore dev. idx

9,24

Residence time

579days

Elevation

1 486m

HydroLAKES v1.0 (Messager et al. 2016) · 1.4M lacs ≥ 0.1 km² mondialement.