Tsau // Khaeb (Sperrgebiet)
IUCN Not ReportedNational Park · 2008
21 813 km²
Commune · ZAF
Richtersveld
South Africa
BWhArid, desert, hot(86 %)
Species observed
3 379
Observations
40 726
Area
9 625,1km²
Ecological tissue
Sample of 48 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 Richtersveld : 32 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 47 interactions GloBI sur 5 types (connectance 4.0%, filtre Serrano α=0.2). 17 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
49
Interactions affichées
47
Connectance
0.040
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
3 379 distinct species · 40 726 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
17,8°C
Annual rain
83mm
Warmest m°
28,9°C
Coldest m°
8,4°C
Elevation: 361 m on average (min -42 m, max 1 227 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
17,8°C
Annual rain
83mm
Warmest month
28,9°C
Coldest month
8,4°C
Mean alt.
361m
Min
-42m
Max
1 227m
Std. dev.
230m
Köppen-Geiger (dominant)
BWhArid, desert, hot(86 %)Arid
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
8,2
Org. C
12,3g/kg
Clay
9,8%
Sand
79,7%
Silt
10,5%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: mtGLiMaggregated to Namakwa
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
8,2
Org. C
14,4g/kg
Clay
8,8%
Sand
80,4%
Silt
10,8%
5–15 cm
pH H₂O
8,3
Org. C
8,7g/kg
Clay
9,5%
Sand
80,2%
Silt
10,3%
15–30 cm
pH H₂O
8,2
Org. C
13,8g/kg
Clay
11,1%
Sand
78,5%
Silt
10,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest0.4%
Crops0.1%
Built-up0.0%
Bare soil68.6%
Other (grassland, water…)31.0%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology23 basins · 0 lakes · 11 rivers
Hydrology metrics for this exact territory
Stream length here
583,2km
Basins crossed
23
Max stream order
9
Max drainage
884 883km²
Discharge in basins
1 054,5m³/s
Mean precip.
77mm/an
Mean T°
16,5°C
Moisture idx
-0,94
Mean runoff
8mm/an
Mean elev. (basins)
368m
Watersheds crossing here
- Basin #15760sub-area2 408,4 km²overlap1927.14 km²20%
- Bassin de Holgatsub-area1 647,3 km²overlap1644.90 km²17%
- Bassin de Orange River (Oranje)sub-area2 656,2 km²overlap1275.58 km²13%
- Bassin de Orange River (Oranje)sub-area1 058,7 km²overlap809.86 km²8%
- Bassin de Orange River (Oranje)sub-area973,8 km²overlap771.07 km²8%
- Basin #15770sub-area571,7 km²overlap557.12 km²6%
- Bassin de Annisriviersub-area554,8 km²overlap553.97 km²6%
- Bassin de Buffelssub-area823,9 km²overlap377.88 km²4%
- Basin #15830sub-area331,4 km²overlap322.45 km²3%
14 more basinssorted by overlap
- Basin #74230sub-area320,7 km²overlap320.28 km²3%
- Bassin de Orange River (Oranje)sub-area667,5 km²overlap284.64 km²3%
- Bassin de Swartdoodsub-area594 km²overlap222.89 km²2%
- Basin #15820sub-area129,2 km²overlap129.03 km²1%
- Bassin de Orange River (Oranje)sub-area198,1 km²overlap96.36 km²1%
- Basin #15750sub-area98 km²overlap94.00 km²1%
- Basin #15810sub-area92 km²overlap89.46 km²1%
- Basin #15740sub-area156,6 km²overlap86.52 km²1%
- Bassin de Nuabsub-area314,3 km²overlap59.62 km²1%
- Basin #15730sub-area163,5 km²overlap1.64 km²0%
- Bassin de Buffelssub-area642 km²overlap0.34 km²0%
- Bassin de Fish Riversub-area242,1 km²overlap0.09 km²0%
- Bassin de Gamchabsub-area929,5 km²overlap0.08 km²0%
- Basin #15860sub-area2 342 km²overlap0.04 km²0%
Rivers / streams (11, ord ≥ 4)
- Orange River (Oranje)ord 9len here355.63 km54%total656 km
- Holgatord 4len here116.51 km100%total117 km
- Annisrivierord 3len here84.30 km100%total84 km
- Kouamsord 3len here21.42 km100%total21 km
- Nuabord 9len here2.97 km6%total50 km
- Gamchabord 9len here1.61 km1%total279 km
- Fish Riverord 7len here0.50 km0%total1258 km
- Inaubord 2len here0.10 km0%total43 km
- Sambokord 3len here0.09 km0%total18 km
- Boomord 3len here0.07 km0%total108 km
- Karinauibord 2len here0.06 km1%total11 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,0nW
Built-up
1,6%
Pesticides
0,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas7
IUCN Not Reported · 6IUCN II · 1🌊 Marine · 3
Ai-Ais Hot Springs
IUCN IINational Park · 2002
4 354 km²
Richtersveld National Park
IUCN Not ReportedNational Park · 1991
1 703 km²
Nababiep Nature Reserve
IUCN Not ReportedNature Reserve · 1992
109 km²
Orange River Mouth Nature Reserve
IUCN Not ReportedNature Reserve · 2018
38 km²
Orange River Mouth Wetland
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 1991
23 km²
Complete list7 protected areas
- Tsau // Khaeb (Sperrgebiet)National ParkIUCN Not Reported200821 813 km²
- Ai-Ais Hot SpringsNational ParkIUCN II20024 354 km²
- Richtersveld National ParkNational ParkIUCN Not Reported19911 703 km²
- Nababiep Nature ReserveNature ReserveIUCN Not Reported1992109 km²
- Orange River Mouth Nature ReserveNature ReserveIUCN Not Reported201838 km²
- Orange River Mouth WetlandWetland of International Importance (Ramsar Site)IUCN Not Reported199123 km²
- Orange River MouthWetland of International Importance (Ramsar Site)IUCN Not Reported199523 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN